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@@ -0,0 +1,1434 @@
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+// Opt-in browser benchmark for high-cardinality workspace and history
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+// rendering. It reports measurements without timing assertions because host
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+// speed is not a correctness contract; structural assertions keep the load
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+// shape from silently shrinking.
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+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
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+import { tmpdir } from 'node:os'
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+import { join } from 'node:path'
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+import { performance } from 'node:perf_hooks'
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+import type { Browser, CDPSession, Locator, Page } from 'playwright'
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+import { chromium } from 'playwright'
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+import { afterAll, beforeAll, describe, expect, it } from 'vitest'
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+import type { StreamChunk } from '@deepseek-ai/dsh-llm'
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+import {
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+ CallId,
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+ createAssistantMessage,
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+ createToolResultMessage,
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+ createUserMessage,
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+} from '@deepseek-ai/dsh-llm'
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+import type { ReplayEntry, ReplayOverrideDoc } from '@deepseek-ai/dsh-llm-replay'
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+import type { SessionEvent } from '@deepseek-ai/dsh-session'
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+import {
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+ SESSION_FORMAT_VERSION,
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+ Session,
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+ SessionId,
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+} from '@deepseek-ai/dsh-session'
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+// Carries the session/title event declaration into the fixture builder.
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+import type {} from '@deepseek-ai/dsh-session-title'
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+import {
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+ launchWebScaffold,
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+ seedSession,
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+ watchConsole,
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+ webSnapshotMode,
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+ type WebScaffold,
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+} from './scaffold.ts'
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+import { connectFreshWorkspace, newEnglishPage } from './support.ts'
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+
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+const SIDEBAR_SESSION_COUNT = 1_000
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+const LONG_SESSION_ID = 'perf-long-history'
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+const LONG_SESSION_TITLE = 'LONG_PERF_SENTINEL 500-turn session'
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+const LONG_HISTORY_TURNS = 500
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+const TOOL_TURN_INTERVAL = 10
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+const TOOLS_PER_TOOL_TURN = 10
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+const EXPECTED_TOOL_CALLS = LONG_HISTORY_TURNS / TOOL_TURN_INTERVAL * TOOLS_PER_TOOL_TURN
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+const EXPECTED_TRAJECTORY_ROWS = 2_100
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+const DEFAULT_HISTORY_TURNS = 24
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+const PERF_REPLAY_CONTEXT_WINDOW = 10_000_000
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+const STREAM_PACE_MS = 8
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+const STREAM_DELTA_COUNT = 120
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+const COMPARISON_TURNS = 8
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+const COMPARISON_DELTA_COUNT = 24
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+const COMPARISON_TOOL_INTERVAL = 3
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+const SOAK_TURNS = 100
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+const POST_SOAK_RENDER_TURN = SOAK_TURNS + 1
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+const SOAK_DELTA_COUNT = 8
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+const SOAK_TOOL_INTERVAL = 10
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+const SOAK_CHECKPOINT_INTERVAL = 10
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+const LONG_CONTINUATION_USER_PREFIX = 'LONG_CONTINUATION_USER'
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+const LONG_CONTINUATION_FIRST_PREFIX = 'LONG_CONTINUATION_FIRST'
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+const LONG_CONTINUATION_DONE_PREFIX = 'LONG_CONTINUATION_DONE'
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+const SOAK_USER_PREFIX = 'SOAK_CONVERSATION_USER'
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+const SOAK_FIRST_PREFIX = 'SOAK_CONVERSATION_FIRST'
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+const SOAK_DONE_PREFIX = 'SOAK_CONVERSATION_DONE'
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+const LIVE_PROMPT_MARKER = 'STREAM_PERF_USER_INPUT'
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+const STREAM_FIRST_MARKER = 'STREAM_PERF_FIRST'
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+const STREAM_DONE_MARKER = 'STREAM_PERF_DONE'
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+const LIVE_PROMPT = [
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+ LIVE_PROMPT_MARKER,
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+ 'Analyze the following mixed-language project context and return a concise diagnostic.',
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+ ...Array.from(
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+ { length: 48 },
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+ (_, index) =>
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+ `Context ${String(index + 1).padStart(2, '0')}: 用户正在检查长会话中的增量渲染性能。`
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+ + ` Preserve item ${String(index)} and compare ${'payload'.repeat(8)}.`,
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+ ),
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+ '```ts',
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+ ...Array.from(
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+ { length: 40 },
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+ (_, index) => `const sample_${String(index)} = ${JSON.stringify(`value-${String(index)}-${'x'.repeat(32)}`)}`,
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+ ),
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+ '```',
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+].join('\n')
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+const STREAM_DELTAS = Array.from({ length: STREAM_DELTA_COUNT }, (_, index) => {
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+ if (index === 0) return `${STREAM_FIRST_MARKER} `
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+ if (index === STREAM_DELTA_COUNT - 1) return `${STREAM_DONE_MARKER}.`
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+ return `chunk-${String(index).padStart(3, '0')} ${'response'.repeat(3)} `
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+})
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+
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+interface ChromiumMetrics {
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+ readonly [name: string]: number
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+}
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+
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+interface Measurement {
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+ readonly wallMs: number
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+ readonly taskMs: number
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+ readonly scriptMs: number
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+ readonly layoutMs: number
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+ readonly recalcStyleMs: number
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+ readonly devtoolsMs: number
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+ readonly nodesDelta: number
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+ readonly listenersDelta: number
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+ readonly heapDeltaMb: number
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+ readonly totalNodes: number
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+ readonly heapMb: number
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+}
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+
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+interface MutationProbeResult {
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+ readonly batches: number
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+ readonly records: number
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+}
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+
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+interface UserRenderProbeResult {
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+ readonly trustedClick: boolean
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+ readonly sendToDomMs: number
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+ readonly sendToPaintMs: number
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+ readonly domToPaintMs: number
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+ readonly mutationBatches: number
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+ readonly mutationRecords: number
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+}
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+
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+interface RetainedBrowserState {
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+ readonly domElements: number
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+ readonly nodes: number
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+ readonly listeners: number
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+ readonly heapMb: number
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+}
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+
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+interface ContinuedTurnReport {
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+ readonly ordinal: number
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+ readonly resultingTurns: number
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+ readonly kind: 'text' | 'tool'
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+ readonly promptChars: number
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+ readonly composerFill: Measurement
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+ readonly stream: MutationProbeResult & Measurement & {
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+ readonly paceMs: number
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+ readonly deltaChunks: number
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+ readonly persistedChunks: number
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+ readonly toolCalls: number
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+ readonly toolResults: number
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+ readonly clickToUserEchoMs: number
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+ readonly clickToFirstChunkMs: number
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+ readonly firstChunkToSettledMs: number
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+ }
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+}
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+
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+interface ConversationTurnSpec {
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+ readonly prompt: string
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+ readonly deltas: readonly string[]
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+ readonly userMarker: string
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+ readonly firstMarker: string
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+ readonly doneMarker: string
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+ readonly toolResultMarker?: string
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+}
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+
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+interface RetainedCheckpoint {
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+ readonly turns: number
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+ readonly state: RetainedBrowserState
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+}
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+
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+interface ConversationReport {
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+ readonly startingTurns: number
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+ readonly turnsAdded: number
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+ readonly toolTurns: number
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+ readonly retainedBefore: RetainedBrowserState
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+ readonly retainedAfter: RetainedBrowserState
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+ readonly retainedDelta: RetainedBrowserState
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+ readonly checkpoints: readonly RetainedCheckpoint[]
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+ readonly turns: readonly ContinuedTurnReport[]
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+}
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+
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+interface PerformanceWorld {
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+ readonly scaffold: WebScaffold
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+ readonly page: Page
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+ readonly tripwire: ReturnType<typeof watchConsole>
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+ readonly sessionEvents: SessionEvent[]
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+ readonly setupMs: number
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+ readonly replayDir?: string
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+}
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+
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+interface PerformanceWorldOptions {
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+ readonly browser: Browser
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+ readonly replay?: ReplayOverrideDoc
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+ readonly sidebarSessions?: number
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+ readonly seedLongHistory?: boolean
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+}
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+
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+function text(value: string): { type: 'text'; text: string }[] {
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+ return [{ type: 'text', text: value }]
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+}
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+
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+function appendTitle(session: Session, title: string, messageSeq: number): void {
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+ session.append('session/title', {
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+ title,
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+ messageSeqs: [messageSeq],
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+ source: { kind: 'fallback' },
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+ })
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+}
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+
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+function appendRequestHeader(session: Session, turn: number, step: number): void {
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+ session.append('request/header', {
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+ header: {
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+ config: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
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+ system: `Synthetic performance system prompt for turn ${String(turn)}, step ${String(step)}.`,
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+ },
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+ reason: turn === 1 && step === 1 ? 'initial' : 'change',
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+ })
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+}
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+
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+function appendAssistant(
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+ session: Session,
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+ turn: number,
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+ step: number,
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+ body: string,
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+): void {
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+ session.append('assistant/message', {
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+ turn,
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+ step,
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+ message: createAssistantMessage({
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+ content: text(body),
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+ source: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
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+ }),
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+ usage: {
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+ inputTokens: 4_000 + turn * 10,
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+ outputTokens: 200 + step * 20,
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+ cacheReadTokens: turn % 2 === 0 ? 2_000 : 0,
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+ },
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+ }, { surfaceOp: 'append' })
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+}
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+
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+function appendToolStep(
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+ session: Session,
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+ turn: number,
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+ step: number,
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+ toolCount: number,
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+): void {
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+ const calls = Array.from({ length: toolCount }, (_, index) => {
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+ const callId = CallId(`perf-call-${String(turn)}-${String(index)}`)
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+ const args = JSON.stringify({
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+ turn,
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+ index,
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+ payload: 'x'.repeat(120),
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+ })
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+ return { callId, index, args }
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+ })
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+
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+ session.append('assistant/message', {
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+ turn,
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+ step,
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+ message: createAssistantMessage({
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+ content: [
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+ {
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+ type: 'reasoning',
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+ text: `Dispatching ${String(toolCount)} synthetic tools for turn ${String(turn)}.`,
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+ },
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+ ...calls.map(({ callId, args }) => ({
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+ type: 'tool-call' as const,
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+ id: callId,
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+ name: 'synthetic_tool',
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+ arguments: args,
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+ })),
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+ ],
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+ source: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
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+ }),
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+ usage: {
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+ inputTokens: 6_000 + turn * 10,
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+ outputTokens: 500,
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+ cacheReadTokens: 3_000,
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+ reasoningTokens: 50,
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+ },
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+ }, { surfaceOp: 'append' })
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+
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+ const callEvents = calls.map(({ callId, args }) =>
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+ session.append('tool/call', {
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+ turn,
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+ step,
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+ callId,
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+ name: 'synthetic_tool',
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+ arguments: args,
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+ }))
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+
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+ for (const [index, call] of calls.entries()) {
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+ const source = callEvents[index]
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+ if (source === undefined) throw new Error(`missing synthetic tool call ${String(index)}`)
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+ session.append('tool/result', {
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+ turn,
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+ step,
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+ message: createToolResultMessage({
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+ callId: call.callId,
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+ content: text(
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+ `synthetic result turn=${String(turn)} index=${String(call.index)} ${'r'.repeat(400)}`,
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+ ),
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+ isError: false,
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+ }),
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+ }, { surfaceOp: 'append', sourceEventSeqs: [source.seq] })
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+ }
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+}
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+
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+function fencedCode(turn: number): string {
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+ if (turn % 25 !== 0) return ''
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+ const lines = Array.from(
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+ { length: 80 },
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+ (_, index) => `const value_${String(index)} = ${String(turn + index)}`,
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+ )
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+ return `\n\n\`\`\`ts\n${lines.join('\n')}\n\`\`\``
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+}
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+
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+function fixtureLog(session: Session): string {
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+ const header = {
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+ type: 'session',
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+ version: SESSION_FORMAT_VERSION,
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+ id: '{{sessionId}}',
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+ createdAt: Date.now() - 60_000,
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+ cwd: '{{cwd}}',
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+ }
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+ return [
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+ JSON.stringify(header),
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+ ...session.events.map(event => JSON.stringify(event)),
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+ '',
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+ ].join('\n')
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+}
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+
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+function smallSidebarFixture(): string {
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+ const session = new Session(SessionId('perf-small-template'))
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+ session.append('turn/start', {
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+ turn: 1,
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+ trigger: { kind: 'message', source: { kind: 'user' } },
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+ })
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+ const user = session.append('user/message', createUserMessage({
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+ content: text('Inspect this compact synthetic session.'),
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+ source: { kind: 'user' },
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+ }), { surfaceOp: 'append' })
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+ appendTitle(session, 'Synthetic sidebar session', user.seq)
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+ session.append('step/start', { turn: 1, step: 1 })
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+ appendRequestHeader(session, 1, 1)
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+ appendToolStep(session, 1, 1, 2)
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+ session.append('step/end', { turn: 1, step: 1 })
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+ session.append('step/start', { turn: 1, step: 2 })
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+ appendRequestHeader(session, 1, 2)
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+ appendAssistant(session, 1, 2, 'Synthetic sidebar fixture complete.')
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+ session.append('step/end', { turn: 1, step: 2 })
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+ session.append('turn/end', { turn: 1, reason: { kind: 'completed' } })
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+ return fixtureLog(session)
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+}
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+
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+function longHistoryFixture(): string {
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+ const session = new Session(SessionId(LONG_SESSION_ID))
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+ for (let turn = 1; turn <= LONG_HISTORY_TURNS; turn += 1) {
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+ session.append('turn/start', {
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+ turn,
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+ trigger: { kind: 'message', source: { kind: 'user' } },
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+ })
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+ const user = session.append('user/message', createUserMessage({
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+ content: text(
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+ `LONG_PERF_SENTINEL turn ${String(turn)}: analyze payload ${'u'.repeat(200)}`,
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+ ),
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+ source: { kind: 'user' },
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+ }), { surfaceOp: 'append' })
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+ if (turn === 1) appendTitle(session, LONG_SESSION_TITLE, user.seq)
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+
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+ session.append('step/start', { turn, step: 1 })
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+ appendRequestHeader(session, turn, 1)
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+ if (turn % TOOL_TURN_INTERVAL === 0) {
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+ appendToolStep(session, turn, 1, TOOLS_PER_TOOL_TURN)
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+ session.append('step/end', { turn, step: 1 })
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+ session.append('step/start', { turn, step: 2 })
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+ appendRequestHeader(session, turn, 2)
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+ appendAssistant(
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+ session,
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+ turn,
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+ 2,
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+ `All synthetic tools completed for turn ${String(turn)}. ${'z'.repeat(320)}${fencedCode(turn)}`,
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+ )
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+ session.append('step/end', { turn, step: 2 })
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+ } else {
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+ appendAssistant(
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+ session,
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+ turn,
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+ 1,
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+ `Synthetic assistant response for turn ${String(turn)}. ${'a'.repeat(320)}${fencedCode(turn)}`,
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+ )
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+ session.append('step/end', { turn, step: 1 })
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+ }
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+ session.append('turn/end', { turn, reason: { kind: 'completed' } })
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+ }
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+ return fixtureLog(session)
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+}
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+
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+function textStream(deltas: readonly string[], inputTokens: number): StreamChunk[] {
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+ const response = deltas.join('')
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+ return [
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+ { type: 'block-start', index: 0, blockType: 'text' },
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+ ...deltas.map(text => ({
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+ type: 'text-delta' as const,
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+ index: 0,
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+ text,
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+ })),
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+ {
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+ type: 'block-end',
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+ index: 0,
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+ block: { type: 'text', text: response },
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+ },
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+ {
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+ type: 'usage',
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+ usage: {
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+ inputTokens,
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+ outputTokens: Math.ceil(response.length / 4),
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+ },
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+ },
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|
|
+ { type: 'finish', reason: { kind: 'stop' } },
|
|
|
+ ]
|
|
|
+}
|
|
|
+
|
|
|
+function comparisonPrompt(index: number): string {
|
|
|
+ if (index === COMPARISON_TURNS) return LIVE_PROMPT
|
|
|
+ return (`${LONG_CONTINUATION_USER_PREFIX}_${String(index)} `
|
|
|
+ + `继续分析这个长会话的第 ${String(index)} 个增量问题，并保留当前滚动和输入响应。 `
|
|
|
+ + 'context '.repeat(80)).trimEnd()
|
|
|
+}
|
|
|
+
|
|
|
+function comparisonDeltas(index: number): string[] {
|
|
|
+ if (index === COMPARISON_TURNS) return STREAM_DELTAS
|
|
|
+ return Array.from({ length: COMPARISON_DELTA_COUNT }, (_, chunkIndex) => {
|
|
|
+ if (chunkIndex === 0) return `${LONG_CONTINUATION_FIRST_PREFIX}_${String(index)} `
|
|
|
+ if (chunkIndex === COMPARISON_DELTA_COUNT - 1) {
|
|
|
+ return `${LONG_CONTINUATION_DONE_PREFIX}_${String(index)}.`
|
|
|
+ }
|
|
|
+ return `turn-${String(index)}-chunk-${String(chunkIndex).padStart(2, '0')} ${'response'.repeat(2)} `
|
|
|
+ })
|
|
|
+}
|
|
|
+
|
|
|
+function comparisonTurn(index: number): ConversationTurnSpec {
|
|
|
+ const toolResultMarker = index % COMPARISON_TOOL_INTERVAL === 0
|
|
|
+ ? `LONG_CONTINUATION_TOOL_RESULT_${String(index)}`
|
|
|
+ : undefined
|
|
|
+ return {
|
|
|
+ prompt: comparisonPrompt(index),
|
|
|
+ deltas: comparisonDeltas(index),
|
|
|
+ userMarker: index === COMPARISON_TURNS
|
|
|
+ ? LIVE_PROMPT_MARKER
|
|
|
+ : `${LONG_CONTINUATION_USER_PREFIX}_${String(index)}`,
|
|
|
+ firstMarker: index === COMPARISON_TURNS
|
|
|
+ ? STREAM_FIRST_MARKER
|
|
|
+ : `${LONG_CONTINUATION_FIRST_PREFIX}_${String(index)}`,
|
|
|
+ doneMarker: index === COMPARISON_TURNS
|
|
|
+ ? STREAM_DONE_MARKER
|
|
|
+ : `${LONG_CONTINUATION_DONE_PREFIX}_${String(index)}`,
|
|
|
+ ...toolResultMarker === undefined ? {} : { toolResultMarker },
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+function soakTurn(index: number): ConversationTurnSpec {
|
|
|
+ const suffix = String(index).padStart(3, '0')
|
|
|
+ const toolResultMarker = index % SOAK_TOOL_INTERVAL === 0
|
|
|
+ ? `SOAK_CONVERSATION_TOOL_RESULT_${suffix}`
|
|
|
+ : undefined
|
|
|
+ return {
|
|
|
+ prompt: (`${SOAK_USER_PREFIX}_${suffix} `
|
|
|
+ + `持续对话第 ${String(index)} 轮，检查增量渲染与保留状态。 `
|
|
|
+ + 'context '.repeat(20)).trimEnd(),
|
|
|
+ deltas: Array.from({ length: SOAK_DELTA_COUNT }, (_, chunkIndex) => {
|
|
|
+ if (chunkIndex === 0) return `${SOAK_FIRST_PREFIX}_${suffix} `
|
|
|
+ if (chunkIndex === SOAK_DELTA_COUNT - 1) return `${SOAK_DONE_PREFIX}_${suffix}.`
|
|
|
+ return `soak-${suffix}-${String(chunkIndex).padStart(2, '0')} response `
|
|
|
+ }),
|
|
|
+ userMarker: `${SOAK_USER_PREFIX}_${suffix}`,
|
|
|
+ firstMarker: `${SOAK_FIRST_PREFIX}_${suffix}`,
|
|
|
+ doneMarker: `${SOAK_DONE_PREFIX}_${suffix}`,
|
|
|
+ ...toolResultMarker === undefined ? {} : { toolResultMarker },
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+function toolStream(index: number, marker: string): StreamChunk[] {
|
|
|
+ const callId = CallId(`performance-tool-${marker.toLowerCase()}-${String(index)}`)
|
|
|
+ const args = JSON.stringify({
|
|
|
+ command: `printf '${marker}\\n'`,
|
|
|
+ description: `Emit performance marker ${String(index)}`,
|
|
|
+ })
|
|
|
+ return [
|
|
|
+ { type: 'block-start', index: 0, blockType: 'tool-call' },
|
|
|
+ {
|
|
|
+ type: 'tool-call-delta',
|
|
|
+ index: 0,
|
|
|
+ id: callId,
|
|
|
+ name: 'bash',
|
|
|
+ argumentsDelta: args,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ type: 'block-end',
|
|
|
+ index: 0,
|
|
|
+ block: { type: 'tool-call', id: callId, name: 'bash', arguments: args },
|
|
|
+ },
|
|
|
+ { type: 'usage', usage: { inputTokens: 256, outputTokens: 32 } },
|
|
|
+ { type: 'finish', reason: { kind: 'tool-calls' } },
|
|
|
+ ]
|
|
|
+}
|
|
|
+
|
|
|
+function performanceReplayOverride(
|
|
|
+ turnCount: number,
|
|
|
+ turnSpec: (index: number) => ConversationTurnSpec,
|
|
|
+): ReplayOverrideDoc {
|
|
|
+ const continuationEntries = Array.from(
|
|
|
+ { length: turnCount },
|
|
|
+ (_, offset): ReplayEntry[] => {
|
|
|
+ const index = offset + 1
|
|
|
+ const spec = turnSpec(index)
|
|
|
+ const finalResponse: ReplayEntry = {
|
|
|
+ kind: 'chunks',
|
|
|
+ chunks: textStream(spec.deltas, Math.ceil(spec.prompt.length / 4)),
|
|
|
+ }
|
|
|
+ return spec.toolResultMarker === undefined
|
|
|
+ ? [finalResponse]
|
|
|
+ : [{ kind: 'chunks', chunks: toolStream(index, spec.toolResultMarker) }, finalResponse]
|
|
|
+ },
|
|
|
+ ).flat()
|
|
|
+ return continuationEntries
|
|
|
+}
|
|
|
+
|
|
|
+function rounded(value: number): number {
|
|
|
+ return Math.round(value * 1_000) / 1_000
|
|
|
+}
|
|
|
+
|
|
|
+async function chromiumMetrics(cdp: CDPSession): Promise<ChromiumMetrics> {
|
|
|
+ const payload = await cdp.send('Performance.getMetrics')
|
|
|
+ return Object.fromEntries(payload.metrics.map(metric => [metric.name, metric.value]))
|
|
|
+}
|
|
|
+
|
|
|
+async function retainedBrowserState(
|
|
|
+ cdp: CDPSession,
|
|
|
+ page: Page,
|
|
|
+): Promise<RetainedBrowserState> {
|
|
|
+ await cdp.send('HeapProfiler.collectGarbage')
|
|
|
+ const metrics = await chromiumMetrics(cdp)
|
|
|
+ return {
|
|
|
+ domElements: await page.evaluate(() => document.querySelectorAll('*').length),
|
|
|
+ nodes: requiredMetric(metrics, 'Nodes'),
|
|
|
+ listeners: requiredMetric(metrics, 'JSEventListeners'),
|
|
|
+ heapMb: rounded(requiredMetric(metrics, 'JSHeapUsedSize') / 1_048_576),
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+function requiredMetric(metrics: ChromiumMetrics, name: string): number {
|
|
|
+ const value = metrics[name]
|
|
|
+ if (value === undefined) throw new Error(`Chromium performance metric ${name} is unavailable`)
|
|
|
+ return value
|
|
|
+}
|
|
|
+
|
|
|
+function metricDelta(
|
|
|
+ before: ChromiumMetrics,
|
|
|
+ after: ChromiumMetrics,
|
|
|
+ wallMs: number,
|
|
|
+): Measurement {
|
|
|
+ return {
|
|
|
+ wallMs: rounded(wallMs),
|
|
|
+ taskMs: rounded((requiredMetric(after, 'TaskDuration') - requiredMetric(before, 'TaskDuration')) * 1_000),
|
|
|
+ scriptMs: rounded((requiredMetric(after, 'ScriptDuration') - requiredMetric(before, 'ScriptDuration')) * 1_000),
|
|
|
+ layoutMs: rounded((requiredMetric(after, 'LayoutDuration') - requiredMetric(before, 'LayoutDuration')) * 1_000),
|
|
|
+ recalcStyleMs: rounded(
|
|
|
+ (requiredMetric(after, 'RecalcStyleDuration') - requiredMetric(before, 'RecalcStyleDuration')) * 1_000,
|
|
|
+ ),
|
|
|
+ devtoolsMs: rounded(
|
|
|
+ (requiredMetric(after, 'DevToolsCommandDuration') - requiredMetric(before, 'DevToolsCommandDuration')) * 1_000,
|
|
|
+ ),
|
|
|
+ nodesDelta: requiredMetric(after, 'Nodes') - requiredMetric(before, 'Nodes'),
|
|
|
+ listenersDelta: requiredMetric(after, 'JSEventListeners') - requiredMetric(before, 'JSEventListeners'),
|
|
|
+ heapDeltaMb: rounded(
|
|
|
+ (requiredMetric(after, 'JSHeapUsedSize') - requiredMetric(before, 'JSHeapUsedSize')) / 1_048_576,
|
|
|
+ ),
|
|
|
+ totalNodes: requiredMetric(after, 'Nodes'),
|
|
|
+ heapMb: rounded(requiredMetric(after, 'JSHeapUsedSize') / 1_048_576),
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+async function measure<T>(
|
|
|
+ cdp: CDPSession,
|
|
|
+ action: () => Promise<T>,
|
|
|
+): Promise<{ measurement: Measurement; value: T }> {
|
|
|
+ const before = await chromiumMetrics(cdp)
|
|
|
+ const started = performance.now()
|
|
|
+ const value = await action()
|
|
|
+ const wallMs = performance.now() - started
|
|
|
+ const after = await chromiumMetrics(cdp)
|
|
|
+ return { measurement: metricDelta(before, after, wallMs), value }
|
|
|
+}
|
|
|
+
|
|
|
+async function startMutationProbe(page: Page): Promise<void> {
|
|
|
+ await page.evaluate(() => {
|
|
|
+ const target = document.querySelector('[class*="centerCol"]')
|
|
|
+ if (target === null) throw new Error('stream mutation probe target is unavailable')
|
|
|
+ const probe = {
|
|
|
+ batches: 0,
|
|
|
+ records: 0,
|
|
|
+ observer: undefined as MutationObserver | undefined,
|
|
|
+ }
|
|
|
+ const observer = new MutationObserver((records) => {
|
|
|
+ probe.batches += 1
|
|
|
+ probe.records += records.length
|
|
|
+ })
|
|
|
+ probe.observer = observer
|
|
|
+ observer.observe(target, {
|
|
|
+ attributes: true,
|
|
|
+ attributeFilter: ['data-streaming'],
|
|
|
+ characterData: true,
|
|
|
+ childList: true,
|
|
|
+ subtree: true,
|
|
|
+ })
|
|
|
+ Reflect.set(globalThis, '__dshPerfMutationProbe', probe)
|
|
|
+ })
|
|
|
+}
|
|
|
+
|
|
|
+async function stopMutationProbe(page: Page): Promise<MutationProbeResult> {
|
|
|
+ return page.evaluate(() => {
|
|
|
+ const probe = Reflect.get(globalThis, '__dshPerfMutationProbe') as
|
|
|
+ | { batches: number; records: number; observer: MutationObserver }
|
|
|
+ | undefined
|
|
|
+ if (probe === undefined) throw new Error('stream mutation probe was not started')
|
|
|
+ probe.observer.disconnect()
|
|
|
+ Reflect.deleteProperty(globalThis, '__dshPerfMutationProbe')
|
|
|
+ return { batches: probe.batches, records: probe.records }
|
|
|
+ })
|
|
|
+}
|
|
|
+
|
|
|
+async function startUserRenderProbe(
|
|
|
+ page: Page,
|
|
|
+ marker: string,
|
|
|
+): Promise<void> {
|
|
|
+ const send = page.getByRole('button', { name: 'Send message', exact: true })
|
|
|
+ await send.waitFor({ timeout: 15_000 })
|
|
|
+ await expect.poll(() => send.isEnabled(), { timeout: 15_000 }).toBe(true)
|
|
|
+ await page.evaluate((expectedMarker) => {
|
|
|
+ const target = document.querySelector('[data-conversation-scroll]')
|
|
|
+ if (target === null) throw new Error('user render probe target is unavailable')
|
|
|
+ const probe: {
|
|
|
+ sendAt?: number
|
|
|
+ domAt?: number
|
|
|
+ paintAt?: number
|
|
|
+ trustedClick?: boolean
|
|
|
+ batches: number
|
|
|
+ records: number
|
|
|
+ observer?: MutationObserver
|
|
|
+ pollForMarker?: () => void
|
|
|
+ } = { batches: 0, records: 0 }
|
|
|
+ const transcriptContainsMarker = (): boolean => {
|
|
|
+ // The composer projects the draft into a backdrop and hidden sizing
|
|
|
+ // mirror; only a matching text node outside that card proves delivery.
|
|
|
+ const walker = document.createTreeWalker(target, NodeFilter.SHOW_TEXT)
|
|
|
+ for (let node = walker.nextNode(); node !== null; node = walker.nextNode()) {
|
|
|
+ if (!node.textContent?.includes(expectedMarker)) continue
|
|
|
+ const parent = node.parentElement
|
|
|
+ if (parent !== null && parent.closest('[data-composer-card]') === null) return true
|
|
|
+ }
|
|
|
+ return false
|
|
|
+ }
|
|
|
+ const markDomVisible = (): void => {
|
|
|
+ if (
|
|
|
+ probe.sendAt === undefined
|
|
|
+ || probe.domAt !== undefined
|
|
|
+ || !transcriptContainsMarker()
|
|
|
+ ) return
|
|
|
+ probe.domAt = globalThis.performance.now()
|
|
|
+ // The second callback runs only after a render opportunity for the DOM
|
|
|
+ // insertion observed before the first callback.
|
|
|
+ requestAnimationFrame(() => {
|
|
|
+ requestAnimationFrame(() => {
|
|
|
+ probe.paintAt = globalThis.performance.now()
|
|
|
+ observer.disconnect()
|
|
|
+ })
|
|
|
+ })
|
|
|
+ }
|
|
|
+ const pollForMarker = (): void => {
|
|
|
+ markDomVisible()
|
|
|
+ if (probe.domAt === undefined) requestAnimationFrame(pollForMarker)
|
|
|
+ }
|
|
|
+ const observer = new MutationObserver((records) => {
|
|
|
+ if (probe.sendAt === undefined) return
|
|
|
+ probe.batches += 1
|
|
|
+ probe.records += records.length
|
|
|
+ markDomVisible()
|
|
|
+ })
|
|
|
+ probe.observer = observer
|
|
|
+ probe.pollForMarker = pollForMarker
|
|
|
+ observer.observe(target, {
|
|
|
+ attributes: true,
|
|
|
+ attributeFilter: ['data-streaming'],
|
|
|
+ characterData: true,
|
|
|
+ childList: true,
|
|
|
+ subtree: true,
|
|
|
+ })
|
|
|
+ Reflect.set(globalThis, '__dshPerfUserRenderProbe', probe)
|
|
|
+ }, marker)
|
|
|
+ await send.evaluate((button) => {
|
|
|
+ button.addEventListener('click', (event) => {
|
|
|
+ const probe = Reflect.get(globalThis, '__dshPerfUserRenderProbe') as
|
|
|
+ | { sendAt?: number; trustedClick?: boolean; pollForMarker?: () => void }
|
|
|
+ | undefined
|
|
|
+ if (probe?.pollForMarker === undefined) throw new Error('user render probe was not started')
|
|
|
+ probe.trustedClick = event.isTrusted
|
|
|
+ probe.sendAt = globalThis.performance.now()
|
|
|
+ requestAnimationFrame(probe.pollForMarker)
|
|
|
+ }, { capture: true, once: true })
|
|
|
+ })
|
|
|
+}
|
|
|
+
|
|
|
+async function triggerUserRenderProbe(page: Page): Promise<void> {
|
|
|
+ const send = page.getByRole('button', { name: 'Send message', exact: true })
|
|
|
+ await send.click()
|
|
|
+}
|
|
|
+
|
|
|
+async function stopUserRenderProbe(
|
|
|
+ page: Page,
|
|
|
+ marker: string,
|
|
|
+): Promise<UserRenderProbeResult> {
|
|
|
+ try {
|
|
|
+ await page.waitForFunction(() => {
|
|
|
+ const probe = Reflect.get(globalThis, '__dshPerfUserRenderProbe') as
|
|
|
+ | { paintAt?: number }
|
|
|
+ | undefined
|
|
|
+ return probe?.paintAt !== undefined
|
|
|
+ }, undefined, { timeout: 15_000 })
|
|
|
+ } catch (error) {
|
|
|
+ const diagnostic = await page.evaluate((expectedMarker) => {
|
|
|
+ const probe = Reflect.get(globalThis, '__dshPerfUserRenderProbe') as
|
|
|
+ | {
|
|
|
+ sendAt?: number
|
|
|
+ domAt?: number
|
|
|
+ paintAt?: number
|
|
|
+ trustedClick?: boolean
|
|
|
+ batches: number
|
|
|
+ records: number
|
|
|
+ }
|
|
|
+ | undefined
|
|
|
+ const target = document.querySelector('[data-conversation-scroll]')
|
|
|
+ let markerOutsideComposer = false
|
|
|
+ if (target !== null) {
|
|
|
+ const walker = document.createTreeWalker(target, NodeFilter.SHOW_TEXT)
|
|
|
+ for (let node = walker.nextNode(); node !== null; node = walker.nextNode()) {
|
|
|
+ if (!node.textContent?.includes(expectedMarker)) continue
|
|
|
+ const parent = node.parentElement
|
|
|
+ if (parent !== null && parent.closest('[data-composer-card]') === null) {
|
|
|
+ markerOutsideComposer = true
|
|
|
+ break
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return {
|
|
|
+ probe,
|
|
|
+ markerOutsideComposer,
|
|
|
+ markerInComposer: document.querySelector('[data-composer-card]')
|
|
|
+ ?.textContent?.includes(expectedMarker) ?? false,
|
|
|
+ }
|
|
|
+ }, marker)
|
|
|
+ throw new Error(`user render probe timed out: ${JSON.stringify(diagnostic)}`, { cause: error })
|
|
|
+ }
|
|
|
+ return page.evaluate(() => {
|
|
|
+ const probe = Reflect.get(globalThis, '__dshPerfUserRenderProbe') as
|
|
|
+ | {
|
|
|
+ sendAt?: number
|
|
|
+ domAt?: number
|
|
|
+ paintAt?: number
|
|
|
+ trustedClick?: boolean
|
|
|
+ batches: number
|
|
|
+ records: number
|
|
|
+ }
|
|
|
+ | undefined
|
|
|
+ Reflect.deleteProperty(globalThis, '__dshPerfUserRenderProbe')
|
|
|
+ if (
|
|
|
+ probe?.trustedClick !== true
|
|
|
+ || probe.sendAt === undefined
|
|
|
+ || probe.domAt === undefined
|
|
|
+ || probe.paintAt === undefined
|
|
|
+ ) {
|
|
|
+ throw new Error('user render probe did not observe a trusted click, DOM insertion, and paint')
|
|
|
+ }
|
|
|
+ return {
|
|
|
+ trustedClick: probe.trustedClick,
|
|
|
+ sendToDomMs: probe.domAt - probe.sendAt,
|
|
|
+ sendToPaintMs: probe.paintAt - probe.sendAt,
|
|
|
+ domToPaintMs: probe.paintAt - probe.domAt,
|
|
|
+ mutationBatches: probe.batches,
|
|
|
+ mutationRecords: probe.records,
|
|
|
+ }
|
|
|
+ })
|
|
|
+}
|
|
|
+
|
|
|
+async function stableCount(
|
|
|
+ locator: Locator,
|
|
|
+ accepts: (count: number) => boolean,
|
|
|
+ timeoutMs = 60_000,
|
|
|
+): Promise<number> {
|
|
|
+ const deadline = performance.now() + timeoutMs
|
|
|
+ let previous = -1
|
|
|
+ let stableReads = 0
|
|
|
+ while (performance.now() < deadline) {
|
|
|
+ const count = await locator.count()
|
|
|
+ stableReads = accepts(count) && count === previous ? stableReads + 1 : 0
|
|
|
+ if (stableReads >= 4) return count
|
|
|
+ previous = count
|
|
|
+ await new Promise(resolve => setTimeout(resolve, 50))
|
|
|
+ }
|
|
|
+ throw new Error(`browser row count did not stabilize; last count ${String(previous)}`)
|
|
|
+}
|
|
|
+
|
|
|
+async function conversationTurns(page: Page): Promise<number> {
|
|
|
+ const stats = page.getByText(/\d+ turns · \d+ steps/, { exact: true }).last()
|
|
|
+ await stats.waitFor({ timeout: 15_000 })
|
|
|
+ const value = await stats.textContent()
|
|
|
+ const match = value?.match(/^(\d+) turns · \d+ steps$/)
|
|
|
+ if (match?.[1] === undefined) throw new Error(`unexpected conversation stats ${JSON.stringify(value)}`)
|
|
|
+ return Number(match[1])
|
|
|
+}
|
|
|
+
|
|
|
+function retainedDelta(
|
|
|
+ before: RetainedBrowserState,
|
|
|
+ after: RetainedBrowserState,
|
|
|
+): RetainedBrowserState {
|
|
|
+ return {
|
|
|
+ domElements: after.domElements - before.domElements,
|
|
|
+ nodes: after.nodes - before.nodes,
|
|
|
+ listeners: after.listeners - before.listeners,
|
|
|
+ heapMb: rounded(after.heapMb - before.heapMb),
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+async function launchPerformanceWorld(
|
|
|
+ options: PerformanceWorldOptions,
|
|
|
+): Promise<PerformanceWorld> {
|
|
|
+ const setupStarted = performance.now()
|
|
|
+ let replayDir: string | undefined
|
|
|
+ let scaffold: WebScaffold | undefined
|
|
|
+ let page: Page | undefined
|
|
|
+ try {
|
|
|
+ if (options.replay === undefined) {
|
|
|
+ scaffold = await launchWebScaffold()
|
|
|
+ } else {
|
|
|
+ replayDir = await mkdtemp(join(tmpdir(), 'dsh-web-perf-replay-'))
|
|
|
+ const replayOverride = join(replayDir, 'replay.override.json')
|
|
|
+ await writeFile(replayOverride, JSON.stringify(options.replay))
|
|
|
+ scaffold = await launchWebScaffold({
|
|
|
+ // The override-only fixture supplies one positional script for this
|
|
|
+ // world's single live session.
|
|
|
+ replayFixture: join(replayDir, 'override-only.jsonl'),
|
|
|
+ replayOverride,
|
|
|
+ paceMs: STREAM_PACE_MS,
|
|
|
+ replayContextWindow: PERF_REPLAY_CONTEXT_WINDOW,
|
|
|
+ })
|
|
|
+ }
|
|
|
+
|
|
|
+ const sessionEvents: SessionEvent[] = []
|
|
|
+ scaffold.ctx.on('session/event', (_session, event: SessionEvent) => {
|
|
|
+ sessionEvents.push(event)
|
|
|
+ })
|
|
|
+ if ((options.sidebarSessions ?? 0) > 0) {
|
|
|
+ const small = smallSidebarFixture()
|
|
|
+ for (let index = 0; index < (options.sidebarSessions ?? 0); index += 1) {
|
|
|
+ await seedSession(scaffold, small, `perf-sidebar-${String(index).padStart(4, '0')}`)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (options.seedLongHistory === true) {
|
|
|
+ await seedSession(scaffold, longHistoryFixture(), LONG_SESSION_ID)
|
|
|
+ }
|
|
|
+ const setupMs = performance.now() - setupStarted
|
|
|
+ page = await newEnglishPage(options.browser)
|
|
|
+ return {
|
|
|
+ scaffold,
|
|
|
+ page,
|
|
|
+ tripwire: watchConsole(page),
|
|
|
+ sessionEvents,
|
|
|
+ setupMs,
|
|
|
+ ...replayDir === undefined ? {} : { replayDir },
|
|
|
+ }
|
|
|
+ } catch (error) {
|
|
|
+ const failures: unknown[] = [error]
|
|
|
+ if (page !== undefined) {
|
|
|
+ try {
|
|
|
+ await page.close()
|
|
|
+ } catch (cleanupError) {
|
|
|
+ failures.push(cleanupError)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (scaffold !== undefined) {
|
|
|
+ try {
|
|
|
+ await scaffold.close()
|
|
|
+ } catch (cleanupError) {
|
|
|
+ failures.push(cleanupError)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (replayDir !== undefined) {
|
|
|
+ try {
|
|
|
+ await rm(replayDir, { recursive: true, force: true })
|
|
|
+ } catch (cleanupError) {
|
|
|
+ failures.push(cleanupError)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (failures.length === 1) throw error
|
|
|
+ throw new AggregateError(failures, 'web performance setup and cleanup failed')
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+async function closePerformanceWorld(world: PerformanceWorld): Promise<void> {
|
|
|
+ const failures: unknown[] = []
|
|
|
+ await world.page.close().catch((error: unknown) => failures.push(error))
|
|
|
+ await world.scaffold.close().catch((error: unknown) => failures.push(error))
|
|
|
+ if (world.replayDir !== undefined) {
|
|
|
+ await rm(world.replayDir, { recursive: true, force: true })
|
|
|
+ .catch((error: unknown) => failures.push(error))
|
|
|
+ }
|
|
|
+ if (failures.length === 1) throw failures[0]
|
|
|
+ if (failures.length > 1) throw new AggregateError(failures, 'web performance teardown failed')
|
|
|
+}
|
|
|
+
|
|
|
+async function openPerformancePage(
|
|
|
+ world: PerformanceWorld,
|
|
|
+ expectedSessions: number,
|
|
|
+): Promise<Locator> {
|
|
|
+ await world.page.goto(world.scaffold.baseUrl, { waitUntil: 'load' })
|
|
|
+ await world.page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
|
|
|
+ const group = world.page.getByRole('treeitem').first()
|
|
|
+ await expect.poll(() => group.textContent(), { timeout: 30_000 })
|
|
|
+ .toContain(`${String(expectedSessions)} ${expectedSessions === 1 ? 'session' : 'sessions'}`)
|
|
|
+ return group
|
|
|
+}
|
|
|
+
|
|
|
+async function openLongHistory(page: Page): Promise<number> {
|
|
|
+ await page.getByRole('textbox', { name: 'Search name, keywords...', exact: true })
|
|
|
+ .fill('LONG_PERF_SENTINEL')
|
|
|
+ const results = page.getByRole('tree', { name: 'Search results' }).getByRole('treeitem')
|
|
|
+ await expect.poll(() => results.count(), { timeout: 60_000 }).toBe(1)
|
|
|
+ await results.first().click()
|
|
|
+ await page.getByRole('tab', { name: 'Chat', exact: true }).waitFor({ timeout: 30_000 })
|
|
|
+ return conversationTurns(page)
|
|
|
+}
|
|
|
+
|
|
|
+async function continueConversation(
|
|
|
+ world: PerformanceWorld,
|
|
|
+ cdp: CDPSession,
|
|
|
+ options: {
|
|
|
+ readonly startingTurns: number
|
|
|
+ readonly turnCount: number
|
|
|
+ readonly turnSpec: (index: number) => ConversationTurnSpec
|
|
|
+ readonly expectedSessionId?: SessionId
|
|
|
+ readonly checkpointInterval?: number
|
|
|
+ },
|
|
|
+): Promise<ConversationReport> {
|
|
|
+ const composer = world.page.locator('textarea:enabled').last()
|
|
|
+ await composer.waitFor({ timeout: 15_000 })
|
|
|
+ const retainedBefore = await retainedBrowserState(cdp, world.page)
|
|
|
+ const checkpoints: RetainedCheckpoint[] = [{ turns: options.startingTurns, state: retainedBefore }]
|
|
|
+ const turns: ContinuedTurnReport[] = []
|
|
|
+ let liveSessionId = options.expectedSessionId
|
|
|
+
|
|
|
+ for (let index = 1; index <= options.turnCount; index += 1) {
|
|
|
+ const spec = options.turnSpec(index)
|
|
|
+ const composerFill = await measure(cdp, async () => {
|
|
|
+ await composer.fill(spec.prompt)
|
|
|
+ await expect.poll(() => composer.inputValue()).toBe(spec.prompt)
|
|
|
+ return (await composer.inputValue()).length
|
|
|
+ })
|
|
|
+ expect(composerFill.value).toBe(spec.prompt.length)
|
|
|
+
|
|
|
+ const eventStart = world.sessionEvents.length
|
|
|
+ await startMutationProbe(world.page)
|
|
|
+ const streamBefore = await chromiumMetrics(cdp)
|
|
|
+ const streamStarted = performance.now()
|
|
|
+ const settled = world.scaffold.whenTurnSettled(60_000)
|
|
|
+ await world.page.getByRole('button', { name: 'Send message', exact: true }).click()
|
|
|
+ await world.page.getByText(spec.userMarker, { exact: false }).last().waitFor({ timeout: 15_000 })
|
|
|
+ const clickToUserEchoMs = performance.now() - streamStarted
|
|
|
+ await world.page.getByText(spec.firstMarker, { exact: false }).last().waitFor({ timeout: 15_000 })
|
|
|
+ const clickToFirstChunkMs = performance.now() - streamStarted
|
|
|
+ const settledSessionId = await settled
|
|
|
+ if (liveSessionId === undefined) {
|
|
|
+ liveSessionId = settledSessionId
|
|
|
+ } else {
|
|
|
+ expect(settledSessionId).toBe(liveSessionId)
|
|
|
+ }
|
|
|
+ await expect.poll(
|
|
|
+ () => world.page.locator('[data-streaming="true"]').count(),
|
|
|
+ { timeout: 15_000 },
|
|
|
+ ).toBe(0)
|
|
|
+ await world.page.getByText(spec.doneMarker, { exact: false }).last().waitFor({ timeout: 15_000 })
|
|
|
+ const clickToSettledMs = performance.now() - streamStarted
|
|
|
+ const streamAfter = await chromiumMetrics(cdp)
|
|
|
+ const mutations = await stopMutationProbe(world.page)
|
|
|
+ const turnEvents = world.sessionEvents.slice(eventStart)
|
|
|
+ const chunks = turnEvents.filter(event => event.type === 'assistant/chunk')
|
|
|
+ const toolCalls = turnEvents.filter(event => event.type === 'tool/call')
|
|
|
+ const toolResults = turnEvents.filter(event => event.type === 'tool/result')
|
|
|
+ const toolTurn = spec.toolResultMarker !== undefined
|
|
|
+ expect(chunks).toHaveLength(spec.deltas.length + (toolTurn ? 9 : 4))
|
|
|
+ expect(toolCalls).toHaveLength(toolTurn ? 1 : 0)
|
|
|
+ expect(toolResults).toHaveLength(toolTurn ? 1 : 0)
|
|
|
+ if (spec.toolResultMarker !== undefined) {
|
|
|
+ expect(toolCalls[0]?.data.name).toBe('bash')
|
|
|
+ const toolResult = toolResults[0]
|
|
|
+ if (toolResult?.type !== 'tool/result') {
|
|
|
+ throw new Error(`continued turn ${String(index)} did not log its tool result`)
|
|
|
+ }
|
|
|
+ const resultBlock = toolResult.data.message.content.find(block => block.type === 'tool-result')
|
|
|
+ expect(resultBlock?.isError).toBe(false)
|
|
|
+ expect(resultBlock?.content
|
|
|
+ .filter(block => block.type === 'text')
|
|
|
+ .map(block => block.text)
|
|
|
+ .join('')).toContain(spec.toolResultMarker)
|
|
|
+ }
|
|
|
+ const user = turnEvents.find(
|
|
|
+ event => event.type === 'user/message' && event.data.source.kind === 'user',
|
|
|
+ )
|
|
|
+ if (user?.type !== 'user/message') {
|
|
|
+ throw new Error(`continued turn ${String(index)} did not log its user message`)
|
|
|
+ }
|
|
|
+ expect(user.data.content
|
|
|
+ .filter(block => block.type === 'text')
|
|
|
+ .map(block => block.text)
|
|
|
+ .join('')).toBe(spec.prompt)
|
|
|
+ const resultingTurns = await conversationTurns(world.page)
|
|
|
+ expect(resultingTurns).toBe(options.startingTurns + index)
|
|
|
+ turns.push({
|
|
|
+ ordinal: index,
|
|
|
+ resultingTurns,
|
|
|
+ kind: toolTurn ? 'tool' : 'text',
|
|
|
+ promptChars: spec.prompt.length,
|
|
|
+ composerFill: composerFill.measurement,
|
|
|
+ stream: {
|
|
|
+ paceMs: STREAM_PACE_MS,
|
|
|
+ deltaChunks: spec.deltas.length,
|
|
|
+ persistedChunks: chunks.length,
|
|
|
+ toolCalls: toolCalls.length,
|
|
|
+ toolResults: toolResults.length,
|
|
|
+ clickToUserEchoMs: rounded(clickToUserEchoMs),
|
|
|
+ clickToFirstChunkMs: rounded(clickToFirstChunkMs),
|
|
|
+ firstChunkToSettledMs: rounded(clickToSettledMs - clickToFirstChunkMs),
|
|
|
+ ...mutations,
|
|
|
+ ...metricDelta(streamBefore, streamAfter, clickToSettledMs),
|
|
|
+ },
|
|
|
+ })
|
|
|
+
|
|
|
+ if (options.checkpointInterval !== undefined && index % options.checkpointInterval === 0) {
|
|
|
+ checkpoints.push({
|
|
|
+ turns: options.startingTurns + index,
|
|
|
+ state: await retainedBrowserState(cdp, world.page),
|
|
|
+ })
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ const lastCheckpoint = checkpoints.at(-1)
|
|
|
+ const retainedAfter = lastCheckpoint?.turns === options.startingTurns + options.turnCount
|
|
|
+ ? lastCheckpoint.state
|
|
|
+ : await retainedBrowserState(cdp, world.page)
|
|
|
+ if (lastCheckpoint?.turns !== options.startingTurns + options.turnCount) {
|
|
|
+ checkpoints.push({ turns: options.startingTurns + options.turnCount, state: retainedAfter })
|
|
|
+ }
|
|
|
+ return {
|
|
|
+ startingTurns: options.startingTurns,
|
|
|
+ turnsAdded: options.turnCount,
|
|
|
+ toolTurns: turns.filter(turn => turn.kind === 'tool').length,
|
|
|
+ retainedBefore,
|
|
|
+ retainedAfter,
|
|
|
+ retainedDelta: retainedDelta(retainedBefore, retainedAfter),
|
|
|
+ checkpoints,
|
|
|
+ turns,
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+async function measurePostSoakUserRender(
|
|
|
+ world: PerformanceWorld,
|
|
|
+ cdp: CDPSession,
|
|
|
+): Promise<object> {
|
|
|
+ const spec = soakTurn(POST_SOAK_RENDER_TURN)
|
|
|
+ if (spec.toolResultMarker !== undefined) {
|
|
|
+ throw new Error('post-soak render probe must remain a text-only turn')
|
|
|
+ }
|
|
|
+ const composer = world.page.locator('textarea:enabled').last()
|
|
|
+ const composerFill = await measure(cdp, async () => {
|
|
|
+ await composer.fill(spec.prompt)
|
|
|
+ await expect.poll(() => composer.inputValue()).toBe(spec.prompt)
|
|
|
+ return (await composer.inputValue()).length
|
|
|
+ })
|
|
|
+ expect(composerFill.value).toBe(spec.prompt.length)
|
|
|
+
|
|
|
+ const eventStart = world.sessionEvents.length
|
|
|
+ await startUserRenderProbe(world.page, spec.userMarker)
|
|
|
+ const browserBefore = await chromiumMetrics(cdp)
|
|
|
+ const fullTurnStarted = performance.now()
|
|
|
+ const settled = world.scaffold.whenTurnSettled(60_000)
|
|
|
+ await triggerUserRenderProbe(world.page)
|
|
|
+ const browserTiming = await stopUserRenderProbe(world.page, spec.userMarker)
|
|
|
+ const browserAfter = await chromiumMetrics(cdp)
|
|
|
+ const browserAfterPaintSample = metricDelta(
|
|
|
+ browserBefore,
|
|
|
+ browserAfter,
|
|
|
+ performance.now() - fullTurnStarted,
|
|
|
+ )
|
|
|
+ await world.page.getByText(spec.firstMarker, { exact: false }).last().waitFor({ timeout: 15_000 })
|
|
|
+ const settledSessionId = await settled
|
|
|
+ await expect.poll(
|
|
|
+ () => world.page.locator('[data-streaming="true"]').count(),
|
|
|
+ { timeout: 15_000 },
|
|
|
+ ).toBe(0)
|
|
|
+ await world.page.getByText(spec.doneMarker, { exact: false }).last().waitFor({ timeout: 15_000 })
|
|
|
+ const fullTurnMs = performance.now() - fullTurnStarted
|
|
|
+
|
|
|
+ const turnEvents = world.sessionEvents.slice(eventStart)
|
|
|
+ const chunks = turnEvents.filter(event => event.type === 'assistant/chunk')
|
|
|
+ const user = turnEvents.find(
|
|
|
+ event => event.type === 'user/message' && event.data.source.kind === 'user',
|
|
|
+ )
|
|
|
+ if (user?.type !== 'user/message') throw new Error('post-soak render probe did not log its user message')
|
|
|
+ expect(user.data.content
|
|
|
+ .filter(block => block.type === 'text')
|
|
|
+ .map(block => block.text)
|
|
|
+ .join('')).toBe(spec.prompt)
|
|
|
+ expect(chunks).toHaveLength(spec.deltas.length + 4)
|
|
|
+ expect(turnEvents.filter(event => event.type === 'tool/call')).toHaveLength(0)
|
|
|
+ expect(turnEvents.filter(event => event.type === 'tool/result')).toHaveLength(0)
|
|
|
+ expect(world.scaffold.ctx.agents.get(settledSessionId)).toBeDefined()
|
|
|
+ expect(await conversationTurns(world.page)).toBe(POST_SOAK_RENDER_TURN)
|
|
|
+
|
|
|
+ return {
|
|
|
+ ordinal: POST_SOAK_RENDER_TURN,
|
|
|
+ resultingTurns: POST_SOAK_RENDER_TURN,
|
|
|
+ promptChars: spec.prompt.length,
|
|
|
+ composerFill: composerFill.measurement,
|
|
|
+ trustedClick: browserTiming.trustedClick,
|
|
|
+ sendToDomMs: rounded(browserTiming.sendToDomMs),
|
|
|
+ sendToPaintMs: rounded(browserTiming.sendToPaintMs),
|
|
|
+ domToPaintMs: rounded(browserTiming.domToPaintMs),
|
|
|
+ mutationBatchesThroughPaint: browserTiming.mutationBatches,
|
|
|
+ mutationRecordsThroughPaint: browserTiming.mutationRecords,
|
|
|
+ browserAfterPaintSample,
|
|
|
+ fullTurnMs: rounded(fullTurnMs),
|
|
|
+ persistedChunks: chunks.length,
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+function average(values: readonly number[]): number {
|
|
|
+ return rounded(values.reduce((sum, value) => sum + value, 0) / values.length)
|
|
|
+}
|
|
|
+
|
|
|
+function p95(values: readonly number[]): number {
|
|
|
+ const sorted = [...values].sort((left, right) => left - right)
|
|
|
+ return sorted[Math.max(0, Math.ceil(sorted.length * 0.95) - 1)] ?? 0
|
|
|
+}
|
|
|
+
|
|
|
+function summarizeTurnWindows(
|
|
|
+ turns: readonly ContinuedTurnReport[],
|
|
|
+ windowSize: number,
|
|
|
+): object[] {
|
|
|
+ const windows: object[] = []
|
|
|
+ for (let start = 0; start < turns.length; start += windowSize) {
|
|
|
+ const window = turns.slice(start, start + windowSize)
|
|
|
+ const streamWall = window.map(turn => turn.stream.wallMs)
|
|
|
+ const userEcho = window.map(turn => turn.stream.clickToUserEchoMs)
|
|
|
+ const firstChunk = window.map(turn => turn.stream.clickToFirstChunkMs)
|
|
|
+ windows.push({
|
|
|
+ turns: `${String(start + 1)}-${String(start + window.length)}`,
|
|
|
+ toolTurns: window.filter(turn => turn.kind === 'tool').length,
|
|
|
+ average: {
|
|
|
+ composerFillWallMs: average(window.map(turn => turn.composerFill.wallMs)),
|
|
|
+ streamWallMs: average(streamWall),
|
|
|
+ clickToUserEchoMs: average(userEcho),
|
|
|
+ clickToFirstChunkMs: average(firstChunk),
|
|
|
+ taskMs: average(window.map(turn => turn.stream.taskMs)),
|
|
|
+ scriptMs: average(window.map(turn => turn.stream.scriptMs)),
|
|
|
+ recalcStyleMs: average(window.map(turn => turn.stream.recalcStyleMs)),
|
|
|
+ mutationBatches: average(window.map(turn => turn.stream.batches)),
|
|
|
+ },
|
|
|
+ p95: {
|
|
|
+ streamWallMs: rounded(p95(streamWall)),
|
|
|
+ clickToUserEchoMs: rounded(p95(userEcho)),
|
|
|
+ clickToFirstChunkMs: rounded(p95(firstChunk)),
|
|
|
+ },
|
|
|
+ })
|
|
|
+ }
|
|
|
+ return windows
|
|
|
+}
|
|
|
+
|
|
|
+describe('manual web performance: complex workspace and history', () => {
|
|
|
+ let browser: Browser
|
|
|
+
|
|
|
+ beforeAll(async () => {
|
|
|
+ if (webSnapshotMode() === 'record') {
|
|
|
+ throw new Error('manual web performance runs only with deterministic replay')
|
|
|
+ }
|
|
|
+ browser = await chromium.launch()
|
|
|
+ })
|
|
|
+
|
|
|
+ afterAll(async () => {
|
|
|
+ await browser?.close()
|
|
|
+ })
|
|
|
+
|
|
|
+ it('reports workspace, history, and trajectory cardinality costs', async () => {
|
|
|
+ const world = await launchPerformanceWorld({
|
|
|
+ browser,
|
|
|
+ sidebarSessions: SIDEBAR_SESSION_COUNT,
|
|
|
+ seedLongHistory: true,
|
|
|
+ })
|
|
|
+ try {
|
|
|
+ const bootStarted = performance.now()
|
|
|
+ const group = await openPerformancePage(world, SIDEBAR_SESSION_COUNT + 1)
|
|
|
+ const bootReadyMs = performance.now() - bootStarted
|
|
|
+ const page = world.page
|
|
|
+ const cdp = await page.context().newCDPSession(page)
|
|
|
+ await cdp.send('Performance.enable')
|
|
|
+ const firstContentfulPaintMs = await page.evaluate(
|
|
|
+ () => globalThis.performance.getEntriesByName('first-contentful-paint')[0]?.startTime,
|
|
|
+ )
|
|
|
+
|
|
|
+ const sidebar = await measure(cdp, async () => {
|
|
|
+ await group.click()
|
|
|
+ return stableCount(
|
|
|
+ page.getByRole('treeitem'),
|
|
|
+ count => count === SIDEBAR_SESSION_COUNT + 2,
|
|
|
+ )
|
|
|
+ })
|
|
|
+ expect(sidebar.value).toBe(SIDEBAR_SESSION_COUNT + 2)
|
|
|
+ await group.click()
|
|
|
+ await expect.poll(() => page.getByRole('treeitem').count()).toBe(1)
|
|
|
+
|
|
|
+ const contentSearch = await measure(cdp, async () => {
|
|
|
+ await page.getByRole('textbox', { name: 'Search name, keywords...', exact: true })
|
|
|
+ .fill('LONG_PERF_SENTINEL')
|
|
|
+ const results = page.getByRole('tree', { name: 'Search results' }).getByRole('treeitem')
|
|
|
+ await expect.poll(() => results.count(), { timeout: 60_000 }).toBe(1)
|
|
|
+ await results.first().waitFor({ timeout: 60_000 })
|
|
|
+ return results.first()
|
|
|
+ })
|
|
|
+ const opened = await measure(cdp, async () => {
|
|
|
+ await contentSearch.value.click()
|
|
|
+ await page.getByRole('tab', { name: 'Trajectory', exact: true }).waitFor({ timeout: 30_000 })
|
|
|
+ return conversationTurns(page)
|
|
|
+ })
|
|
|
+ expect(opened.value).toBe(DEFAULT_HISTORY_TURNS)
|
|
|
+
|
|
|
+ const trajectoryRows = page.getByRole('row')
|
|
|
+ const coldTrajectory = await measure(cdp, async () => {
|
|
|
+ await page.getByRole('tab', { name: 'Trajectory', exact: true }).click()
|
|
|
+ return stableCount(trajectoryRows, count => count === EXPECTED_TRAJECTORY_ROWS)
|
|
|
+ })
|
|
|
+ expect(coldTrajectory.value).toBe(EXPECTED_TRAJECTORY_ROWS)
|
|
|
+
|
|
|
+ const collapseTurns = await measure(cdp, async () => {
|
|
|
+ await page.getByRole('button', { name: 'Collapse turns', exact: true }).click()
|
|
|
+ return stableCount(trajectoryRows, count => count > 0 && count < EXPECTED_TRAJECTORY_ROWS)
|
|
|
+ })
|
|
|
+ expect(collapseTurns.value).toBeLessThan(EXPECTED_TRAJECTORY_ROWS)
|
|
|
+ const trajectorySearch = await measure(cdp, async () => {
|
|
|
+ await page.getByRole('searchbox', { name: 'Search trajectory', exact: true }).fill('turn 499')
|
|
|
+ return stableCount(trajectoryRows, count => count > 0 && count < 20)
|
|
|
+ })
|
|
|
+ expect(trajectorySearch.value).toBeLessThan(20)
|
|
|
+
|
|
|
+ await page.getByRole('tab', { name: 'Chat', exact: true }).click()
|
|
|
+ const historyPages: { turns: number; measurement: Measurement }[] = []
|
|
|
+ let turns = await conversationTurns(page)
|
|
|
+ while (turns < LONG_HISTORY_TURNS) {
|
|
|
+ const previousTurns = turns
|
|
|
+ const older = await measure(cdp, async () => {
|
|
|
+ await page.getByRole('button', { name: 'Load earlier', exact: true }).click()
|
|
|
+ await expect.poll(() => conversationTurns(page), { timeout: 30_000 })
|
|
|
+ .toBeGreaterThan(previousTurns)
|
|
|
+ return conversationTurns(page)
|
|
|
+ })
|
|
|
+ turns = older.value
|
|
|
+ historyPages.push({ turns, measurement: older.measurement })
|
|
|
+ }
|
|
|
+
|
|
|
+ const warmTrajectory = await measure(cdp, async () => {
|
|
|
+ await page.getByRole('tab', { name: 'Trajectory', exact: true }).click()
|
|
|
+ return stableCount(trajectoryRows, count => count === EXPECTED_TRAJECTORY_ROWS)
|
|
|
+ })
|
|
|
+ expect(warmTrajectory.value).toBe(EXPECTED_TRAJECTORY_ROWS)
|
|
|
+ const warmConversation = await measure(cdp, async () => {
|
|
|
+ await page.getByRole('tab', { name: 'Chat', exact: true }).click()
|
|
|
+ return conversationTurns(page)
|
|
|
+ })
|
|
|
+ expect(warmConversation.value).toBe(LONG_HISTORY_TURNS)
|
|
|
+
|
|
|
+ console.info(`WEB_PERF_RESULT ${JSON.stringify({
|
|
|
+ scenario: 'workspace-history-trajectory',
|
|
|
+ fixture: {
|
|
|
+ sidebarSessions: SIDEBAR_SESSION_COUNT,
|
|
|
+ totalSessions: SIDEBAR_SESSION_COUNT + 1,
|
|
|
+ longHistoryTurns: LONG_HISTORY_TURNS,
|
|
|
+ toolCalls: EXPECTED_TOOL_CALLS,
|
|
|
+ trajectoryRows: EXPECTED_TRAJECTORY_ROWS,
|
|
|
+ },
|
|
|
+ setupMs: rounded(world.setupMs),
|
|
|
+ boot: {
|
|
|
+ readyMs: rounded(bootReadyMs),
|
|
|
+ firstContentfulPaintMs: firstContentfulPaintMs === undefined
|
|
|
+ ? null
|
|
|
+ : rounded(firstContentfulPaintMs),
|
|
|
+ },
|
|
|
+ sidebarExpand: sidebar.measurement,
|
|
|
+ contentSearch: contentSearch.measurement,
|
|
|
+ openLongHistory: { initialTurns: opened.value, ...opened.measurement },
|
|
|
+ coldTrajectory: { rows: coldTrajectory.value, ...coldTrajectory.measurement },
|
|
|
+ collapseTurns: { rows: collapseTurns.value, ...collapseTurns.measurement },
|
|
|
+ trajectorySearch: { rows: trajectorySearch.value, ...trajectorySearch.measurement },
|
|
|
+ historyPages,
|
|
|
+ warmTrajectory: { rows: warmTrajectory.value, ...warmTrajectory.measurement },
|
|
|
+ warmConversation: { turns: warmConversation.value, ...warmConversation.measurement },
|
|
|
+ }, null, 2)}`)
|
|
|
+ expect(world.tripwire.warnings).toEqual([])
|
|
|
+ expect(world.tripwire.pageErrors).toEqual([])
|
|
|
+ } finally {
|
|
|
+ await closePerformanceWorld(world)
|
|
|
+ }
|
|
|
+ })
|
|
|
+
|
|
|
+ it('reports default 24-turn history plus eight continued turns', async () => {
|
|
|
+ const world = await launchPerformanceWorld({
|
|
|
+ browser,
|
|
|
+ replay: performanceReplayOverride(COMPARISON_TURNS, comparisonTurn),
|
|
|
+ seedLongHistory: true,
|
|
|
+ })
|
|
|
+ try {
|
|
|
+ await openPerformancePage(world, 1)
|
|
|
+ const cdp = await world.page.context().newCDPSession(world.page)
|
|
|
+ await cdp.send('Performance.enable')
|
|
|
+ const opened = await measure(cdp, () => openLongHistory(world.page))
|
|
|
+ expect(opened.value).toBe(DEFAULT_HISTORY_TURNS)
|
|
|
+ const conversation = await continueConversation(world, cdp, {
|
|
|
+ startingTurns: DEFAULT_HISTORY_TURNS,
|
|
|
+ turnCount: COMPARISON_TURNS,
|
|
|
+ turnSpec: comparisonTurn,
|
|
|
+ expectedSessionId: SessionId(LONG_SESSION_ID),
|
|
|
+ })
|
|
|
+ expect(conversation.toolTurns).toBe(2)
|
|
|
+ console.info(`WEB_PERF_RESULT ${JSON.stringify({
|
|
|
+ scenario: 'default-resume-24-plus-8',
|
|
|
+ setupMs: rounded(world.setupMs),
|
|
|
+ replayContextWindow: PERF_REPLAY_CONTEXT_WINDOW,
|
|
|
+ openLongHistory: { turns: opened.value, ...opened.measurement },
|
|
|
+ conversation,
|
|
|
+ }, null, 2)}`)
|
|
|
+ expect(world.tripwire.warnings).toEqual([])
|
|
|
+ expect(world.tripwire.pageErrors).toEqual([])
|
|
|
+ } finally {
|
|
|
+ await closePerformanceWorld(world)
|
|
|
+ }
|
|
|
+ })
|
|
|
+
|
|
|
+ it('reports fully expanded 500-turn history plus eight continued turns', async () => {
|
|
|
+ const world = await launchPerformanceWorld({
|
|
|
+ browser,
|
|
|
+ replay: performanceReplayOverride(COMPARISON_TURNS, comparisonTurn),
|
|
|
+ seedLongHistory: true,
|
|
|
+ })
|
|
|
+ try {
|
|
|
+ await openPerformancePage(world, 1)
|
|
|
+ const cdp = await world.page.context().newCDPSession(world.page)
|
|
|
+ await cdp.send('Performance.enable')
|
|
|
+ expect(await openLongHistory(world.page)).toBe(DEFAULT_HISTORY_TURNS)
|
|
|
+ const historyPages: { turns: number; measurement: Measurement }[] = []
|
|
|
+ let turns = DEFAULT_HISTORY_TURNS
|
|
|
+ while (turns < LONG_HISTORY_TURNS) {
|
|
|
+ const previousTurns = turns
|
|
|
+ const older = await measure(cdp, async () => {
|
|
|
+ await world.page.getByRole('button', { name: 'Load earlier', exact: true }).click()
|
|
|
+ await expect.poll(() => conversationTurns(world.page), { timeout: 30_000 })
|
|
|
+ .toBeGreaterThan(previousTurns)
|
|
|
+ return conversationTurns(world.page)
|
|
|
+ })
|
|
|
+ turns = older.value
|
|
|
+ historyPages.push({ turns, measurement: older.measurement })
|
|
|
+ }
|
|
|
+ expect(turns).toBe(LONG_HISTORY_TURNS)
|
|
|
+ const conversation = await continueConversation(world, cdp, {
|
|
|
+ startingTurns: LONG_HISTORY_TURNS,
|
|
|
+ turnCount: COMPARISON_TURNS,
|
|
|
+ turnSpec: comparisonTurn,
|
|
|
+ expectedSessionId: SessionId(LONG_SESSION_ID),
|
|
|
+ })
|
|
|
+ expect(conversation.toolTurns).toBe(2)
|
|
|
+ console.info(`WEB_PERF_RESULT ${JSON.stringify({
|
|
|
+ scenario: 'expanded-history-500-plus-8',
|
|
|
+ setupMs: rounded(world.setupMs),
|
|
|
+ replayContextWindow: PERF_REPLAY_CONTEXT_WINDOW,
|
|
|
+ historyPages,
|
|
|
+ conversation,
|
|
|
+ }, null, 2)}`)
|
|
|
+ expect(world.tripwire.warnings).toEqual([])
|
|
|
+ expect(world.tripwire.pageErrors).toEqual([])
|
|
|
+ } finally {
|
|
|
+ await closePerformanceWorld(world)
|
|
|
+ }
|
|
|
+ })
|
|
|
+
|
|
|
+ it('reports one hundred generated turns and the next user-message paint', async () => {
|
|
|
+ const world = await launchPerformanceWorld({
|
|
|
+ browser,
|
|
|
+ replay: performanceReplayOverride(POST_SOAK_RENDER_TURN, soakTurn),
|
|
|
+ })
|
|
|
+ let testFailure: unknown
|
|
|
+ try {
|
|
|
+ await world.page.goto(world.scaffold.baseUrl, { waitUntil: 'load' })
|
|
|
+ await world.page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
|
|
|
+ await connectFreshWorkspace(world.page, world.scaffold.workspaceCwd, 'continuous-conversation-perf')
|
|
|
+ const cdp = await world.page.context().newCDPSession(world.page)
|
|
|
+ await cdp.send('Performance.enable')
|
|
|
+ const conversation = await continueConversation(world, cdp, {
|
|
|
+ startingTurns: 0,
|
|
|
+ turnCount: SOAK_TURNS,
|
|
|
+ turnSpec: soakTurn,
|
|
|
+ checkpointInterval: SOAK_CHECKPOINT_INTERVAL,
|
|
|
+ })
|
|
|
+ expect(conversation.toolTurns).toBe(SOAK_TURNS / SOAK_TOOL_INTERVAL)
|
|
|
+ const postSoakUserRender = await measurePostSoakUserRender(world, cdp)
|
|
|
+ const { turns, ...retained } = conversation
|
|
|
+ console.info(`WEB_PERF_RESULT ${JSON.stringify({
|
|
|
+ scenario: 'continuous-100-turn-soak',
|
|
|
+ setupMs: rounded(world.setupMs),
|
|
|
+ replayContextWindow: PERF_REPLAY_CONTEXT_WINDOW,
|
|
|
+ ...retained,
|
|
|
+ windows: summarizeTurnWindows(turns, SOAK_CHECKPOINT_INTERVAL),
|
|
|
+ postSoakUserRender,
|
|
|
+ }, null, 2)}`)
|
|
|
+ expect(world.tripwire.warnings).toEqual([])
|
|
|
+ expect(world.tripwire.pageErrors).toEqual([])
|
|
|
+ } catch (error) {
|
|
|
+ testFailure = error
|
|
|
+ throw error
|
|
|
+ } finally {
|
|
|
+ try {
|
|
|
+ await closePerformanceWorld(world)
|
|
|
+ } catch (cleanupError) {
|
|
|
+ if (testFailure === undefined) throw cleanupError
|
|
|
+ throw new AggregateError(
|
|
|
+ [testFailure, cleanupError],
|
|
|
+ 'continuous conversation performance test and teardown failed',
|
|
|
+ )
|
|
|
+ }
|
|
|
+ }
|
|
|
+ })
|
|
|
+})
|
Wenlu Wang