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Tighten OpenCode terminal latency budgets (#4796) 

Tighten OpenCode terminal latency budgets and harden the artificial OpenCode prompt-script harness.
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Neil 2026-06-07 08:28:15 -07:00 committed by GitHub
parent 1defc2d1dd
commit be4dc76b8a
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1 changed files with 18 additions and 8 deletions
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26
tests/e2e/artificial-opencode-terminal-load.spec.ts
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@ -1,6 +1,6 @@
import type { Page, TestInfo } from '@stablyai/playwright-test'
import { randomUUID } from 'node:crypto'
import { rmSync, writeFileSync } from 'node:fs'
import { mkdirSync, rmSync, writeFileSync } from 'node:fs'
import path from 'node:path'
import { test, expect } from './helpers/orca-app'
import {
@ -71,9 +71,12 @@ const DEFAULT_CROSS_WORKSPACE_PANES_PER_WORKTREE = 3
const DEFAULT_FRAME_COUNT = 180
const DEFAULT_FRAME_INTERVAL_MS = 6
const TIMER_SAMPLE_MS = 16
const MAX_MEDIAN_KEY_LATENCY_MS = 300
const MAX_WORST_KEY_LATENCY_MS = 1_200
const MAX_TIMER_DRIFT_MS = 300
// Why: these are regression budgets, not observed baselines. Repeated local
// 100-pane OpenCode-scale runs are below 50ms worst-key latency; keep enough
// CI headroom while still failing changes that make typing visibly sluggish.
const MAX_MEDIAN_KEY_LATENCY_MS = 75
const MAX_WORST_KEY_LATENCY_MS = 300
const MAX_TIMER_DRIFT_MS = 150
function readPositiveInt(name: string, fallback: number): number {
const raw = process.env[name]
@ -137,6 +140,13 @@ process.stdin.on('data', (chunk) => {
`
}
function writeInteractivePromptScript(scriptPath: string, runId: string): void {
// Why: long scale runs can outlive temporary repo cleanup races in the test
// harness; the prompt script only needs a writable directory, not git state.
mkdirSync(path.dirname(scriptPath), { recursive: true })
writeFileSync(scriptPath, interactivePromptScript(runId))
}
async function focusActiveTerminalInput(page: Page): Promise<void> {
await page.evaluate(() => {
const store = window.__store
@ -403,7 +413,7 @@ async function measureCrossWorkspaceTypingDuringHiddenLoad({
const runId = randomUUID()
const scriptPath = path.join(testRepoPath, `.orca-opencode-cross-${hiddenPaneCount}-${runId}.mjs`)
writeFileSync(scriptPath, interactivePromptScript(runId))
writeInteractivePromptScript(scriptPath, runId)
await resetTerminalPtyOutputDebug(orcaPage)
const load = await startSyntheticOpenCodeInjection(
orcaPage,
@ -448,7 +458,7 @@ test.describe('Artificial OpenCode terminal load', () => {
const runId = randomUUID()
const scriptPath = path.join(testRepoPath, `.orca-opencode-baseline-typing-${runId}.mjs`)
writeFileSync(scriptPath, interactivePromptScript(runId))
writeInteractivePromptScript(scriptPath, runId)
await resetTerminalPtyOutputDebug(orcaPage)
try {
const measurement = await measureTypingDuringLoad(orcaPage, scriptPath, typingPtyId, runId)
@ -483,7 +493,7 @@ test.describe('Artificial OpenCode terminal load', () => {
const runId = randomUUID()
const scriptPath = path.join(testRepoPath, `.orca-opencode-typing-${runId}.mjs`)
writeFileSync(scriptPath, interactivePromptScript(runId))
writeInteractivePromptScript(scriptPath, runId)
await resetTerminalPtyOutputDebug(orcaPage)
const load = await startSyntheticOpenCodeInjection(
orcaPage,
@ -527,7 +537,7 @@ test.describe('Artificial OpenCode terminal load', () => {
const runId = randomUUID()
const scriptPath = path.join(testRepoPath, `.orca-opencode-scale-${paneCount}-${runId}.mjs`)
writeFileSync(scriptPath, interactivePromptScript(runId))
writeInteractivePromptScript(scriptPath, runId)
await resetTerminalPtyOutputDebug(orcaPage)
const load = await startSyntheticOpenCodeInjection(
orcaPage,