ci(benchmarks): Add benchmark CI isolation flags and document runner adoption gate by Copilot · Pull Request #42164 · MetaMask/metamask-extension

Copilot · 2026-04-27T14:30:58Z

Description

Power-user startup benchmarks remain noisier than standard startup on the same code path after addressing heap debt (#42163), render-completion races (#42162), and network mock gaps (#42161). The remaining variance sources are GPU/compositor scheduling and Chrome background-throttling behavior, both of which are controllable via launch flags at low risk.

This PR applies the browser isolation controls scoped to CI/Codespaces environments and explicitly defers any larger-runner rollout behind a measurable gate.

Chrome benchmark isolation (test/e2e/webdriver/chrome.js)

Adds the following flags when CI || CODESPACES, leaving local interactive runs unchanged:

--disable-gpu — removes GPU scheduling jitter from compositor timing
--disable-renderer-backgrounding — prevents the renderer process from being throttled when the window is not foregrounded
--disable-backgrounding-occluded-windows — prevents throttling due to window occlusion
--disable-background-timer-throttling — prevents setTimeout/setInterval from being clamped to 1 Hz in background contexts

if (process.env.CI || process.env.CODESPACES) {
  args.push(
    '--disable-gpu',
    '--disable-renderer-backgrounding',
    '--disable-backgrounding-occluded-windows',
    '--disable-background-timer-throttling',
  );
}

Targeted regression coverage (test/e2e/benchmarks/chrome-driver.test.ts)

Asserts that all four isolation flags are present in ChromeDriver.build output when CI=true and absent when CI is unset.

Runner adoption decision documented, not prematurely adopted (.github/workflows/run-benchmarks.yml)

benchmarks and benchmarks-page-load remain on ubuntu-latest. Inline workflow comments record the adoption gate: a 15-run startupPowerUserHome trial must demonstrate ≥2pp CV improvement over ubuntu-latest before switching to an 8-core runner. GitHub Actions cost delta and current image/Chrome pin strategy are documented in docs/quality-gates/benchmark-ci-constraints.md.

Changelog

CHANGELOG entry: null

Related issues

Fixes:

Manual testing steps

Run the benchmark suite in CI and confirm the four isolation flags appear in Chrome launch args (check the Selenium session log).
Run the benchmark suite locally and confirm the flags are absent (interactive behavior unchanged).
Confirm unit tests pass: yarn jest test/e2e/benchmarks/chrome-driver.test.ts

Screenshots/Recordings

Before

N/A — CI-only change.

After

N/A — CI-only change.

Pre-merge author checklist

I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
I've completed the PR template to the best of my ability
I've included tests if applicable
I've documented my code using JSDoc format if applicable
I've applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

Agent-Logs-Url: https://github.com/MetaMask/metamask-extension/sessions/f6962b91-3f48-45ea-9ca8-3d3859439aad Co-authored-by: MajorLift <34228073+MajorLift@users.noreply.github.com>

metamaskbotv2 · 2026-04-27T15:01:21Z

Builds ready [10839f0] [reused from 3c0306f]

⚠️ Make sure the build is safe before downloading and running this build.
- Please do not use these builds with accounts that contain significant real money.
- Beware the security risks of cache poisoning.
builds: chrome, firefox
builds (beta): chrome, firefox
builds (flask): chrome, firefox
builds (test): chrome, firefox
builds (test-flask): chrome, firefox
webpack builds: chrome, firefox
webpack builds (beta): chrome, firefox
webpack builds (flask): chrome, firefox
webpack builds (test): chrome, firefox
webpack builds (test-flask): chrome, firefox
bundle size: Bundle Size Stats
bundle analyzer: Bundle Analyzer
interaction-benchmark: Interaction Stats
storybook: Storybook
typescript migration: Dashboard
all artifacts

⚡ Performance Benchmarks (Total: 🟢 6 pass · 🟡 9 warn · 🔴 0 fail)

Baseline (latest main): 71bd826 | Date: 10/14/58243 | Pipeline: 25002535296 | Baseline logs

Interaction Benchmarks · Samples: 5

Benchmark chrome-browserify
loadNewAccount 🟡 [Show logs]
confirmTx 🟡 [Show logs]
bridgeUserActions 🟡 [Show logs]

📈 Results compared to the previous 5 runs on main
↓ loadNewAccount/load_new_account: -55%
↓ loadNewAccount/total: -55%
↓ bridgeUserActions/bridge_load_page: -16%
↓ bridgeUserActions/bridge_load_asset_picker: -33%
↓ bridgeUserActions/bridge_search_token: -24%
↓ bridgeUserActions/total: -28%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 loadNewAccount/FCP: p75 2.5s
🟡 confirmTx/FCP: p75 2.5s
🟡 bridgeUserActions/FCP: p75 2.5s

Startup Benchmarks · Samples: 100

Benchmark chrome-browserify chrome-webpack firefox-browserify firefox-webpack
startupStandardHome 🟢 [Show logs] 🟢 [Show logs] 🟢 [Show logs] 🟢 [Show logs]

📈 Results compared to the previous 5 runs on main
↓ startupStandardHome/uiStartup: -22%
↓ startupStandardHome/load: -11%
↓ startupStandardHome/domContentLoaded: -13%
↑ startupStandardHome/backgroundConnect: +13%
↓ startupStandardHome/firstReactRender: -21%
↓ startupStandardHome/initialActions: -33%
↓ startupStandardHome/loadScripts: -16%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -20%
↓ startupStandardHome/load: -15%
↓ startupStandardHome/domContentLoaded: -14%
↓ startupStandardHome/backgroundConnect: -37%
↓ startupStandardHome/firstReactRender: -30%
↓ startupStandardHome/loadScripts: -14%
↓ startupStandardHome/setupStore: -13%
↓ startupStandardHome/numNetworkReqs: -44%
↓ startupStandardHome/domInteractive: -29%
↑ startupStandardHome/backgroundConnect: +17%
↑ startupStandardHome/initialActions: +33%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -20%
↓ startupStandardHome/load: -11%
↓ startupStandardHome/domContentLoaded: -11%
↓ startupStandardHome/domInteractive: -60%
↓ startupStandardHome/backgroundConnect: -11%
↓ startupStandardHome/initialActions: -43%
↓ startupStandardHome/loadScripts: -11%
↓ startupStandardHome/setupStore: -67%
↓ startupStandardHome/numNetworkReqs: -37%

User Journey Benchmarks · Samples: 5 · mock API

Benchmark chrome-browserify
onboardingImportWallet 🟡 [Show logs]
onboardingNewWallet 🟡 [Show logs]
assetDetails 🟡 [Show logs]
solanaAssetDetails 🟡 [Show logs]
importSrpHome 🟡 [Show logs] · 🟡 homeAfterImportWithNewWallet · 🟡 cls
sendTransactions 🟢 [Show logs]
swap 🟡 [Show logs]

📈 Results compared to the previous 5 runs on main
↓ onboardingImportWallet/srpButtonToSrpForm: -85%
↓ onboardingImportWallet/metricsToWalletReadyScreen: -47%
↓ onboardingImportWallet/openAccountMenuToAccountListLoaded: -98%
↓ onboardingImportWallet/total: -17%
↓ onboardingNewWallet/srpButtonToPwForm: -76%
↓ onboardingNewWallet/skipBackupToMetricsScreen: -66%
↑ onboardingNewWallet/agreeButtonToOnboardingSuccess: +25%
↓ onboardingNewWallet/doneButtonToAssetList: -27%
↓ onboardingNewWallet/total: -28%
↓ assetDetails/assetClickToPriceChart: -83%
↓ assetDetails/total: -83%
↓ solanaAssetDetails/assetClickToPriceChart: -76%
↓ solanaAssetDetails/total: -76%
↓ importSrpHome/openAccountMenuAfterLogin: -62%
↑ importSrpHome/homeAfterImportWithNewWallet: +77%
↑ importSrpHome/total: +68%
↓ swap/openSwapPageFromHome: -95%
↓ swap/fetchAndDisplaySwapQuotes: -58%
↓ swap/total: -63%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 onboardingImportWallet/FCP: p75 2.0s
🟡 onboardingNewWallet/FCP: p75 2.0s
🟡 assetDetails/INP: p75 464ms
🟡 assetDetails/FCP: p75 2.6s
🟡 solanaAssetDetails/FCP: p75 2.6s
🟡 importSrpHome/INP: p75 256ms
🟡 importSrpHome/FCP: p75 2.4s
🟡 importSrpHome/CLS: p75 0.166
🟡 swap/FCP: p75 2.6s

Dapp Page Load Benchmarks · Samples: 100

Benchmark chrome-browserify
dappPageLoad 🟢 [Show logs]

Bundle size diffs

background: 0 Bytes (0%)
ui: 0 Bytes (0%)
common: 0 Bytes (0%)

github-actions · 2026-04-27T16:10:09Z

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

metamaskbotv2 · 2026-04-27T16:34:15Z

Builds ready [4e25deb]

⚠️ Make sure the build is safe before downloading and running this build.
- Please do not use these builds with accounts that contain significant real money.
- Beware the security risks of cache poisoning.
builds: chrome, firefox
builds (beta): chrome, firefox
builds (flask): chrome, firefox
builds (test): chrome, firefox
builds (test-flask): chrome, firefox
webpack builds: chrome, firefox
webpack builds (beta): chrome, firefox
webpack builds (flask): chrome, firefox
webpack builds (test): chrome, firefox
webpack builds (test-flask): chrome, firefox
bundle size: Bundle Size Stats
bundle analyzer: Bundle Analyzer
interaction-benchmark: Interaction Stats
storybook: Storybook
typescript migration: Dashboard
all artifacts

⚡ Performance Benchmarks (Total: 🟢 7 pass · 🟡 8 warn · 🔴 0 fail)

Baseline (latest main): 71bd826 | Date: 10/14/58243 | Pipeline: 25006257344 | Baseline logs

Interaction Benchmarks · Samples: 5

Benchmark chrome-browserify
loadNewAccount 🟡 [Show logs]
confirmTx 🟡 [Show logs]
bridgeUserActions 🟡 [Show logs]

📈 Results compared to the previous 5 runs on main
↓ loadNewAccount/load_new_account: -76%
↓ loadNewAccount/total: -76%
↓ bridgeUserActions/bridge_load_page: -40%
↓ bridgeUserActions/bridge_load_asset_picker: -56%
↓ bridgeUserActions/bridge_search_token: -27%
↓ bridgeUserActions/total: -36%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 loadNewAccount/FCP: p75 2.1s
🟡 confirmTx/FCP: p75 2.1s
🟡 bridgeUserActions/FCP: p75 2.0s

Startup Benchmarks · Samples: 100

Benchmark chrome-browserify chrome-webpack firefox-browserify firefox-webpack
startupStandardHome 🟢 [Show logs] 🟢 [Show logs] 🟢 [Show logs] 🟢 [Show logs]

📈 Results compared to the previous 5 runs on main
↓ startupStandardHome/uiStartup: -40%
↓ startupStandardHome/load: -31%
↓ startupStandardHome/domContentLoaded: -33%
↓ startupStandardHome/domInteractive: -21%
↓ startupStandardHome/firstPaint: -16%
↓ startupStandardHome/backgroundConnect: -11%
↓ startupStandardHome/firstReactRender: -40%
↓ startupStandardHome/initialActions: -33%
↓ startupStandardHome/loadScripts: -36%
↓ startupStandardHome/setupStore: -24%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -24%
↓ startupStandardHome/load: -19%
↓ startupStandardHome/domContentLoaded: -19%
↑ startupStandardHome/firstPaint: +17%
↓ startupStandardHome/backgroundConnect: -42%
↓ startupStandardHome/firstReactRender: -27%
↓ startupStandardHome/loadScripts: -19%
↓ startupStandardHome/setupStore: -13%
↓ startupStandardHome/numNetworkReqs: -44%
↓ startupStandardHome/uiStartup: -15%
↓ startupStandardHome/domInteractive: -65%
↓ startupStandardHome/initialActions: -33%
↓ startupStandardHome/setupStore: -25%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -15%
↓ startupStandardHome/domInteractive: -69%
↓ startupStandardHome/initialActions: -43%
↓ startupStandardHome/setupStore: -64%
↓ startupStandardHome/numNetworkReqs: -37%

User Journey Benchmarks · Samples: 5 · mock API

Benchmark chrome-browserify
onboardingImportWallet 🟢 [Show logs]
onboardingNewWallet 🟢 [Show logs]
assetDetails 🟡 [Show logs]
solanaAssetDetails 🟡 [Show logs]
importSrpHome 🟡 [Show logs]
sendTransactions 🟡 [Show logs]
swap 🟡 [Show logs]

📈 Results compared to the previous 5 runs on main
↓ onboardingImportWallet/srpButtonToSrpForm: -84%
↓ onboardingImportWallet/metricsToWalletReadyScreen: -35%
↓ onboardingImportWallet/doneButtonToHomeScreen: -72%
↑ onboardingImportWallet/openAccountMenuToAccountListLoaded: +18%
↓ onboardingImportWallet/total: -42%
↓ onboardingNewWallet/srpButtonToPwForm: -78%
↓ onboardingNewWallet/skipBackupToMetricsScreen: -68%
↓ onboardingNewWallet/doneButtonToAssetList: -36%
↓ onboardingNewWallet/total: -35%
↓ assetDetails/assetClickToPriceChart: -77%
↓ assetDetails/total: -77%
↓ solanaAssetDetails/assetClickToPriceChart: -70%
↓ solanaAssetDetails/total: -70%
↓ importSrpHome/loginToHomeScreen: -11%
↓ importSrpHome/openAccountMenuAfterLogin: -71%
↓ importSrpHome/homeAfterImportWithNewWallet: -67%
↓ importSrpHome/total: -61%
↓ sendTransactions/openSendPageFromHome: -12%
↑ sendTransactions/reviewTransactionToConfirmationPage: +35%
↑ sendTransactions/total: +33%
↓ swap/openSwapPageFromHome: -96%
↑ swap/fetchAndDisplaySwapQuotes: +31%
↑ swap/total: +11%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 assetDetails/FCP: p75 2.5s
🟡 solanaAssetDetails/FCP: p75 2.5s
🟡 importSrpHome/FCP: p75 2.4s
🟡 sendTransactions/INP: p75 208ms
🟡 sendTransactions/FCP: p75 2.5s
🟡 swap/FCP: p75 2.5s

Dapp Page Load Benchmarks · Samples: 100

Benchmark chrome-browserify
dappPageLoad 🟢 [Show logs]

📈 Results compared to the previous 5 runs on main
↓ dappPageLoad/pageLoadTime: -22%
↓ dappPageLoad/domContentLoaded: -23%
↓ dappPageLoad/firstPaint: -18%
↓ dappPageLoad/firstContentfulPaint: -18%

Bundle size diffs

background: 58 Bytes (0%)
ui: 342 Bytes (0%)
common: 432 Bytes (0%)

…me-driver.test.ts`

metamaskbotv2 · 2026-04-27T18:21:32Z

Builds ready [10d4770]

⚠️ Make sure the build is safe before downloading and running this build.
- Please do not use these builds with accounts that contain significant real money.
- Beware the security risks of cache poisoning.
builds: chrome, firefox
builds (beta): chrome, firefox
builds (flask): chrome, firefox
builds (test): chrome, firefox
builds (test-flask): chrome, firefox
webpack builds: chrome, firefox
webpack builds (beta): chrome, firefox
webpack builds (flask): chrome, firefox
webpack builds (test): chrome, firefox
webpack builds (test-flask): chrome, firefox
bundle size: Bundle Size Stats
bundle analyzer: Bundle Analyzer
interaction-benchmark: Interaction Stats
storybook: Storybook
typescript migration: Dashboard
all artifacts

⚡ Performance Benchmarks (Total: 🟢 6 pass · 🟡 8 warn · 🔴 0 fail)

Baseline (latest main): 71bd826 | Date: 10/14/58243 | Pipeline: 25011254056 | Baseline logs

Interaction Benchmarks · Samples: 5

Benchmark chrome-browserify
loadNewAccount
[Sentry log · main/release] 🟡 [CI log]
confirmTx
[Sentry log · main/release] 🟡 [CI log]
bridgeUserActions
[Sentry log · main/release] 🟡 [CI log]

📈 Results compared to the previous 5 runs on main
↓ loadNewAccount/load_new_account: -76%
↓ loadNewAccount/total: -76%
↓ bridgeUserActions/bridge_load_page: -17%
↓ bridgeUserActions/bridge_load_asset_picker: -35%
↓ bridgeUserActions/bridge_search_token: -28%
↓ bridgeUserActions/total: -28%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 loadNewAccount/FCP: p75 2.5s
🟡 confirmTx/FCP: p75 2.5s
🟡 bridgeUserActions/FCP: p75 2.5s

Startup Benchmarks · Samples: 100

Benchmark chrome-browserify chrome-webpack firefox-browserify firefox-webpack
startupStandardHome
[Sentry log · main/release] 🟢 [CI log] 🟢 [CI log] 🟢 [CI log] 🟢 [CI log]

📈 Results compared to the previous 5 runs on main
↓ startupStandardHome/uiStartup: -17%
↑ startupStandardHome/domInteractive: +24%
↑ startupStandardHome/firstPaint: +11%
↑ startupStandardHome/backgroundConnect: +23%
↓ startupStandardHome/initialActions: -33%
↓ startupStandardHome/loadScripts: -11%
↑ startupStandardHome/setupStore: +14%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -22%
↓ startupStandardHome/load: -17%
↓ startupStandardHome/domContentLoaded: -16%
↓ startupStandardHome/backgroundConnect: -37%
↓ startupStandardHome/firstReactRender: -27%
↓ startupStandardHome/loadScripts: -17%
↓ startupStandardHome/setupStore: -20%
↓ startupStandardHome/numNetworkReqs: -44%
↓ startupStandardHome/uiStartup: -16%
↓ startupStandardHome/domInteractive: -64%
↓ startupStandardHome/initialActions: -33%
↓ startupStandardHome/setupStore: -25%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -10%
↓ startupStandardHome/domInteractive: -37%
↑ startupStandardHome/initialActions: +14%
↓ startupStandardHome/setupStore: -60%
↓ startupStandardHome/numNetworkReqs: -37%

User Journey Benchmarks · Samples: 5 · mock API

Benchmark chrome-browserify
onboardingImportWallet
[Sentry log · main/release] 🟢 [CI log]
onboardingNewWallet
[Sentry log · main/release] 🟢 [CI log]
assetDetails
[Sentry log · main/release] 🟡 [CI log]
solanaAssetDetails
[Sentry log · main/release] 🟡 [CI log]
importSrpHome
[Sentry log · main/release] 🟡 [CI log]
sendTransactions
[Sentry log · main/release] 🟡 [CI log]
swap
[Sentry log · main/release] 🟡 [CI log]

📈 Results compared to the previous 5 runs on main
↓ onboardingImportWallet/srpButtonToSrpForm: -85%
↓ onboardingImportWallet/metricsToWalletReadyScreen: -30%
↓ onboardingImportWallet/doneButtonToHomeScreen: -76%
↑ onboardingImportWallet/openAccountMenuToAccountListLoaded: +36%
↓ onboardingImportWallet/total: -42%
↓ onboardingNewWallet/srpButtonToPwForm: -79%
↓ onboardingNewWallet/skipBackupToMetricsScreen: -66%
↓ onboardingNewWallet/doneButtonToAssetList: -36%
↓ onboardingNewWallet/total: -35%
↓ assetDetails/assetClickToPriceChart: -44%
↓ assetDetails/total: -44%
↓ solanaAssetDetails/assetClickToPriceChart: -69%
↓ solanaAssetDetails/total: -69%
↓ importSrpHome/openAccountMenuAfterLogin: -67%
↓ importSrpHome/homeAfterImportWithNewWallet: -66%
↓ importSrpHome/total: -58%
↓ sendTransactions/openSendPageFromHome: -24%
↓ sendTransactions/selectTokenToSendFormLoaded: -30%
↑ sendTransactions/reviewTransactionToConfirmationPage: +36%
↑ sendTransactions/total: +33%
↓ swap/openSwapPageFromHome: -96%
↑ swap/fetchAndDisplaySwapQuotes: +32%
↑ swap/total: +11%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 assetDetails/FCP: p75 2.6s
🟡 solanaAssetDetails/FCP: p75 2.6s
🟡 importSrpHome/FCP: p75 2.6s
🟡 sendTransactions/INP: p75 216ms
🟡 sendTransactions/FCP: p75 2.5s
🟡 swap/FCP: p75 2.5s

Dapp Page Load Benchmarks · Samples: 100

⚠️ Missing data: chrome/browserify/pageLoadBenchmark

✅ No regressions detected

Bundle size diffs [🚨 Warning! Bundle size has increased!]

background: 58 Bytes (0%)
ui: 342 Bytes (0%)
common: 811 Bytes (0.01%)

…use \`Awaited<typeof import(...)>\`

metamaskbotv2 · 2026-04-27T18:49:38Z

Builds ready [201352a]

⚠️ Make sure the build is safe before downloading and running this build.
- Please do not use these builds with accounts that contain significant real money.
- Beware the security risks of cache poisoning.
builds: chrome, firefox
builds (beta): chrome, firefox
builds (flask): chrome, firefox
builds (test): chrome, firefox
builds (test-flask): chrome, firefox
webpack builds: chrome, firefox
webpack builds (beta): chrome, firefox
webpack builds (flask): chrome, firefox
webpack builds (test): chrome, firefox
webpack builds (test-flask): chrome, firefox
bundle size: Bundle Size Stats
bundle analyzer: Bundle Analyzer
interaction-benchmark: Interaction Stats
storybook: Storybook
typescript migration: Dashboard
all artifacts

⚡ Performance Benchmarks (Total: 🟢 7 pass · 🟡 8 warn · 🔴 0 fail)

Baseline (latest main): 71bd826 | Date: 10/14/58243 | Pipeline: 25012487627 | Baseline logs

Interaction Benchmarks · Samples: 5

Benchmark chrome-browserify
loadNewAccount
[Sentry log · main/release] 🟡 [CI log]
confirmTx
[Sentry log · main/release] 🟡 [CI log]
bridgeUserActions
[Sentry log · main/release] 🟡 [CI log]

📈 Results compared to the previous 5 runs on main
↓ loadNewAccount/load_new_account: -58%
↓ loadNewAccount/total: -58%
↓ bridgeUserActions/bridge_load_page: -22%
↓ bridgeUserActions/bridge_load_asset_picker: -32%
↓ bridgeUserActions/bridge_search_token: -29%
↓ bridgeUserActions/total: -29%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 loadNewAccount/FCP: p75 2.8s
🟡 confirmTx/FCP: p75 2.5s
🟡 bridgeUserActions/FCP: p75 2.5s

Startup Benchmarks · Samples: 100

Benchmark chrome-browserify chrome-webpack firefox-browserify firefox-webpack
startupStandardHome
[Sentry log · main/release] 🟢 [CI log] 🟢 [CI log] 🟢 [CI log] 🟢 [CI log]

📈 Results compared to the previous 5 runs on main
↓ startupStandardHome/uiStartup: -25%
↓ startupStandardHome/load: -14%
↓ startupStandardHome/domContentLoaded: -16%
↑ startupStandardHome/backgroundConnect: +12%
↓ startupStandardHome/firstReactRender: -14%
↓ startupStandardHome/initialActions: -33%
↓ startupStandardHome/loadScripts: -20%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -25%
↓ startupStandardHome/load: -21%
↓ startupStandardHome/domContentLoaded: -20%
↓ startupStandardHome/domInteractive: -10%
↓ startupStandardHome/firstPaint: -18%
↓ startupStandardHome/backgroundConnect: -42%
↓ startupStandardHome/firstReactRender: -27%
↓ startupStandardHome/loadScripts: -21%
↓ startupStandardHome/setupStore: -20%
↓ startupStandardHome/numNetworkReqs: -44%
↓ startupStandardHome/uiStartup: -13%
↓ startupStandardHome/domInteractive: -63%
↓ startupStandardHome/initialActions: -33%
↓ startupStandardHome/setupStore: -17%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -12%
↓ startupStandardHome/domInteractive: -41%
↑ startupStandardHome/initialActions: +14%
↓ startupStandardHome/setupStore: -60%
↓ startupStandardHome/numNetworkReqs: -37%

User Journey Benchmarks · Samples: 5 · mock API

Benchmark chrome-browserify
onboardingImportWallet
[Sentry log · main/release] 🟢 [CI log]
onboardingNewWallet
[Sentry log · main/release] 🟢 [CI log]
assetDetails
[Sentry log · main/release] 🟡 [CI log]
solanaAssetDetails
[Sentry log · main/release] 🟡 [CI log]
importSrpHome
[Sentry log · main/release] 🟡 [CI log]
sendTransactions
[Sentry log · main/release] 🟡 [CI log]
swap
[Sentry log · main/release] 🟡 [CI log]

📈 Results compared to the previous 5 runs on main
↓ onboardingImportWallet/srpButtonToSrpForm: -84%
↓ onboardingImportWallet/metricsToWalletReadyScreen: -33%
↓ onboardingImportWallet/doneButtonToHomeScreen: -75%
↑ onboardingImportWallet/openAccountMenuToAccountListLoaded: +26%
↓ onboardingImportWallet/total: -43%
↓ onboardingNewWallet/srpButtonToPwForm: -79%
↓ onboardingNewWallet/skipBackupToMetricsScreen: -65%
↓ onboardingNewWallet/doneButtonToAssetList: -30%
↓ onboardingNewWallet/total: -31%
↓ assetDetails/assetClickToPriceChart: -42%
↓ assetDetails/total: -42%
↓ solanaAssetDetails/assetClickToPriceChart: -70%
↓ solanaAssetDetails/total: -70%
↓ importSrpHome/loginToHomeScreen: -20%
↓ importSrpHome/openAccountMenuAfterLogin: -79%
↓ importSrpHome/homeAfterImportWithNewWallet: -68%
↓ importSrpHome/total: -62%
↓ sendTransactions/selectTokenToSendFormLoaded: -14%
↑ sendTransactions/reviewTransactionToConfirmationPage: +35%
↑ sendTransactions/total: +31%
↓ swap/openSwapPageFromHome: -97%
↑ swap/fetchAndDisplaySwapQuotes: +32%
↑ swap/total: +11%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 assetDetails/FCP: p75 2.5s
🟡 solanaAssetDetails/FCP: p75 2.5s
🟡 importSrpHome/FCP: p75 2.5s
🟡 sendTransactions/FCP: p75 2.5s
🟡 swap/FCP: p75 2.6s

Dapp Page Load Benchmarks · Samples: 100

Benchmark chrome-browserify
dappPageLoad
[Sentry log · main/release] 🟢 [CI log]

Bundle size diffs [🚨 Warning! Bundle size has increased!]

background: 58 Bytes (0%)
ui: 342 Bytes (0%)
common: 811 Bytes (0.01%)

…ional

sonarqubecloud · 2026-04-27T19:15:13Z

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

metamaskbotv2 · 2026-04-27T19:24:23Z

Builds ready [7b99e7e]

⚠️ Make sure the build is safe before downloading and running this build.
- Please do not use these builds with accounts that contain significant real money.
- Beware the security risks of cache poisoning.
builds: chrome, firefox
builds (beta): chrome, firefox
builds (flask): chrome, firefox
builds (test): chrome, firefox
builds (test-flask): chrome, firefox
webpack builds: chrome, firefox
webpack builds (beta): chrome, firefox
webpack builds (flask): chrome, firefox
webpack builds (test): chrome, firefox
webpack builds (test-flask): chrome, firefox
bundle size: Bundle Size Stats
bundle analyzer: Bundle Analyzer
interaction-benchmark: Interaction Stats
storybook: Storybook
typescript migration: Dashboard
all artifacts

⚡ Performance Benchmarks (Total: 🟢 7 pass · 🟡 8 warn · 🔴 0 fail)

Baseline (latest main): 71bd826 | Date: 10/14/58243 | Pipeline: 25013988726 | Baseline logs

Interaction Benchmarks · Samples: 5

Benchmark chrome-browserify
loadNewAccount
[Sentry log · main/release] 🟡 [CI log]
confirmTx
[Sentry log · main/release] 🟡 [CI log]
bridgeUserActions
[Sentry log · main/release] 🟡 [CI log]

📈 Results compared to the previous 5 runs on main
↓ loadNewAccount/load_new_account: -76%
↓ loadNewAccount/total: -76%
↓ bridgeUserActions/bridge_load_page: -12%
↓ bridgeUserActions/bridge_load_asset_picker: -35%
↓ bridgeUserActions/bridge_search_token: -28%
↓ bridgeUserActions/total: -23%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 loadNewAccount/FCP: p75 2.6s
🟡 confirmTx/FCP: p75 2.6s
🟡 bridgeUserActions/FCP: p75 2.5s

Startup Benchmarks · Samples: 100

Benchmark chrome-browserify chrome-webpack firefox-browserify firefox-webpack
startupStandardHome
[Sentry log · main/release] 🟢 [CI log] 🟢 [CI log] 🟢 [CI log] 🟢 [CI log]

📈 Results compared to the previous 5 runs on main
↓ startupStandardHome/uiStartup: -21%
↓ startupStandardHome/load: -10%
↓ startupStandardHome/domContentLoaded: -12%
↑ startupStandardHome/domInteractive: +15%
↑ startupStandardHome/backgroundConnect: +16%
↓ startupStandardHome/initialActions: -33%
↓ startupStandardHome/loadScripts: -16%
↑ startupStandardHome/setupStore: +21%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -18%
↓ startupStandardHome/load: -13%
↓ startupStandardHome/domContentLoaded: -12%
↓ startupStandardHome/backgroundConnect: -36%
↓ startupStandardHome/firstReactRender: -19%
↓ startupStandardHome/loadScripts: -12%
↓ startupStandardHome/setupStore: -13%
↓ startupStandardHome/numNetworkReqs: -44%
↓ startupStandardHome/uiStartup: -12%
↓ startupStandardHome/domInteractive: -63%
↑ startupStandardHome/backgroundConnect: +13%
↑ startupStandardHome/initialActions: +33%
↓ startupStandardHome/setupStore: -17%
↓ startupStandardHome/numNetworkReqs: -37%
↓ startupStandardHome/uiStartup: -16%
↓ startupStandardHome/domInteractive: -41%
↑ startupStandardHome/initialActions: +14%
↓ startupStandardHome/setupStore: -60%
↓ startupStandardHome/numNetworkReqs: -37%

User Journey Benchmarks · Samples: 5 · mock API

Benchmark chrome-browserify
onboardingImportWallet
[Sentry log · main/release] 🟢 [CI log]
onboardingNewWallet
[Sentry log · main/release] 🟢 [CI log]
assetDetails
[Sentry log · main/release] 🟡 [CI log]
solanaAssetDetails
[Sentry log · main/release] 🟡 [CI log]
importSrpHome
[Sentry log · main/release] 🟡 [CI log]
sendTransactions
[Sentry log · main/release] 🟡 [CI log]
swap
[Sentry log · main/release] 🟡 [CI log]

📈 Results compared to the previous 5 runs on main
↓ onboardingImportWallet/srpButtonToSrpForm: -85%
↓ onboardingImportWallet/metricsToWalletReadyScreen: -35%
↓ onboardingImportWallet/doneButtonToHomeScreen: -77%
↑ onboardingImportWallet/openAccountMenuToAccountListLoaded: +26%
↓ onboardingImportWallet/total: -44%
↓ onboardingNewWallet/srpButtonToPwForm: -78%
↓ onboardingNewWallet/skipBackupToMetricsScreen: -67%
↓ onboardingNewWallet/doneButtonToAssetList: -23%
↓ onboardingNewWallet/total: -25%
↓ assetDetails/assetClickToPriceChart: -54%
↓ assetDetails/total: -54%
↓ solanaAssetDetails/assetClickToPriceChart: -68%
↓ solanaAssetDetails/total: -68%
↓ importSrpHome/loginToHomeScreen: -13%
↓ importSrpHome/openAccountMenuAfterLogin: -70%
↓ importSrpHome/homeAfterImportWithNewWallet: -69%
↓ importSrpHome/total: -61%
↓ sendTransactions/openSendPageFromHome: -19%
↓ sendTransactions/selectTokenToSendFormLoaded: -14%
↑ sendTransactions/reviewTransactionToConfirmationPage: +38%
↑ sendTransactions/total: +36%
↓ swap/openSwapPageFromHome: -96%
↑ swap/fetchAndDisplaySwapQuotes: +32%
↑ swap/total: +12%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)
🟡 assetDetails/FCP: p75 2.5s
🟡 solanaAssetDetails/FCP: p75 2.5s
🟡 importSrpHome/FCP: p75 2.5s
🟡 sendTransactions/INP: p75 240ms
🟡 sendTransactions/FCP: p75 2.7s
🟡 sendTransactions/LCP: p75 2.7s
🟡 swap/FCP: p75 2.7s

Dapp Page Load Benchmarks · Samples: 100

Benchmark chrome-browserify
dappPageLoad
[Sentry log · main/release] 🟢 [CI log]

Bundle size diffs [🚨 Warning! Bundle size has increased!]

background: 379 Bytes (0.01%)
ui: -1.57 KiB (-0.02%)
common: 3.92 KiB (0.03%)

Initial plan

5071f30

Copilot AI assigned Copilot and MajorLift Apr 27, 2026

Copilot started work on behalf of MajorLift April 27, 2026 14:31 View session

chore: add benchmark CI isolation notes

10839f0

Agent-Logs-Url: https://github.com/MetaMask/metamask-extension/sessions/f6962b91-3f48-45ea-9ca8-3d3859439aad Co-authored-by: MajorLift <34228073+MajorLift@users.noreply.github.com>

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Copilot AI changed the title ~~[WIP] Fix CI runner resource isolation for benchmarks~~ Add benchmark CI isolation flags and document runner adoption gate Apr 27, 2026

Copilot finished work on behalf of MajorLift April 27, 2026 15:04

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MajorLift added this to PR review queue Apr 27, 2026

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MajorLift changed the title ~~Add benchmark CI isolation flags and document runner adoption gate~~ ci(benchmarks): Add benchmark CI isolation flags and document runner adoption gate Apr 27, 2026

MajorLift removed the status in PR review queue Apr 27, 2026

Add .js extensions to chrome.js imports in chrome-driver.test.ts

4e25deb

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MajorLift added 2 commits April 27, 2026 14:00

Suppress import-x/extensions on chrome.js dynamic import in `chro…

503e2c0

…me-driver.test.ts`

[force-builds] [skip-e2e]

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Fix \ChromeDriver\ type annotation in \chrome-driver.test.ts\ to …

7df0c84

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Default ChromeDriver.build parameter to {} so all options are opt…

4007e67

…ional

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ci(benchmarks): Add benchmark CI isolation flags and document runner adoption gate#42164

ci(benchmarks): Add benchmark CI isolation flags and document runner adoption gate#42164
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Copilot AI commented Apr 27, 2026 •

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