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GeezerVison is showing github.com — test: fix flaky test-performance-eventloopdelay by mcollina · Pull Request #61629 · nodejs/node Conversation
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Summary
ProblemThe test was flaky because the histogram sampling might not have completed Solution
VerificationVerified with Refs: nodejs/reliability#1450
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@ ## main #61629 +/- ## ========================================== - Coverage 89.76% 89.74% -0.02% ========================================== Files 673 673 Lines 203945 203945 Branches 39191 39194 +3 ========================================== - Hits 183076 183040 -36 - Misses 13198 13233 +35 - Partials 7671 7672 +1 🚀 New features to boost your workflow:
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The test was flaky because the histogram sampling might not have completed before the assertions ran. By using setImmediate before disabling the histogram and checking values, we give the event loop a chance to record final samples on slower systems. Also added an explicit check for histogram.count > 0 to provide a clearer error message if no samples are recorded. Refs: nodejs/reliability#1450 PR-URL: #61629 Reviewed-By: Chengzhong Wu <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>
The test was flaky because the histogram sampling might not have completed before the assertions ran. By using setImmediate before disabling the histogram and checking values, we give the event loop a chance to record final samples on slower systems. Also added an explicit check for histogram.count > 0 to provide a clearer error message if no samples are recorded. Refs: nodejs/reliability#1450 PR-URL: #61629 Reviewed-By: Chengzhong Wu <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>
This MR contains the following updates: | Package | Update | Change | |---|---|---| | [node](https://nodejs.org) ([source](https://github.com/nodejs/node)) | patch | `25.6.0` → `25.6.1` | MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot). **Proposed changes to behavior should be submitted there as MRs.** --- ### Release Notes <details> <summary>nodejs/node (node)</summary> ### [`v25.6.1`](https://github.com/nodejs/node/releases/tag/v25.6.1): 2026-02-10, Version 25.6.1 (Current), @​aduh95 [Compare Source](nodejs/node@v25.6.0...v25.6.1) ##### Notable Changes - \[[`47df4328d7`](nodejs/node@47df4328d7)] - **build,deps**: replace `cjs-module-lexer` with `merve` (Yagiz Nizipli) [#​61456](nodejs/node#61456) ##### Commits - \[[`47df4328d7`](nodejs/node@47df4328d7)] - **build,deps**: replace cjs-module-lexer with merve (Yagiz Nizipli) [#​61456](nodejs/node#61456) - \[[`a727054503`](nodejs/node@a727054503)] - **deps**: upgrade npm to 11.9.0 (npm team) [#​61685](nodejs/node#61685) - \[[`c78c49ed6b`](nodejs/node@c78c49ed6b)] - **deps**: update amaro to 1.1.7 (Node.js GitHub Bot) [#​61730](nodejs/node#61730) - \[[`4790816d9b`](nodejs/node@4790816d9b)] - **deps**: update minimatch to 10.1.2 (Node.js GitHub Bot) [#​61732](nodejs/node#61732) - \[[`8c71740e8a`](nodejs/node@8c71740e8a)] - **deps**: update undici to 7.21.0 (Node.js GitHub Bot) [#​61683](nodejs/node#61683) - \[[`e559ef6ab1`](nodejs/node@e559ef6ab1)] - **deps**: update googletest to [`56efe39`](nodejs/node@56efe39) (Node.js GitHub Bot) [#​61605](nodejs/node#61605) - \[[`300de2bb5a`](nodejs/node@300de2bb5a)] - **deps**: update amaro to 1.1.6 (Node.js GitHub Bot) [#​61603](nodejs/node#61603) - \[[`e71e9505ef`](nodejs/node@e71e9505ef)] - **dns**: fix Windows SRV ECONNREFUSED by adjusting c-ares fallback detection (notvivek12) [#​61453](nodejs/node#61453) - \[[`439b816bc7`](nodejs/node@439b816bc7)] - **doc**: clarify EventEmitter error handling in threat model (Matteo Collina) [#​61701](nodejs/node#61701) - \[[`c1c6641f23`](nodejs/node@c1c6641f23)] - **doc**: mention default option for test runner env (Steven) [#​61659](nodejs/node#61659) - \[[`41ec451f98`](nodejs/node@41ec451f98)] - **doc**: fix --inspect security warning section (Tim Perry) [#​61675](nodejs/node#61675) - \[[`bb90ef2356`](nodejs/node@bb90ef2356)] - **doc**: document `url.format(urlString)` as deprecated under DEP0169 (René) [#​61644](nodejs/node#61644) - \[[`513df82e6f`](nodejs/node@513df82e6f)] - **doc**: update to Visual Studio 2026 manual install (Mike McCready) [#​61655](nodejs/node#61655) - \[[`9409d30736`](nodejs/node@9409d30736)] - **doc**: deprecation add more codemod (Augustin Mauroy) [#​61642](nodejs/node#61642) - \[[`75a7a67151`](nodejs/node@75a7a67151)] - **doc**: fix grammatical error in README.md (ayj8201) [#​61653](nodejs/node#61653) - \[[`821e59e884`](nodejs/node@821e59e884)] - **doc**: correct tools README Boxstarter link (Mike McCready) [#​61638](nodejs/node#61638) - \[[`4998f539a0`](nodejs/node@4998f539a0)] - **doc**: update `server.dropMaxConnection` link (YuSheng Chen) [#​61584](nodejs/node#61584) - \[[`9383ac4ab7`](nodejs/node@9383ac4ab7)] - **http**: implement slab allocation for HTTP header parsing (Mert Can Altin) [#​61375](nodejs/node#61375) - \[[`e90eb1d561`](nodejs/node@e90eb1d561)] - **meta**: persist sccache daemon until end of build workflows (René) [#​61639](nodejs/node#61639) - \[[`ade36ac367`](nodejs/node@ade36ac367)] - **meta**: bump github/codeql-action from 4.31.9 to 4.32.0 (dependabot\[bot]) [#​61622](nodejs/node#61622) - \[[`26638bd67f`](nodejs/node@26638bd67f)] - **meta**: bump step-security/harden-runner from 2.14.0 to 2.14.1 (dependabot\[bot]) [#​61621](nodejs/node#61621) - \[[`eaa9a96cb6`](nodejs/node@eaa9a96cb6)] - **meta**: bump actions/setup-python from 6.1.0 to 6.2.0 (dependabot\[bot]) [#​61627](nodejs/node#61627) - \[[`fd98187828`](nodejs/node@fd98187828)] - **meta**: bump cachix/cachix-action (dependabot\[bot]) [#​61626](nodejs/node#61626) - \[[`820c1d021c`](nodejs/node@820c1d021c)] - **meta**: bump actions/setup-node from 6.1.0 to 6.2.0 (dependabot\[bot]) [#​61625](nodejs/node#61625) - \[[`72a4136bd5`](nodejs/node@72a4136bd5)] - **meta**: bump actions/cache from 5.0.1 to 5.0.3 (dependabot\[bot]) [#​61624](nodejs/node#61624) - \[[`e3ef6cb3bc`](nodejs/node@e3ef6cb3bc)] - **meta**: bump peter-evans/create-pull-request from 8.0.0 to 8.1.0 (dependabot\[bot]) [#​61623](nodejs/node#61623) - \[[`020a836202`](nodejs/node@020a836202)] - **meta**: bump actions/stale from 10.1.0 to 10.1.1 (dependabot\[bot]) [#​61620](nodejs/node#61620) - \[[`0df72f07c8`](nodejs/node@0df72f07c8)] - **meta**: bump actions/checkout from 6.0.1 to 6.0.2 (dependabot\[bot]) [#​61619](nodejs/node#61619) - \[[`d147c08b83`](nodejs/node@d147c08b83)] - **module**: do not invoke resolve hooks twice for imported cjs (Joyee Cheung) [#​61529](nodejs/node#61529) - \[[`a2843f8556`](nodejs/node@a2843f8556)] - **net**: defer synchronous destroy calls in internalConnect (RajeshKumar11) [#​61658](nodejs/node#61658) - \[[`7fb7030781`](nodejs/node@7fb7030781)] - **repl**: fix flaky test-repl-programmatic-history (Matteo Collina) [#​61614](nodejs/node#61614) - \[[`d4c9b5cf5b`](nodejs/node@d4c9b5cf5b)] - **sqlite**: avoid extra copy for large text binds (Ali Hassan) [#​61580](nodejs/node#61580) - \[[`aa1b3661d9`](nodejs/node@aa1b3661d9)] - **sqlite**: use DictionaryTemplate for run() result (Mert Can Altin) [#​61432](nodejs/node#61432) - \[[`9c8ad7e881`](nodejs/node@9c8ad7e881)] - **src**: elide heap allocation in structured clone implementation (Anna Henningsen) [#​61703](nodejs/node#61703) - \[[`c4ecfef93d`](nodejs/node@c4ecfef93d)] - **src**: use simdutf for one-byte string UTF-8 write in stringBytes (Mert Can Altin) [#​61696](nodejs/node#61696) - \[[`28905b9734`](nodejs/node@28905b9734)] - **src**: consolidate C++ ReadFileSync/WriteFileSync utilities (Joyee Cheung) [#​61662](nodejs/node#61662) - \[[`e90cec2f69`](nodejs/node@e90cec2f69)] - **test**: restraint version replacement pattern in snapshots (Chengzhong Wu) [#​61748](nodejs/node#61748) - \[[`adce20c0a1`](nodejs/node@adce20c0a1)] - **test**: print stack immediately avoiding GC interleaving (Chengzhong Wu) [#​61699](nodejs/node#61699) - \[[`7643bc8999`](nodejs/node@7643bc8999)] - **test**: fix case-insensitive path matching on Windows (Matteo Collina) [#​61682](nodejs/node#61682) - \[[`23d1ecf66f`](nodejs/node@23d1ecf66f)] - **test**: fix flaky test-performance-eventloopdelay (Matteo Collina) [#​61629](nodejs/node#61629) - \[[`99012a88ed`](nodejs/node@99012a88ed)] - **test**: remove duplicate wpt tests (Filip Skokan) [#​61617](nodejs/node#61617) - \[[`a8b32b8ce1`](nodejs/node@a8b32b8ce1)] - **test**: fix race condition in watch mode tests (Matteo Collina) [#​61615](nodejs/node#61615) - \[[`086a5a5a25`](nodejs/node@086a5a5a25)] - **test**: update WPT for url to [`e3c46fd`](nodejs/node@e3c46fdf55) (Node.js GitHub Bot) [#​61602](nodejs/node#61602) - \[[`f0574fd419`](nodejs/node@f0574fd419)] - **test**: use the skipIfNoWatch() utility function (Luigi Pinca) [#​61531](nodejs/node#61531) - \[[`b064ddc221`](nodejs/node@b064ddc221)] - **test**: unify assertSnapshot common patterns (Chengzhong Wu) [#​61590](nodejs/node#61590) - \[[`17122e521b`](nodejs/node@17122e521b)] - **test\_runner**: fix test enqueue when test file has syntax error (Edy Silva) [#​61573](nodejs/node#61573) - \[[`bad3f02dd9`](nodejs/node@bad3f02dd9)] - **tools**: enforce removal of `lts-watch-*` labels on release proposals (Antoine du Hamel) [#​61672](nodejs/node#61672) - \[[`a8f33fd6bd`](nodejs/node@a8f33fd6bd)] - **tools**: use ubuntu-slim runner in meta GitHub Actions (Tierney Cyren) [#​61663](nodejs/node#61663) - \[[`c843e447ca`](nodejs/node@c843e447ca)] - **tools**: test `--shared-merve` in `test-shared` workflow (Antoine du Hamel) [#​61649](nodejs/node#61649) - \[[`2fedc03f96`](nodejs/node@2fedc03f96)] - **tools**: update OpenSSL to 3.5.5 in `test-shared` (Antoine du Hamel) [#​61551](nodejs/node#61551) - \[[`1c1db94670`](nodejs/node@1c1db94670)] - **tools,win**: upgrade install additional tools to Visual Studio 2026 (Mike McCready) [#​61562](nodejs/node#61562) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever MR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this MR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi45Ny4wIiwidXBkYXRlZEluVmVyIjoiNDIuOTcuMCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiUmVub3ZhdGUgQm90IiwiYXV0b21hdGlvbjpib3QtYXV0aG9yZWQiLCJkZXBlbmRlbmN5LXR5cGU6OnBhdGNoIl19-->
The test was flaky because the histogram sampling might not have completed before the assertions ran. By using setImmediate before disabling the histogram and checking values, we give the event loop a chance to record final samples on slower systems. Also added an explicit check for histogram.count > 0 to provide a clearer error message if no samples are recorded. Refs: nodejs/reliability#1450 PR-URL: #61629 Reviewed-By: Chengzhong Wu <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>
The test was flaky because the histogram sampling might not have completed before the assertions ran. By using setImmediate before disabling the histogram and checking values, we give the event loop a chance to record final samples on slower systems. Also added an explicit check for histogram.count > 0 to provide a clearer error message if no samples are recorded. Refs: nodejs/reliability#1450 PR-URL: #61629 Reviewed-By: Chengzhong Wu <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>
The test was flaky because the histogram sampling might not have completed before the assertions ran. By using setImmediate before disabling the histogram and checking values, we give the event loop a chance to record final samples on slower systems. Also added an explicit check for histogram.count > 0 to provide a clearer error message if no samples are recorded. Refs: nodejs/reliability#1450 PR-URL: #61629 Reviewed-By: Chengzhong Wu <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>
The test was flaky because the histogram sampling might not have completed before the assertions ran. By using setImmediate before disabling the histogram and checking values, we give the event loop a chance to record final samples on slower systems. Also added an explicit check for histogram.count > 0 to provide a clearer error message if no samples are recorded. Refs: nodejs/reliability#1450 PR-URL: #61629 Reviewed-By: Chengzhong Wu <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>
The test was flaky because the histogram sampling might not have completed before the assertions ran. By using setImmediate before disabling the histogram and checking values, we give the event loop a chance to record final samples on slower systems. Also added an explicit check for histogram.count > 0 to provide a clearer error message if no samples are recorded. Refs: nodejs/reliability#1450 PR-URL: #61629 Reviewed-By: Chengzhong Wu <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>
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