Bug: Intermittent browser/base/content/test/performance/browser_startup_mainthreadio.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2022-10-12 00:11:22+00:00
Resolved: 2024-04-29 06:57:42+00:00

**Filed by:** mlaza [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=392936575&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/YVvLlowwTIuh-sxS7zDmFg/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-10-11T23:19:03.082Z] 23:19:03     INFO - TEST-PASS | browser/base/content/test/performance/browser_startup_mainthreadio.js | close on /builds/worker/workspace/build/application/firefox/browser/features/webcompat@mozilla.org.xpi as many times as expected before opening first browser window - 
[task 2022-10-11T23:19:03.084Z] 23:19:03     INFO - known main thread IO paths during before first paint:
[task 2022-10-11T23:19:03.084Z] 23:19:03     INFO -   /builds/worker/workspace/build/application/firefox/browser/features/formautofill@mozilla.org.xpi - condition: true, stat: 1, close: 1, listedPath: XREAppFeat:formautofill@mozilla.org.xpi
[task 2022-10-11T23:19:03.085Z] 23:19:03     INFO -   *ld.so.conf* - condition: true, read: 22, close: 11, listedPath: *ld.so.conf*
[task 2022-10-11T23:19:03.085Z] 23:19:03     INFO -   /tmp/tmppxsycynp.mozrunner/d3d11layers.guard - ignoreIfUnused: true, stat: 1, listedPath: ProfD:d3d11layers.guard
[task 2022-10-11T23:19:03.086Z] 23:19:03     INFO -   /tmp/tmppxsycynp.mozrunner/glcontext.guard - ignoreIfUnused: true, stat: 1, listedPath: ProfD:glcontext.guard
[task 2022-10-11T23:19:03.087Z] 23:19:03     INFO -   /tmp/tmppxsycynp.mozrunner/wmfvpxvideo.guard - ignoreIfUnused: true, stat: 1, listedPath: ProfD:wmfvpxvideo.guard
[task 2022-10-11T23:19:03.088Z] 23:19:03     INFO - Buffered messages finished
[task 2022-10-11T23:19:03.089Z] 23:19:03     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_startup_mainthreadio.js | unexpected close on /builds/worker/workspace/build/application/firefox/browser/features/webcompat@mozilla.org.xpi before first paint - 
[task 2022-10-11T23:19:03.089Z] 23:19:03     INFO - Stack trace:
[task 2022-10-11T23:19:03.089Z] 23:19:03     INFO -   0x7f294a6c7386
[task 2022-10-11T23:19:03.089Z] 23:19:03     INFO -   Task nsJARChannel::ContinueOpenLocalFile
[task 2022-10-11T23:19:03.089Z] 23:19:03     INFO -   XREMain::XRE_main
[task 2022-10-11T23:19:03.090Z] 23:19:03     INFO - (NSPRIOInterposer) close - /builds/worker/workspace/build/application/firefox/browser/features/webcompat@mozilla.org.xpi
[task 2022-10-11T23:19:03.091Z] 23:19:03     INFO - (NSPRIOInterposer) stat - /builds/worker/workspace/build/application/firefox/browser/features/formautofill@mozilla.org.xpi
[task 2022-10-11T23:19:03.092Z] 23:19:03     INFO - (NSPRIOInterposer) close - /builds/worker/workspace/build/application/firefox/browser/features/formautofill@mozilla.org.xpi
[task 2022-10-11T23:19:03.093Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf
[task 2022-10-11T23:19:03.093Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/x86_64-linux-gnu.conf
[task 2022-10-11T23:19:03.094Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/x86_64-linux-gnu.conf
[task 2022-10-11T23:19:03.095Z] 23:19:03     INFO - (NSPRIOInterposer) close - /etc/ld.so.conf.d/x86_64-linux-gnu.conf
[task 2022-10-11T23:19:03.096Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/libc.conf
[task 2022-10-11T23:19:03.097Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/libc.conf
[task 2022-10-11T23:19:03.097Z] 23:19:03     INFO - (NSPRIOInterposer) close - /etc/ld.so.conf.d/libc.conf
[task 2022-10-11T23:19:03.098Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/zz_x32-biarch-compat.conf
[task 2022-10-11T23:19:03.099Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/zz_x32-biarch-compat.conf
[task 2022-10-11T23:19:03.100Z] 23:19:03     INFO - (NSPRIOInterposer) close - /etc/ld.so.conf.d/zz_x32-biarch-compat.conf
[task 2022-10-11T23:19:03.101Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/zz_i386-biarch-compat.conf
[task 2022-10-11T23:19:03.102Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/zz_i386-biarch-compat.conf
[task 2022-10-11T23:19:03.103Z] 23:19:03     INFO - (NSPRIOInterposer) close - /etc/ld.so.conf.d/zz_i386-biarch-compat.conf
[task 2022-10-11T23:19:03.103Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/fakeroot-x86_64-linux-gnu.conf
[task 2022-10-11T23:19:03.104Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/fakeroot-x86_64-linux-gnu.conf
[task 2022-10-11T23:19:03.105Z] 23:19:03     INFO - (NSPRIOInterposer) close - /etc/ld.so.conf.d/fakeroot-x86_64-linux-gnu.conf
[task 2022-10-11T23:19:03.106Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/i386-linux-gnu.conf
[task 2022-10-11T23:19:03.107Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf.d/i386-linux-gnu.conf
[task 2022-10-11T23:19:03.107Z] 23:19:03     INFO - (NSPRIOInterposer) close - /etc/ld.so.conf.d/i386-linux-gnu.conf
[task 2022-10-11T23:19:03.108Z] 23:19:03     INFO - (NSPRIOInterposer) read - /etc/ld.so.conf
[task 2022-10-11T23:19:03.109Z] 23:19:03     INFO - (NSPRIOInterposer) close - /etc/ld.so.conf
[task 2022-10-11T23:19:03.110Z] 23:19:03     INFO - TEST-PASS | browser/base/content/test/performance/browser_startup_mainthreadio.js | stat on /builds/worker/workspace/build/application/firefox/browser/features/formautofill@mozilla.org.xpi as many times as expected before first paint -
```