Closed Bug 1540135 Opened 8 months ago Closed 7 months ago

Add a startup mochitest tracking mainthread I/O

Categories

(Firefox :: General, enhancement, P1)

enhancement

Tracking

()

RESOLVED FIXED
Firefox 68
Tracking Status
firefox68 --- fixed

People

(Reporter: florian, Assigned: florian)

References

(Depends on 2 open bugs)

Details

(Whiteboard: [fxperf:p1])

Attachments

(2 files)

We know main thread I/O is terrible for (cold) startup performance. Despite working on removing existing main thread I/O syscalls during startup, we regularly see regressions (eg. bug 1527704, bug 1538250, and even the older bug 1527879).

Blocks: 1543096
Depends on: 1549723
Pushed by fqueze@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/eb8757f9586f
Add a startup mochitest tracking mainthread I/O, r=Felipe.
Comment on attachment 9063311 [details] [diff] [review]
Fix for asan builds

Looks okay - hopefully this fixes the build!
Attachment #9063311 - Flags: review+
Pushed by btara@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/5add0a9fd0fb
follow up to fix browser_startup_mainthreadio.js on asan builds where the crash reporter is disabled, r=mconley CLOSED TREE
Status: NEW → RESOLVED
Closed: 7 months ago
Resolution: --- → FIXED
Target Milestone: --- → Firefox 68
Backout by malexandru@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/7602b3fa01c7
Backed out changeset 5add0a9fd0fb for causing leaks
Pushed by fqueze@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/7785e3f08f85
Add a startup mochitest tracking mainthread I/O, r=Felipe.
Depends on: 1553113
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