688422 - Memory usage increase detected in Mozmill Endurance tests 19-20 Sept 2011

Status: RESOLVED FIXED

(Core :: General, defect)

Description

[Mihaela Velimiroviciu (:mihaelav)]

Memory increases appear on Linux and Windows between Sept 19 and Sept 20:
- Windows: the difference is about 17 MB, from 69 MB to 86 MB
- Linux: the difference is about 28 MB, from 86 to 114 MB

On Linux, the previous values were about 88MB (or less) constantly.
On windows, the previous values were around 75 MB (but not that constant).

Reports 2011-09-19:
Win: http://mozmill-release.brasstacks.mozilla.com/#/endurance/report/10a26c9f0103d541c88ebfa5ccda0695
Linux: http://mozmill-release.brasstacks.mozilla.com/#/endurance/report/10a26c9f0103d541c88ebfa5ccda48ee

Reports 2011-09-20:
Win: http://mozmill-release.brasstacks.mozilla.com/#/endurance/report/df4c8750af577eceac3393a5eb0ba716
Linux: http://mozmill-release.brasstacks.mozilla.com/#/endurance/report/df4c8750af577eceac3393a5eb18436b

Changeset:
http://hg.mozilla.org/mozilla-central/rev/648d084ca28e

Comment 1

[Dave Hunt [:davehunt] [he/him] ⌚BST]

Pushlog between changesets:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=5319b0100025&tochange=648d084ca28e

Comment 2

[Brian Hackett [Laid off!]]

This should have been fixed by bug 688292, which fixed a memory usage spike in chrome-intensive workloads where jitcode was not getting released fast enough (a pseudo-leak).  Graphs 9/24 and later look similar to the 9/19 ones, e.g. Windows:

http://mozmill-release.brasstacks.mozilla.com/#/endurance/report/df4c8750af577eceac3393a5ebe65056

Comment 3

[Dave Hunt [:davehunt] [he/him] ⌚BST]

Confirmed memory usage has dropped back to pre-regression values from build 20110923030857.