1482795 - 2.5 - 10.54% Explicit Memory / Heap Unclassified (linux64, linux64-stylo-sequential, windows10-64, windows7-32) regression on push cfc33798c721117c0d16ab8d569b59f13fe2156c (Fri Aug 10 2018)

Status: RESOLVED FIXED

(Core :: Graphics, defect)

Description

[Ionuț Goldan [:igoldan]]

We have detected an awsy regression from push:

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?changeset=cfc33798c721117c0d16ab8d569b59f13fe2156c

As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

 11%  Heap Unclassified windows7-32 pgo stylo     37,721,709.65 -> 41,697,726.47
  9%  Heap Unclassified windows7-32 opt stylo     37,816,808.64 -> 41,354,176.60
  7%  Heap Unclassified windows10-64 opt stylo    63,901,252.06 -> 68,343,841.57
  6%  Heap Unclassified windows10-64 pgo stylo    63,965,525.33 -> 68,052,384.28
  4%  Explicit Memory windows7-32 pgo stylo       241,740,099.91 -> 251,157,672.80
  4%  Explicit Memory windows7-32 opt stylo       241,670,639.52 -> 250,691,251.86
  3%  Explicit Memory windows10-64 opt stylo      327,603,067.73 -> 338,031,311.47
  3%  Heap Unclassified linux64-stylo-sequential opt stylo-sequential86,377,378.73 -> 88,978,840.54
  3%  Heap Unclassified linux64 opt stylo         87,429,843.12 -> 89,614,191.24


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=14902

On the page above you can see an alert for each affected platform as well as a link to a graph showing the history of scores for this test. There is also a link to a treeherder page showing the jobs in a pushlog format.

To learn more about the regressing test(s), please see: https://wiki.mozilla.org/AWSY/Tests

Comment 1

[Ionuț Goldan [:igoldan]]

:nical the patch that caused this consisted of 2 bugs: bug 1482109 and bug 1482109. Which one is more related to these regressions?

Comment 2

[Nicolas Silva [:nical]]

My guess would be Bug 1482109 in which I consolidated various memory pressure observers into a single implementation but I just spotted a mistake in one of the patches that basically makes the observer skip all memory pressure events. I'll put a fix up today.

Comment 3

[Nicolas Silva [:nical]]

Attachment: Fix the memory pressure observer.

Two silly mistakes:
 - strcmp should have been compared with 0 (can't believe I'm still making this mistake).
 - The original puppet widget code handled mem pressure events for non visible widgets rather than visible ones.

Comment 4

[Nicolas Silva [:nical]]

try push https://treeherder.mozilla.org/#/jobs?repo=try&revision=77f66ebcc432bf40fdb4770c43eef5cda0022d41

Comment 5

[Ionuț Goldan [:igoldan]]

(In reply to Ionuț Goldan [:igoldan], Performance Sheriffing from comment #1)
> :nical the patch that caused this consisted of 2 bugs: bug 1482109 and bug
> 1482109. Which one is more related to these regressions?

Correcting mistake above with right info, to avoid confusion: "this consisted of 2 bugs: bug 1482109 and bug 1469496".

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/d4a387207b7a
Fix the gfx memory pressure observer. r=sotaro

Comment 7

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/d4a387207b7a

Comment 8

[Joel Maher ( :jmaher ) (UTC -8) (PTO back normal Nov 17)]

awsy improvements:
== Change summary for alert #15008 (as of Tue, 14 Aug 2018 23:21:29 GMT) ==

Improvements:

  9%  Heap Unclassified windows7-32 opt stylo     41,665,685.51 -> 37,926,555.17
  9%  Heap Unclassified windows7-32 pgo stylo     41,185,151.56 -> 37,513,583.98
  6%  Heap Unclassified windows10-64 opt stylo    67,963,439.07 -> 63,817,786.22
  6%  Heap Unclassified windows10-64 pgo stylo    67,868,899.39 -> 63,788,253.59
  4%  Heap Unclassified osx-10-10 opt stylo       97,034,552.56 -> 93,427,381.21
  4%  Explicit Memory windows10-64 opt stylo      336,029,089.54 -> 323,849,849.50
  3%  Resident Memory windows10-64 opt stylo      457,048,615.32 -> 444,086,354.58
  2%  Heap Unclassified linux64-stylo-sequential opt stylo-sequential88,210,390.37 -> 86,184,509.42

For up to date results, see: https://treeherder.mozilla.org/perf.html#/alerts?id=15008