1444514 - 5.48 - 6.93% Explicit Memory / Heap Unclassified / JS (osx-10-10) regression on push 79044302abd1165ed375708201090281972d32d8 (Wed Mar 7 2018)

Status: RESOLVED WONTFIX

(WebExtensions :: General, defect)

Description

[Joel Maher ( :jmaher ) (UTC -8)]

We have detected an awsy regression from push:

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?changeset=79044302abd1165ed375708201090281972d32d8

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

Regressions:

  7%  Heap Unclassified osx-10-10 opt stylo     67,090,151.29 -> 71,737,381.69
  7%  JS osx-10-10 opt stylo                    99,875,167.82 -> 106,742,142.90
  5%  Explicit Memory osx-10-10 opt stylo       322,208,479.34 -> 339,854,885.04


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=12031

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

[Joel Maher ( :jmaher ) (UTC -8)]

:kmag, I see you authored 2 of the 3 patches in the changeset:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=3eef48c0a0d9530f463d4f38dfc271925ca4d5d6&tochange=79044302abd1165ed375708201090281972d32d8

after retriggers that changeset looks to be the cause of a few regressions in memory.  Can you take a look at this?

Comment 2

[Kris Maglione [:kmag]]

This is expected. It's the result of needing to create an extra content process to host extension code. We already decided that this was acceptable when we shipped OOP extensions on Windows.