1489065 - 6.61% installer size (osx-cross) regression on push a9caa2a0b5ed5189e945762272e895439aa7b847 (Wed Sep 5 2018)

Status: RESOLVED WONTFIX

(Firefox Build System :: General, defect)

Description

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

We have detected a build metrics regression from push:

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?changeset=a9caa2a0b5ed5189e945762272e895439aa7b847

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

Regressions:

  7%  installer size osx-cross opt      67,645,845.00 -> 72,119,403.33


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=15644

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://developer.mozilla.org/en-US/docs/Mozilla/Performance/Automated_Performance_Testing_and_Sheriffing/Build_Metrics

Comment 1

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

:glandium, can you confirm that we wanted to increase the installer size by 7% with your change for osx lto builds?

Comment 2

[Mike Hommey [:glandium]]

It's a tradeoff. There should be accompanying (large) perf improvements.

Comment 3

[Mike Hommey [:glandium]]

That was mentioned in bug 1473786 comment 3, BTW.