1493960 - 7.91% Resident Memory (windows7-32) regression (Thu Sep 20 2018)

Status: RESOLVED WORKSFORME

(Testing :: General, defect)

Description

[Ionuț Goldan [:igoldan]]

We have detected an awsy regression *around* this push:

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?changeset=4bc0d86a17a8630ff5a2868980d72d3ecb9efb30

Regressions:

  8%  Resident Memory windows7-32 pgo stylo     447,651,110.80 -> 483,042,424.75


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=16082

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]]

This regression seems to have been caused by an infra change on Windows 7 machines. I retriggered old changesets which now return regressive values.

Comment 2

[Ionuț Goldan [:igoldan]]

:gps do you happen to know something about this?

Comment 3

[Ionuț Goldan [:igoldan]]

This also happens on mozilla-beta branch.

Comment 4

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

the mozilla-beta branch is magically fixed- it is as if we had a 1 week window of a single less noisy mode and now we are back to bi-modal.  In fact mozilla-inbound is the same way.