We have detected an awsy regression from push:

https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=6ded0846247c1cde80d583ce83478244e066d85a

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

Regressions:

0.32% Base Content JS windows7-32-shippable opt 3,158,490.67 -> 3,168,549.33

You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=21684

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

For what it's worth, we expected a small regression in this area. These changes will allow bigger memory savings later on.

Thanks for flagging this. As Jan said, this regression is expected in the intermediate stage until bytecode sharing is landed. Fixing Bug 1561739 will also resolve most of this regression as a side-effect (due to structure packing).