Closed Bug 1382544 Opened 2 years ago Closed 2 years ago

44.6 - 48.64% build times (linux64) regression on push 50d28d418535c3921318ee430dc49eca3a7731b5 (Thu Jul 20 2017)

Categories

(Core :: CSS Parsing and Computation, defect)

Unspecified
Linux
defect
Not set

Tracking

()

RESOLVED WONTFIX

People

(Reporter: igoldan, Unassigned)

References

Details

(Keywords: regression)

We have detected a build metrics regression from push:

https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=50d28d418535c3921318ee430dc49eca3a7731b5

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

Regressions:

 49%  build times summary linux64 asan asan opt taskcluster-c4.4xlarge     1,079.82 -> 1,605.05
 45%  build times summary linux64 asan asan-fuzzing taskcluster-c4.4xlarge 1,134.43 -> 1,640.39


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=8085

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
Component: Untriaged → CSS Parsing and Computation
Product: Firefox → Core
:cpeterson Is this something we were expecting, due to enabling Stylo building?
Flags: needinfo?(cpeterson)
Yes, this is expected. We had the same build time regression with first building Stylo on other platforms.

Subsequent linux64-asan builds (for changesets that don't modify Rust code) should be just as fast as before because sccache can cache the compiled Rust code. We are also working on other tool improvements to speed up Rust compile times, such as bug 1380321, bug 1367940, and fixes in the Rust compiler itself.
Status: NEW → RESOLVED
Closed: 2 years ago
Flags: needinfo?(cpeterson)
Resolution: --- → WORKSFORME
Resolution: WORKSFORME → WONTFIX
You need to log in before you can comment on or make changes to this bug.