1654458 - 9.02 - 86.05% build times / sccache requests_not_cacheable (linux64, osx-shippable, windows2012-64) regression on push bb79da633a2efe12f7a0a6e89d925961b8b444a7 (Mon July 20 2020)

Status: RESOLVED DUPLICATE of bug 1654465

(Testing :: Performance, defect)

Description

[Alexandru Ionescu (needinfo me) [:alexandrui]]

Perfherder has detected a build_metrics performance regression from push bb79da633a2efe12f7a0a6e89d925961b8b444a7. As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

86% sccache requests_not_cacheable windows2012-64 asan opt 86.00 -> 160.00
80% sccache requests_not_cacheable linux64 asan opt 299.00 -> 539.00
80% sccache requests_not_cacheable linux64 tsan opt 299.00 -> 539.00
9% build times osx-shippable opt nightly taskcluster-c5.4xlarge 2,824.97 -> 3,079.77

Details of the alert can be found in the alert summary, including links to graphs and comparisons for each of the affected tests. Please follow our guide to handling regression bugs and let us know your plans within 3 business days, or the offending patch(es) will be backed out in accordance with our regression policy.

For more information on performance sheriffing please see our FAQ.