We noticed while looking at the Talos results for DevEdition that PGO isn't enabled for the Linux & Windows builds. Per Sylvestre, it should be.
Can you clarify why you think PGO is off? I'm looking at some logs, and MOZ_PGO=1 is set (as it is for vanilla Beta), and I see the pgo-profile-run target getting run. I also compared mozconfig and mozharness configs, and they appear to be the same other than the extra config file for devedition that changes the platform/product/mozconfig.
Looks like I misread things, sorry for the false alarm and confusion!
Status: NEW → RESOLVED
Last Resolved: a year ago
Resolution: --- → INVALID
Component: General Automation → General
Product: Release Engineering → Release Engineering
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