Bug 13407

Summary:	Enable PGO for python when reproducible builds are enabled
Product:	[Build System, Metadata & Runtime] OE-Core	Reporter:	Joshua Watt <JPEWhacker>
Component:	core	Assignee:	Unassigned <unassigned>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	Medium	CC:	ccasciato, meta.mr.watcher, meta.watcher, randy.macleod, tvgamblin
Version:	unspecified
Target Milestone:	Future
Hardware:	All
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	No (bug/feature does not impact docs)

Description Joshua Watt 2019-06-19 01:46:23 UTC

Profile Guided Optimizations current cause Python to build in a non-reproducible manner, and thus are disabled when reproducible builds are requested. This is obviously not ideal, as we would like to have both reproducible builds and enable PGO.

Comment 1 Ross Burton 2019-06-19 09:34:11 UTC

Any idea how this can be achieved? The profiling isn't deterministic...

Comment 2 Randy MacLeod 2021-06-24 15:25:23 UTC

Collecting sample data is not deterministic but we could store one set of data and re-use that...

Comment 3 Randy MacLeod 2023-10-24 14:24:30 UTC

Bulk move from 4.99 or 0.00 to 5.99

Comment 4 Randy MacLeod 2026-01-29 16:24:46 UTC

The profiling guidance is statistical so the collection of that data is the non-reproducible part.