Bug 2279768

Summary:	Python built with gcc -O3
Product:	[Fedora] Fedora	Reporter:	Aoife Moloney <amoloney>
Component:	Changes Tracking	Assignee:	Miro Hrončok <mhroncok>
Status:	CLOSED COMPLETED	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	mhroncok, torsava
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	python3.13-3.13.0~b1-1.fc41	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2024-11-06 13:31:13 UTC	Type:	---
Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2244836
Bug Blocks:	2233686

Description Aoife Moloney 2024-05-08 15:58:27 UTC

This is a tracking bug for Change: Python built with gcc -O3
For more details, see: https://fedoraproject.org/wiki/Changes/Python_built_with_gcc_O3

Instead of Fedora's default -O2 compiler flag, we will use -O3 to build CPython.
This only impacts the interpreter and Python standard library, not any 3rd party extension modules built as RPM or on developer machines.
This aligns with the way Python is built upstream.
According to our performance measurements, it makes Python significantly faster (pyperformance geometric mean: 1.04x faster).

If you encounter a bug related to this Change, please do not comment here. Instead create a new bug and set it to block this bug.

Comment 1 Tomas Orsava 2024-05-22 12:21:33 UTC

This is now live in Python 3.13. Waiting for Python 3.13 to become the main Python before considering backports to other places.

Comment 2 Miro Hrončok 2024-06-12 15:17:40 UTC

Python 3.13 is the main Python now.