Revert "sched/core: Reduce cost of sched_move_task when config autogroup"

Project Discussion Kernel
1

6.14 kernel recently released has fix for performance issue related to task scheduling (https://www.phoronix.com/news/Linux-6.14-Sched-2-Year-Regress) and claims to have fixed as issue that created 30% performance drop when autogroup is enabled. Here is the link to the patch - https://lore.kernel.org/lkml/Z91A2-z01UOBKTN9@gmail.com/

Do we have plans to backport above fix to Jammy 22.04 (6.8 kernel)?

Ubuntu Version:
Ubuntu version (22.04 generic Jammy) →

Desktop Environment (if applicable):
NO

Problem Description:

Relevant System Information:

Screenshots or Error Messages:

  • Thank you!
1 Like
2

Hello @ganjihal,

Thank you for reporting the issue. The upstream fix has been backported to the stable trees as well, therefore it’s highly likely that we will pick up this fix as part of our upstream stable patchsets for Ubuntu 6.8 kernels.

1 Like
3

Thank you @kleber.souza