Pull request submitted to kernel team's mailing list:
https://lists.ubuntu.com/archives/kernel-team/2024-September/thread.html#153380
changing status to 'In Progress', assigning kernel team.
** Changed in: ubuntu-z-systems
Status: Incomplete => In Progress
** Changed in: linux (Ubuntu)
Status: Incomplete => In Progress
** Information type changed from Private to Public
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)
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https://bugs.launchpad.net/bugs/2072760
Title:
[24.10 FEAT] [KRN1911] Vertical CPU Polarization Support Stage 2
Status in Ubuntu on IBM z Systems:
In Progress
Status in linux package in Ubuntu:
In Progress
Bug description:
Description:
The linux kernel already provides a mechanism to switch from horizontal to
vertical polarization. However the current implementation does not tell the
Linux scheduler about the "cpu capacity" of the different types of vertical
cpus.
For vertical high cpus cpu capacity is 100%. For vertial low cpus it should
be close to 0% (should not be used). Difficult is to tell the cpu capacity of
vertical medium cpus.
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