Messages in this thread | | | Date | Tue, 8 Jun 2021 21:51:30 +0200 (CEST) | From | Julia Lawall <> | Subject | find_new_ilb |
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Starting from the following commit:
commit 45da7a2b0af8fa29dff2e6ba8926322068350fce Author: Peter Zijlstra <peterz@infradead.org> Date: Tue Aug 18 10:48:17 2020 +0200
sched/fair: Exclude the current CPU from find_new_ilb()
up through Linux 5.12, I observed that often when most of the machine was idle, there could be many (thousands) of sched_wake_idle_without_ipi events, typically between cores 0 and 1. I don't see this any more in Linux v5.13-rc1. I looked through the patches to fair.c and core.c subsequent to v5.12, and I didn't see anything that explicitly addresses this issue. Before I plunge into another set of rounds of bisecting, I wonder if anyone knows whether and how this problem was resolved?
thanks, julia
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