Messages in this thread | | | From | Andrei Vagin <> | Date | Wed, 16 Nov 2022 10:50:03 -0800 | Subject | Re: [PATCH] sched: consider WF_SYNC to find idle siblings |
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Hello Mel and Prateek,
Thank you both for running tests and publishing results here.
On Wed, Nov 16, 2022 at 2:57 AM Mel Gorman <mgorman@suse.de> wrote: <snip> > > This is not too surprising as UDP_STREAM is blasting packets so there are > wakeups but the waker is not going to sleep immediately. So yeah, there are > cases where the patch helps but when it hurts, it can hurt a lot. The patch > certainly demonstrates that there is room for improvement on how WF_SYNC is > treated but as it stands, it would start a game of apply/revert ping-pong > as different bisections showed the patch caused one set of problems and > the revert caused another.
I agree with these conclusions. The situation is more complex than how I saw it initially.
Thanks, Andrei
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