Re: [PATCH 1/2] sched/core: Cookied forceidle accounting per cpu

[cruzzhao]

在 2022/1/6 上午4:47, Josh Don 写道:
> On Wed, Jan 5, 2022 at 3:33 AM cruzzhao <cruzzhao@xxxxxxxxxxxxxxxxx> wrote:

> 
> I don't see how this is very helpful for steal_cookie_task(), since it
> isn't a targeted metric for that specific case. If you were interested
> in that specifically, I'd think you'd want to look at more direct
> metrics, such as task migration counts, or adding some
> accounting/histogram for the time between steal and load balance away.
> 

I've already read the patch "sched: CGroup tagging interface for core
scheduling", but it hasn't been merged into linux-next. IMO it's better
to do this at the cgroup level after the cgroup tagging interface is
introduced.

Best,
Cruz Zhao

> 
> That motivation makes more sense to me. Have you considered
> accumulating this at the cgroup level (ie. attributing it as another
> type of usage)?