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SubjectRe: [PATCH] fix mem_cgroup_split_huge_fixup to work efficiently.
On Mon, 21 Nov 2011 16:30:11 +0530
Balbir Singh <bsingharora@gmail.com> wrote:

> On Thu, Nov 17, 2011 at 7:03 AM, KAMEZAWA Hiroyuki
> <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> >
> > I'll send this again when mm is shipped.
> > I sometimes see mem_cgroup_split_huge_fixup() in perf report and noticed
> > it's very slow. This fixes it. Any comments are welcome.
> >
>
> How do you see this - what tests?
>
Sometimes. By applications calling fork() or mremap(), mprotect(), which
will cause split_huge_page().
But not 100% reporoducable, yet.

Thanks,
-Kame



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