lkml.org 
[lkml]   [2011]   [Dec]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Kswapd in 3.2.0-rc5 is a CPU hog
On Mon, 26 Dec 2011 20:35:46 +0800
Hillf Danton <dhillf@gmail.com> wrote:

> On Sun, Dec 25, 2011 at 6:21 PM, Nikolay S. <nowhere@hakkenden.ath.cx> wrote:
> >
> > Uhm.., is this patch against 3.2-rc4? I can not apply it. There's no
> > mem_cgroup_lru_del_list(), but void mem_cgroup_del_lru_list(). Should I
> > place changes there?
> >
> > And also, -rc7 is here. May the problem be addressed as part of some
> > ongoing work? Is there any reason to try -rc7 (the problem requires
> > several days of uptime to become obvious)?
> >
>
> Sorry, Nikolay, it is not based on the -next, nor on the -rc5(I assumed it was).
> The following is based on -next, and if you want to test -rc5, please
> grep MEM_CGROUP_ZSTAT mm/memcontrol.c and change it.
>
> Best regard
>

Hmm ? memcg is used ? Why do you consider this will be a help ?

Thanks,
-Kame

> Hillf
> ---
>
> --- a/mm/memcontrol.c Mon Dec 26 20:34:38 2011
> +++ b/mm/memcontrol.c Mon Dec 26 20:37:54 2011
> @@ -1076,7 +1076,11 @@ void mem_cgroup_lru_del_list(struct page
> VM_BUG_ON(!memcg);
> mz = page_cgroup_zoneinfo(memcg, page);
> /* huge page split is done under lru_lock. so, we have no races. */
> - MEM_CGROUP_ZSTAT(mz, lru) -= 1 << compound_order(page);
> + if (WARN_ON_ONCE(MEM_CGROUP_ZSTAT(mz, lru) <
> + (1 << compound_order(page))))
> + MEM_CGROUP_ZSTAT(mz, lru) = 0;
> + else
> + MEM_CGROUP_ZSTAT(mz, lru) -= 1 << compound_order(page);
> }
>
> void mem_cgroup_lru_del(struct page *page)
>
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
> the body to majordomo@kvack.org. For more info on Linux MM,
> see: http://www.linux-mm.org/ .
> Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
> Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
>



\
 
 \ /
  Last update: 2011-12-27 01:25    [W:0.070 / U:3.516 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site