Re: [PATCH] fix unused/stale swap cache handling on memcg v2

["KAMEZAWA Hiroyuki" <kamezawa.hiroyu@jp.fujitsu.com>]

Daisuke Nishimura さんは書きました：
> On Thu, 19 Mar 2009 19:01:18 +0900, Daisuke Nishimura
> <nishimura@mxp.nes.nec.co.jp> wrote:
>> On Thu, 19 Mar 2009 18:06:31 +0900, KAMEZAWA Hiroyuki
>> <kamezawa.hiroyu@jp.fujitsu.com> wrote:
>> > Core logic are much improved and I confirmed this logic can reduce
>> > orphan swap-caches. (But the patch size is bigger than expected.)
>> > Long term test is required and we have to verify paramaters are
>> reasonable
>> > and whether this doesn't make swapped-out applications slow..
>> >
>> Thank you for your patch.
>> I'll test this version and check what happens about swapcache usage.
>>
> hmm... underflow of inactive_anon seems to happen after a while.
> I've not done anything but causing memory pressure yet.
>
Hmm..maybe I miss something. maybe mem_cgroup_commit_charge() removes
Orphan flag implicitly.

I'll dig but may not be able to post a patch in this week.

Thanks,
-Kame



> [nishimura@GibsonE ~]$ cat /cgroup/memory/01/memory.stat
> cache 22994944
> rss 10559488
> pgpgin 2301009
> pgpgout 2292817
> active_anon 21004288
> inactive_anon 18446744073709510656
> active_file 1605632
> inactive_file 10944512
> unevictable 0
> hierarchical_memory_limit 33554432
> hierarchical_memsw_limit 50331648
> inactive_ratio 1
> recent_rotated_anon 857
> recent_rotated_file 10
> recent_scanned_anon 877
> recent_scanned_file 400
>
>
> Thanks,
> Daisuke Nishimura.
>
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