From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
Johannes Weiner <jweiner@redhat.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 6/7] mm/memcg: rework inactive_ratio calculation
Date: Thu, 8 Mar 2012 14:36:19 +0900 [thread overview]
Message-ID: <20120308143619.4f25880e.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <4F50678C.6010800@openvz.org>
On Fri, 02 Mar 2012 10:24:12 +0400
Konstantin Khlebnikov <khlebnikov@openvz.org> wrote:
> KAMEZAWA Hiroyuki wrote:
> > On Wed, 29 Feb 2012 13:16:00 +0400
> > Konstantin Khlebnikov<khlebnikov@openvz.org> wrote:
> >
> >> This patch removes precalculated zone->inactive_ratio.
> >> Now it always calculated in inactive_anon_is_low() from current lru size.
> >> After that we can merge memcg and non-memcg cases and drop duplicated code.
> >>
> >> We can drop precalculated ratio, because its calculation fast enough to do it
> >> each time. Plus precalculation uses zone size as basis, this estimation not
> >> always match with page lru size, for example if a significant proportion
> >> of memory occupied by kernel objects.om memory cgroup which is triggered this memory reclaim.
> This is more reason
> >>
> >> Signed-off-by: Konstantin Khlebnikov<khlebnikov@openvz.org>
> >
> > Maybe good....but please don't change the user interface /proc/zoneinfo implicitly.
> > How about calculating inactive_ratio at reading /proc/zoneinfo ?
>
> I don't know... Anybody need this?
I don't like changes in user interface without any caution in feature-removal-schedule.txt
I just don't Ack. If others say ok, please go ahead with them.
Thanks,
-Kame
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next prev parent reply other threads:[~2012-03-08 5:37 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-29 9:15 [PATCH v4 ch1 0/7] mm: some cleanup/rework before lru_lock splitting Konstantin Khlebnikov
2012-02-29 9:15 ` [PATCH 1/7] mm/memcg: scanning_global_lru means mem_cgroup_disabled Konstantin Khlebnikov
2012-03-02 5:12 ` KAMEZAWA Hiroyuki
2012-03-06 11:46 ` Glauber Costa
2012-02-29 9:15 ` [PATCH 2/7] mm/memcg: move reclaim_stat into lruvec Konstantin Khlebnikov
2012-03-02 5:14 ` KAMEZAWA Hiroyuki
2012-02-29 9:15 ` [PATCH 3/7] mm: rework __isolate_lru_page() file/anon filter Konstantin Khlebnikov
2012-03-02 5:17 ` KAMEZAWA Hiroyuki
2012-03-02 5:51 ` Konstantin Khlebnikov
2012-03-02 8:17 ` KAMEZAWA Hiroyuki
2012-03-02 8:53 ` Konstantin Khlebnikov
2012-03-06 11:57 ` Glauber Costa
2012-03-06 12:53 ` Konstantin Khlebnikov
2012-03-03 0:22 ` Hugh Dickins
2012-03-03 8:27 ` Konstantin Khlebnikov
2012-03-03 9:20 ` Konstantin Khlebnikov
2012-03-03 9:16 ` [PATCH 3/7 v2] " Konstantin Khlebnikov
2012-03-05 0:27 ` KAMEZAWA Hiroyuki
2012-03-07 3:22 ` Hugh Dickins
2012-03-08 5:30 ` KAMEZAWA Hiroyuki
2012-03-09 2:06 ` Hugh Dickins
2012-03-09 7:16 ` Konstantin Khlebnikov
2012-03-10 0:04 ` Hugh Dickins
2012-03-10 6:55 ` Konstantin Khlebnikov
2012-03-10 9:46 ` Konstantin Khlebnikov
2012-03-15 1:47 ` Hugh Dickins
2012-03-15 6:03 ` Konstantin Khlebnikov
2012-03-15 23:58 ` Hugh Dickins
2012-02-29 9:15 ` [PATCH 4/7] mm: push lru index into shrink_[in]active_list() Konstantin Khlebnikov
2012-03-02 5:21 ` KAMEZAWA Hiroyuki
2012-03-03 0:24 ` Hugh Dickins
2012-02-29 9:15 ` [PATCH 5/7] mm: rework reclaim_stat counters Konstantin Khlebnikov
2012-03-02 5:28 ` KAMEZAWA Hiroyuki
2012-03-02 6:11 ` Konstantin Khlebnikov
2012-03-02 8:03 ` KAMEZAWA Hiroyuki
2012-02-29 9:16 ` [PATCH 6/7] mm/memcg: rework inactive_ratio calculation Konstantin Khlebnikov
2012-03-02 5:31 ` KAMEZAWA Hiroyuki
2012-03-02 6:24 ` Konstantin Khlebnikov
2012-03-08 5:36 ` KAMEZAWA Hiroyuki [this message]
2012-02-29 9:16 ` [PATCH 7/7] mm/memcg: use vm_swappiness from target memory cgroup Konstantin Khlebnikov
2012-03-02 5:32 ` KAMEZAWA Hiroyuki
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