From: Johannes Weiner <hannes@cmpxchg.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>,
David Howells <dhowells@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Christoph Lameter <cl@linux-foundation.org>,
"peterz@infradead.org" <peterz@infradead.org>,
"riel@redhat.com" <riel@redhat.com>,
"tytso@mit.edu" <tytso@mit.edu>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"elladan@eskimo.com" <elladan@eskimo.com>,
"npiggin@suse.de" <npiggin@suse.de>,
"minchan.kim@gmail.com" <minchan.kim@gmail.com>
Subject: Re: [PATCH 0/3] make mapped executable pages the first class citizen
Date: Sat, 27 Jun 2009 13:53:07 +0200 [thread overview]
Message-ID: <20090627115306.GA1741@cmpxchg.org> (raw)
In-Reply-To: <20090624114055.225D.A69D9226@jp.fujitsu.com>
On Wed, Jun 24, 2009 at 11:43:21AM +0900, KOSAKI Motohiro wrote:
> > On Tue, Jun 23, 2009 at 10:43:57PM +0800, David Howells wrote:
> > > Wu Fengguang <fengguang.wu@intel.com> wrote:
> > >
> > > > David, could you try running this when it occurred again?
> > > >
> > > > make Documentation/vm/page-types
> > > > Documentation/vm/page-types --raw # run as root
> > >
> > > Okay. I managed to catch it between the first and second OOMs, and ran the
> > > command you asked for.
> >
> > Thank you!
> >
> > > 0x0000000000000000 142261 555 ________________________________
> > > 0x0000000000000400 6797 26 __________B_____________________ buddy
> >
> > The buddy+free numbers are pretty high. 26MB PG_buddy pages means much
> > more actual free pages. So I bet the 555MB no-flag pages are mostly free pages.
>
> You mean our VM can make OOM although it have 600MB free pages?
No, it has 600MB free pages after an OOM - which only means that the
OOM killer did a good job ;-)
WARNING: multiple messages have this Message-ID (diff)
From: Johannes Weiner <hannes@cmpxchg.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>,
David Howells <dhowells@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Christoph Lameter <cl@linux-foundation.org>,
"peterz@infradead.org" <peterz@infradead.org>,
"riel@redhat.com" <riel@redhat.com>,
"tytso@mit.edu" <tytso@mit.edu>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"elladan@eskimo.com" <elladan@eskimo.com>,
"npiggin@suse.de" <npiggin@suse.de>,
"minchan.kim@gmail.com" <minchan.kim@gmail.com>
Subject: Re: [PATCH 0/3] make mapped executable pages the first class citizen
Date: Sat, 27 Jun 2009 13:53:07 +0200 [thread overview]
Message-ID: <20090627115306.GA1741@cmpxchg.org> (raw)
In-Reply-To: <20090624114055.225D.A69D9226@jp.fujitsu.com>
On Wed, Jun 24, 2009 at 11:43:21AM +0900, KOSAKI Motohiro wrote:
> > On Tue, Jun 23, 2009 at 10:43:57PM +0800, David Howells wrote:
> > > Wu Fengguang <fengguang.wu@intel.com> wrote:
> > >
> > > > David, could you try running this when it occurred again?
> > > >
> > > > make Documentation/vm/page-types
> > > > Documentation/vm/page-types --raw # run as root
> > >
> > > Okay. I managed to catch it between the first and second OOMs, and ran the
> > > command you asked for.
> >
> > Thank you!
> >
> > > 0x0000000000000000 142261 555 ________________________________
> > > 0x0000000000000400 6797 26 __________B_____________________ buddy
> >
> > The buddy+free numbers are pretty high. 26MB PG_buddy pages means much
> > more actual free pages. So I bet the 555MB no-flag pages are mostly free pages.
>
> You mean our VM can make OOM although it have 600MB free pages?
No, it has 600MB free pages after an OOM - which only means that the
OOM killer did a good job ;-)
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next prev parent reply other threads:[~2009-06-27 11:57 UTC|newest]
Thread overview: 205+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-17 2:23 [PATCH 0/3] make mapped executable pages the first class citizen Wu Fengguang
2009-05-17 2:23 ` Wu Fengguang
2009-05-17 2:23 ` [PATCH 1/3] vmscan: report vm_flags in page_referenced() Wu Fengguang
2009-05-17 2:23 ` Wu Fengguang
2009-05-17 2:23 ` [PATCH 2/3] vmscan: make mapped executable pages the first class citizen Wu Fengguang
2009-05-17 2:23 ` Wu Fengguang
2009-05-19 8:59 ` Wu Fengguang
2009-05-19 8:59 ` Wu Fengguang
2009-05-17 2:23 ` [PATCH 3/3] vmscan: merge duplicate code in shrink_active_list() Wu Fengguang
2009-05-17 2:23 ` Wu Fengguang
2009-05-18 9:16 ` Wu Fengguang
2009-05-18 9:16 ` Wu Fengguang
2009-05-19 2:43 ` Wu Fengguang
2009-05-19 2:43 ` Wu Fengguang
2009-05-19 10:18 ` Johannes Weiner
2009-05-19 10:18 ` Johannes Weiner
2009-05-19 10:32 ` Wu Fengguang
2009-05-19 10:32 ` Wu Fengguang
2009-06-18 14:46 ` [PATCH 0/3] make mapped executable pages the first class citizen David Howells
2009-06-18 14:46 ` David Howells
2009-06-18 14:51 ` David Howells
2009-06-18 14:51 ` David Howells
2009-06-18 16:18 ` David Howells
2009-06-18 16:18 ` David Howells
2009-06-18 16:57 ` Andrew Morton
2009-06-18 16:57 ` Andrew Morton
2009-06-20 4:33 ` Wu Fengguang
2009-06-20 4:33 ` Wu Fengguang
2009-06-20 8:24 ` David Howells
2009-06-20 8:24 ` David Howells
2009-06-23 14:43 ` David Howells
2009-06-23 14:43 ` David Howells
2009-06-24 1:43 ` KOSAKI Motohiro
2009-06-24 1:43 ` KOSAKI Motohiro
2009-06-24 2:32 ` Wu Fengguang
2009-06-24 2:32 ` Wu Fengguang
2009-06-24 2:43 ` KOSAKI Motohiro
2009-06-24 2:43 ` KOSAKI Motohiro
2009-06-24 2:49 ` Wu Fengguang
2009-06-24 2:49 ` Wu Fengguang
2009-06-27 11:53 ` Johannes Weiner [this message]
2009-06-27 11:53 ` Johannes Weiner
2009-06-27 18:40 ` David Howells
2009-06-27 18:40 ` David Howells
2009-06-24 13:07 ` David Howells
2009-06-24 13:07 ` David Howells
2009-06-27 7:12 ` Found the commit that causes the OOMs David Howells
2009-06-27 7:12 ` David Howells
2009-06-27 12:07 ` Minchan Kim
2009-06-27 12:07 ` Minchan Kim
2009-06-27 18:58 ` David Howells
2009-06-27 18:58 ` David Howells
2009-06-27 12:54 ` Johannes Weiner
2009-06-27 12:54 ` Johannes Weiner
2009-06-27 13:50 ` Minchan Kim
2009-06-27 13:50 ` Minchan Kim
2009-06-27 15:36 ` Johannes Weiner
2009-06-27 15:36 ` Johannes Weiner
2009-06-28 16:53 ` Minchan Kim
2009-06-28 16:53 ` Minchan Kim
2009-06-27 15:52 ` KOSAKI Motohiro
2009-06-27 15:52 ` KOSAKI Motohiro
2009-06-27 18:35 ` David Howells
2009-06-27 18:35 ` David Howells
2009-06-28 7:55 ` David Howells
2009-06-28 7:55 ` David Howells
2009-06-28 11:32 ` Wu Fengguang
2009-06-28 11:32 ` Wu Fengguang
2009-06-28 13:30 ` Minchan Kim
2009-06-28 13:30 ` Minchan Kim
2009-06-28 13:36 ` Minchan Kim
2009-06-28 13:36 ` Minchan Kim
2009-06-28 14:22 ` Wu Fengguang
2009-06-28 14:22 ` Wu Fengguang
2009-06-28 15:01 ` KOSAKI Motohiro
2009-06-28 15:01 ` KOSAKI Motohiro
2009-06-28 15:10 ` Wu Fengguang
2009-06-28 15:10 ` Wu Fengguang
2009-06-28 16:50 ` Minchan Kim
2009-06-28 16:50 ` Minchan Kim
2009-06-29 0:17 ` Minchan Kim
2009-06-29 0:17 ` Minchan Kim
2009-06-29 7:34 ` Wu Fengguang
2009-06-29 7:34 ` Wu Fengguang
2009-06-29 10:10 ` David Howells
2009-06-29 10:10 ` David Howells
2009-06-29 12:55 ` Wu Fengguang
2009-06-29 12:55 ` Wu Fengguang
2009-06-29 14:21 ` David Howells
2009-06-29 14:21 ` David Howells
2009-06-29 15:00 ` Minchan Kim
2009-06-29 15:00 ` Minchan Kim
2009-06-29 15:14 ` Wu Fengguang
2009-06-29 15:14 ` Wu Fengguang
2009-06-29 15:54 ` David Howells
2009-06-29 15:54 ` David Howells
2009-06-29 15:56 ` David Woodhouse
2009-06-29 15:56 ` David Woodhouse
2009-06-30 14:05 ` Wu Fengguang
2009-06-30 14:05 ` Wu Fengguang
2009-06-30 15:50 ` Minchan Kim
2009-06-30 15:50 ` Minchan Kim
2009-07-01 2:30 ` Wu Fengguang
2009-07-01 2:30 ` Wu Fengguang
2009-07-01 1:18 ` KOSAKI Motohiro
2009-07-01 1:18 ` KOSAKI Motohiro
2009-07-01 2:13 ` Rik van Riel
2009-07-01 2:13 ` Rik van Riel
2009-07-01 2:16 ` Wu Fengguang
2009-07-01 2:16 ` Wu Fengguang
2009-07-01 2:26 ` Wu Fengguang
2009-07-01 2:26 ` Wu Fengguang
2009-07-01 2:51 ` KOSAKI Motohiro
2009-07-01 2:51 ` KOSAKI Motohiro
2009-07-01 2:57 ` Rik van Riel
2009-07-01 2:57 ` Rik van Riel
2009-07-01 4:06 ` Wu Fengguang
2009-07-01 4:06 ` Wu Fengguang
2009-07-01 4:18 ` KOSAKI Motohiro
2009-07-01 4:18 ` KOSAKI Motohiro
2009-07-01 4:25 ` Wu Fengguang
2009-07-01 4:25 ` Wu Fengguang
2009-07-01 4:30 ` KOSAKI Motohiro
2009-07-01 4:30 ` KOSAKI Motohiro
2009-07-01 11:27 ` Wu Fengguang
2009-07-01 11:27 ` Wu Fengguang
2009-07-05 9:55 ` Wu Fengguang
2009-07-05 9:55 ` Wu Fengguang
2009-07-05 10:38 ` KOSAKI Motohiro
2009-07-05 10:38 ` KOSAKI Motohiro
2009-07-05 10:51 ` Wu Fengguang
2009-07-05 10:51 ` Wu Fengguang
2009-07-01 3:54 ` Wu Fengguang
2009-07-01 3:54 ` Wu Fengguang
2009-06-29 15:27 ` David Howells
2009-06-29 15:27 ` David Howells
2009-06-29 16:07 ` Mel Gorman
2009-06-29 16:07 ` Mel Gorman
2009-06-30 4:07 ` Minchan Kim
2009-06-30 4:07 ` Minchan Kim
2009-06-30 9:22 ` Mel Gorman
2009-06-30 9:22 ` Mel Gorman
2009-06-30 9:30 ` Minchan Kim
2009-06-30 9:30 ` Minchan Kim
2009-06-30 14:00 ` Minchan Kim
2009-06-30 14:00 ` Minchan Kim
2009-06-30 19:57 ` David Howells
2009-06-30 19:57 ` David Howells
2009-07-02 7:41 ` Minchan Kim
2009-07-02 7:41 ` Minchan Kim
2009-07-02 7:44 ` Minchan Kim
2009-07-02 7:44 ` Minchan Kim
2009-07-02 12:43 ` Wu Fengguang
2009-07-02 12:43 ` Wu Fengguang
2009-07-02 14:08 ` Minchan Kim
2009-07-02 14:08 ` Minchan Kim
2009-06-28 14:49 ` KOSAKI Motohiro
2009-06-28 14:49 ` KOSAKI Motohiro
2009-06-28 15:04 ` Wu Fengguang
2009-06-28 15:04 ` Wu Fengguang
2009-06-28 16:47 ` Minchan Kim
2009-06-28 16:47 ` Minchan Kim
2009-06-29 7:48 ` KOSAKI Motohiro
2009-06-29 7:48 ` KOSAKI Motohiro
2009-06-29 9:32 ` Minchan Kim
2009-06-29 9:32 ` Minchan Kim
2009-06-29 12:43 ` David Howells
2009-06-29 12:43 ` David Howells
2009-06-29 12:59 ` Wu Fengguang
2009-06-29 12:59 ` Wu Fengguang
2009-06-29 16:57 ` Andrew Morton
2009-06-29 16:57 ` Andrew Morton
2009-06-29 18:54 ` KOSAKI Motohiro
2009-06-29 18:54 ` KOSAKI Motohiro
2009-06-29 19:08 ` KOSAKI Motohiro
2009-06-29 19:08 ` KOSAKI Motohiro
2009-06-19 5:27 ` [PATCH 0/3] make mapped executable pages the first class citizen Wu Fengguang
2009-06-19 5:27 ` Wu Fengguang
2009-06-19 5:24 ` Wu Fengguang
2009-06-19 5:24 ` Wu Fengguang
2009-06-19 5:58 ` Wu Fengguang
2009-06-19 5:58 ` Wu Fengguang
2009-06-19 8:06 ` David Howells
2009-06-19 8:06 ` David Howells
-- strict thread matches above, loose matches on Subject: below --
2009-05-16 9:00 Wu Fengguang
2009-05-16 9:00 ` Wu Fengguang
2009-05-16 14:56 ` Peter Zijlstra
2009-06-17 21:11 ` Jesse Barnes
2009-06-17 21:37 ` Jesse Barnes
2009-06-18 1:25 ` Wu Fengguang
2009-06-18 1:25 ` Wu Fengguang
2009-06-18 16:33 ` Jesse Barnes
2009-06-18 16:33 ` Jesse Barnes
2009-06-19 9:00 ` Wu, Fengguang
2009-06-19 9:00 ` Wu, Fengguang
2009-06-19 9:04 ` Peter Zijlstra
2009-06-19 9:04 ` Peter Zijlstra
2009-06-19 9:32 ` Wu Fengguang
2009-06-19 9:32 ` Wu Fengguang
2009-06-19 16:43 ` Jesse Barnes
2009-06-19 16:43 ` Jesse Barnes
2009-07-04 1:27 ` Roger WANG
2009-07-04 1:27 ` Roger WANG
2009-07-06 17:38 ` Jesse Barnes
2009-07-06 17:38 ` Jesse Barnes
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