From: Michal Hocko <mhocko@kernel.org>
To: lkml@pengaru.com
Cc: Gerhard Wiesinger <lists@wiesinger.com>,
Minchan Kim <minchan@kernel.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: Still OOM problems with 4.9er/4.10er kernels
Date: Thu, 16 Mar 2017 10:08:44 +0100 [thread overview]
Message-ID: <20170316090844.GG30501@dhcp22.suse.cz> (raw)
In-Reply-To: <20170316084733.GP802@shells.gnugeneration.com>
On Thu 16-03-17 01:47:33, lkml@pengaru.com wrote:
[...]
> While on the topic of understanding allocation stalls, Philip Freeman recently
> mailed linux-kernel with a similar report, and in his case there are plenty of
> page cache pages. It was also a GFP_HIGHUSER_MOVABLE 0-order allocation.
care to point me to the report?
> I'm no MM expert, but it appears a bit broken for such a low-order allocation
> to stall on the order of 10 seconds when there's plenty of reclaimable pages,
> in addition to mostly unused and abundant swap space on SSD.
yes this might indeed signal a problem.
--
Michal Hocko
SUSE Labs
WARNING: multiple messages have this Message-ID (diff)
From: Michal Hocko <mhocko@kernel.org>
To: lkml@pengaru.com
Cc: Gerhard Wiesinger <lists@wiesinger.com>,
Minchan Kim <minchan@kernel.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: Still OOM problems with 4.9er/4.10er kernels
Date: Thu, 16 Mar 2017 10:08:44 +0100 [thread overview]
Message-ID: <20170316090844.GG30501@dhcp22.suse.cz> (raw)
In-Reply-To: <20170316084733.GP802@shells.gnugeneration.com>
On Thu 16-03-17 01:47:33, lkml@pengaru.com wrote:
[...]
> While on the topic of understanding allocation stalls, Philip Freeman recently
> mailed linux-kernel with a similar report, and in his case there are plenty of
> page cache pages. It was also a GFP_HIGHUSER_MOVABLE 0-order allocation.
care to point me to the report?
> I'm no MM expert, but it appears a bit broken for such a low-order allocation
> to stall on the order of 10 seconds when there's plenty of reclaimable pages,
> in addition to mostly unused and abundant swap space on SSD.
yes this might indeed signal a problem.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-03-16 9:08 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-30 7:10 Still OOM problems with 4.9er kernels Gerhard Wiesinger
2016-11-30 7:20 ` Gerhard Wiesinger
2016-12-09 7:06 ` Gerhard Wiesinger
2016-12-09 13:40 ` Michal Hocko
2016-12-09 13:40 ` Michal Hocko
2016-12-09 15:52 ` Gerhard Wiesinger
2016-12-09 15:52 ` Gerhard Wiesinger
2016-12-09 15:58 ` Gerhard Wiesinger
2016-12-09 15:58 ` Gerhard Wiesinger
2016-12-09 16:09 ` Michal Hocko
2016-12-09 16:09 ` Michal Hocko
2016-12-09 16:58 ` Gerhard Wiesinger
2016-12-09 17:30 ` Michal Hocko
2016-12-09 17:30 ` Michal Hocko
2016-12-09 18:01 ` Gerhard Wiesinger
2016-12-09 18:01 ` Gerhard Wiesinger
2016-12-09 21:42 ` Vlastimil Babka
2016-12-09 21:42 ` Vlastimil Babka
2016-12-10 13:50 ` Gerhard Wiesinger
2016-12-10 13:50 ` Gerhard Wiesinger
2016-12-12 8:24 ` Michal Hocko
2016-12-12 8:24 ` Michal Hocko
2016-12-23 2:55 ` Minchan Kim
2016-12-23 2:55 ` Minchan Kim
2017-01-01 17:20 ` Gerhard Wiesinger
2017-01-01 17:20 ` Gerhard Wiesinger
2017-01-04 8:40 ` Gerhard Wiesinger
2017-01-04 9:11 ` Michal Hocko
2017-01-04 9:11 ` Michal Hocko
2017-02-26 8:40 ` Still OOM problems with 4.9er/4.10er kernels Gerhard Wiesinger
2017-02-27 8:27 ` Michal Hocko
2017-02-27 8:27 ` Michal Hocko
2017-02-28 6:06 ` Gerhard Wiesinger
2017-02-28 6:06 ` Gerhard Wiesinger
2017-02-28 8:14 ` Michal Hocko
2017-02-28 8:14 ` Michal Hocko
2017-02-27 9:02 ` Minchan Kim
2017-02-27 9:02 ` Minchan Kim
2017-02-27 9:44 ` Michal Hocko
2017-02-27 9:44 ` Michal Hocko
2017-02-28 5:17 ` Minchan Kim
2017-02-28 5:17 ` Minchan Kim
2017-02-28 8:12 ` Michal Hocko
2017-02-28 8:12 ` Michal Hocko
2017-03-02 7:17 ` Minchan Kim
2017-03-02 7:17 ` Minchan Kim
2017-03-16 6:38 ` Gerhard Wiesinger
2017-03-16 6:38 ` Gerhard Wiesinger
2017-03-16 8:27 ` Michal Hocko
2017-03-16 8:27 ` Michal Hocko
2017-03-16 8:47 ` lkml
2017-03-16 8:47 ` lkml
2017-03-16 9:08 ` Michal Hocko [this message]
2017-03-16 9:08 ` Michal Hocko
2017-03-16 9:23 ` lkml
2017-03-16 9:23 ` lkml
2017-03-16 9:39 ` Michal Hocko
2017-03-16 9:39 ` Michal Hocko
2017-03-17 16:37 ` Gerhard Wiesinger
2017-03-17 16:37 ` Gerhard Wiesinger
2017-03-17 17:13 ` Michal Hocko
2017-03-17 17:13 ` Michal Hocko
2017-03-17 20:08 ` Gerhard Wiesinger
2017-03-17 20:08 ` Gerhard Wiesinger
2017-03-19 8:17 ` Gerhard Wiesinger
2017-03-19 8:17 ` Gerhard Wiesinger
2017-03-20 1:54 ` Tetsuo Handa
2017-03-20 1:54 ` Tetsuo Handa
2017-03-19 15:18 ` Michal Hocko
2017-03-19 15:18 ` Michal Hocko
2017-03-19 16:02 ` Gerhard Wiesinger
2017-03-19 16:02 ` Gerhard Wiesinger
2017-03-20 3:05 ` Mike Galbraith
2017-03-20 3:05 ` Mike Galbraith
2017-03-21 5:59 ` Gerhard Wiesinger
2017-03-21 5:59 ` Gerhard Wiesinger
2017-03-21 7:13 ` Mike Galbraith
2017-03-21 7:13 ` Mike Galbraith
2017-03-23 7:16 ` Gerhard Wiesinger
2017-03-23 7:16 ` Gerhard Wiesinger
2017-03-23 8:38 ` Mike Galbraith
2017-03-23 8:38 ` Mike Galbraith
2017-03-23 14:46 ` Tetsuo Handa
2017-03-23 14:46 ` Tetsuo Handa
2017-03-26 8:36 ` Gerhard Wiesinger
2017-03-26 8:36 ` Gerhard Wiesinger
2016-12-09 16:03 ` Still OOM problems with 4.9er kernels Gerhard Wiesinger
2016-12-09 16:03 ` Gerhard Wiesinger
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