From: "azurIt" <azurit@pobox.sk>
To: "Michal Hocko" <mhocko@suse.cz>
Cc: "Johannes Weiner" <hannes@cmpxchg.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"David Rientjes" <rientjes@google.com>,
"KAMEZAWA Hiroyuki" <kamezawa.hiroyu@jp.fujitsu.com>,
"KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com>,
linux-mm@kvack.org, cgroups@vger.kernel.org, x86@kernel.org,
linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [patch 0/7] improve memcg oom killer robustness v2
Date: Thu, 05 Sep 2013 12:17:00 +0200 [thread overview]
Message-ID: <20130905121700.546B5881@pobox.sk> (raw)
In-Reply-To: <20130905095331.GA9702@dhcp22.suse.cz>
>[...]
>> My script detected another freezed cgroup today, sending stacks. Is
>> there anything interesting?
>
>3 tasks are sleeping and waiting for somebody to take an action to
>resolve memcg OOM. The memcg oom killer is enabled for that group? If
>yes, which task has been selected to be killed? You can find that in oom
>report in dmesg.
>
>I can see a way how this might happen. If the killed task happened to
>allocate a memory while it is exiting then it would get to the oom
>condition again without freeing any memory so nobody waiting on the
>memcg_oom_waitq gets woken. We have a report like that:
>https://lkml.org/lkml/2013/7/31/94
>
>The issue got silent in the meantime so it is time to wake it up.
>It would be definitely good to see what happened in your case though.
>If any of the bellow tasks was the oom victim then it is very probable
>this is the same issue.
Here it is:
http://watchdog.sk/lkml/kern5.log
Processes were killed by my script at about 11:05:35.
azur
WARNING: multiple messages have this Message-ID (diff)
From: "azurIt" <azurit@pobox.sk>
To: "Michal Hocko" <mhocko@suse.cz>
Cc: "Johannes Weiner" <hannes@cmpxchg.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"David Rientjes" <rientjes@google.com>,
"KAMEZAWA Hiroyuki" <kamezawa.hiroyu@jp.fujitsu.com>,
"KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com>,
linux-mm@kvack.org, cgroups@vger.kernel.org, x86@kernel.org,
linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [patch 0/7] improve memcg oom killer robustness v2
Date: Thu, 05 Sep 2013 12:17:00 +0200 [thread overview]
Message-ID: <20130905121700.546B5881@pobox.sk> (raw)
In-Reply-To: <20130905095331.GA9702@dhcp22.suse.cz>
>[...]
>> My script detected another freezed cgroup today, sending stacks. Is
>> there anything interesting?
>
>3 tasks are sleeping and waiting for somebody to take an action to
>resolve memcg OOM. The memcg oom killer is enabled for that group? If
>yes, which task has been selected to be killed? You can find that in oom
>report in dmesg.
>
>I can see a way how this might happen. If the killed task happened to
>allocate a memory while it is exiting then it would get to the oom
>condition again without freeing any memory so nobody waiting on the
>memcg_oom_waitq gets woken. We have a report like that:
>https://lkml.org/lkml/2013/7/31/94
>
>The issue got silent in the meantime so it is time to wake it up.
>It would be definitely good to see what happened in your case though.
>If any of the bellow tasks was the oom victim then it is very probable
>this is the same issue.
Here it is:
http://watchdog.sk/lkml/kern5.log
Processes were killed by my script at about 11:05:35.
azur
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next prev parent reply other threads:[~2013-09-05 10:17 UTC|newest]
Thread overview: 227+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-03 16:59 [patch 0/7] improve memcg oom killer robustness v2 Johannes Weiner
2013-08-03 16:59 ` Johannes Weiner
2013-08-03 16:59 ` [patch 1/7] arch: mm: remove obsolete init OOM protection Johannes Weiner
2013-08-03 16:59 ` Johannes Weiner
2013-08-06 6:34 ` Vineet Gupta
2013-08-06 6:34 ` Vineet Gupta
2013-08-06 6:34 ` Vineet Gupta
2013-08-03 16:59 ` [patch 2/7] arch: mm: do not invoke OOM killer on kernel fault OOM Johannes Weiner
2013-08-03 16:59 ` Johannes Weiner
2013-08-03 16:59 ` [patch 3/7] arch: mm: pass userspace fault flag to generic fault handler Johannes Weiner
2013-08-03 16:59 ` Johannes Weiner
2013-08-05 22:06 ` Andrew Morton
2013-08-05 22:06 ` Andrew Morton
2013-08-05 22:25 ` Johannes Weiner
2013-08-05 22:25 ` Johannes Weiner
2013-08-03 16:59 ` [patch 4/7] x86: finish user fault error path with fatal signal Johannes Weiner
2013-08-03 16:59 ` Johannes Weiner
2013-08-03 16:59 ` [patch 5/7] mm: memcg: enable memcg OOM killer only for user faults Johannes Weiner
2013-08-03 16:59 ` Johannes Weiner
2013-08-05 9:18 ` Michal Hocko
2013-08-05 9:18 ` Michal Hocko
2013-08-03 16:59 ` [patch 6/7] mm: memcg: rework and document OOM waiting and wakeup Johannes Weiner
2013-08-03 16:59 ` Johannes Weiner
2013-08-03 17:00 ` [patch 7/7] mm: memcg: do not trap chargers with full callstack on OOM Johannes Weiner
2013-08-03 17:00 ` Johannes Weiner
2013-08-05 9:54 ` Michal Hocko
2013-08-05 9:54 ` Michal Hocko
2013-08-05 9:54 ` Michal Hocko
2013-08-05 20:56 ` Johannes Weiner
2013-08-05 20:56 ` Johannes Weiner
2013-08-03 17:08 ` [patch 0/7] improve memcg oom killer robustness v2 Johannes Weiner
2013-08-03 17:08 ` Johannes Weiner
2013-08-09 9:06 ` azurIt
2013-08-09 9:06 ` azurIt
2013-08-09 9:06 ` azurIt
2013-08-30 19:58 ` azurIt
2013-08-30 19:58 ` azurIt
2013-09-02 10:38 ` azurIt
2013-09-02 10:38 ` azurIt
2013-09-03 20:48 ` Johannes Weiner
2013-09-03 20:48 ` Johannes Weiner
2013-09-04 7:53 ` azurIt
2013-09-04 7:53 ` azurIt
2013-09-04 7:53 ` azurIt
2013-09-04 7:53 ` azurIt
2013-09-04 8:18 ` azurIt
2013-09-04 8:18 ` azurIt
2013-09-05 11:54 ` Johannes Weiner
2013-09-05 11:54 ` Johannes Weiner
2013-09-05 12:43 ` Michal Hocko
2013-09-05 12:43 ` Michal Hocko
2013-09-05 16:18 ` Johannes Weiner
2013-09-05 16:18 ` Johannes Weiner
2013-09-09 12:36 ` Michal Hocko
2013-09-09 12:36 ` Michal Hocko
2013-09-09 12:56 ` Michal Hocko
2013-09-09 12:56 ` Michal Hocko
2013-09-12 12:59 ` Johannes Weiner
2013-09-12 12:59 ` Johannes Weiner
2013-09-16 14:03 ` Michal Hocko
2013-09-16 14:03 ` Michal Hocko
2013-09-16 14:03 ` Michal Hocko
2013-09-05 13:24 ` Michal Hocko
2013-09-05 13:24 ` Michal Hocko
2013-09-09 13:10 ` azurIt
2013-09-09 13:10 ` azurIt
2013-09-09 17:28 ` Johannes Weiner
2013-09-09 17:28 ` Johannes Weiner
2013-09-09 19:59 ` azurIt
2013-09-09 19:59 ` azurIt
2013-09-09 20:12 ` Johannes Weiner
2013-09-09 20:12 ` Johannes Weiner
2013-09-09 20:18 ` azurIt
2013-09-09 20:18 ` azurIt
2013-09-09 21:08 ` azurIt
2013-09-09 21:08 ` azurIt
2013-09-10 18:13 ` azurIt
2013-09-10 18:13 ` azurIt
2013-09-10 18:37 ` Johannes Weiner
2013-09-10 18:37 ` Johannes Weiner
2013-09-10 19:32 ` azurIt
2013-09-10 19:32 ` azurIt
2013-09-10 20:12 ` Johannes Weiner
2013-09-10 20:12 ` Johannes Weiner
2013-09-10 21:08 ` azurIt
2013-09-10 21:08 ` azurIt
2013-09-10 21:08 ` azurIt
2013-09-10 21:18 ` Johannes Weiner
2013-09-10 21:18 ` Johannes Weiner
2013-09-10 21:32 ` azurIt
2013-09-10 21:32 ` azurIt
2013-09-10 22:03 ` Johannes Weiner
2013-09-10 22:03 ` Johannes Weiner
2013-09-11 12:33 ` azurIt
2013-09-11 12:33 ` azurIt
2013-09-11 18:03 ` Johannes Weiner
2013-09-11 18:03 ` Johannes Weiner
2013-09-11 18:03 ` Johannes Weiner
2013-09-11 18:54 ` azurIt
2013-09-11 18:54 ` azurIt
2013-09-11 19:11 ` Johannes Weiner
2013-09-11 19:11 ` Johannes Weiner
2013-09-11 19:41 ` azurIt
2013-09-11 19:41 ` azurIt
2013-09-11 20:04 ` Johannes Weiner
2013-09-11 20:04 ` Johannes Weiner
2013-09-14 10:48 ` azurIt
2013-09-14 10:48 ` azurIt
2013-09-16 13:40 ` Michal Hocko
2013-09-16 13:40 ` Michal Hocko
2013-09-16 14:01 ` azurIt
2013-09-16 14:01 ` azurIt
2013-09-16 14:06 ` Michal Hocko
2013-09-16 14:06 ` Michal Hocko
2013-09-16 14:13 ` azurIt
2013-09-16 14:13 ` azurIt
2013-09-16 14:13 ` azurIt
2013-09-16 14:57 ` Michal Hocko
2013-09-16 14:57 ` Michal Hocko
2013-09-16 15:05 ` azurIt
2013-09-16 15:05 ` azurIt
2013-09-16 15:17 ` Johannes Weiner
2013-09-16 15:17 ` Johannes Weiner
2013-09-16 15:17 ` Johannes Weiner
2013-09-16 15:24 ` azurIt
2013-09-16 15:24 ` azurIt
2013-09-16 15:25 ` Michal Hocko
2013-09-16 15:25 ` Michal Hocko
2013-09-16 15:40 ` azurIt
2013-09-16 15:40 ` azurIt
2013-09-16 20:52 ` azurIt
2013-09-16 20:52 ` azurIt
2013-09-17 0:02 ` Johannes Weiner
2013-09-17 0:02 ` Johannes Weiner
2013-09-17 11:15 ` azurIt
2013-09-17 11:15 ` azurIt
2013-09-17 11:15 ` azurIt
2013-09-17 14:10 ` Michal Hocko
2013-09-17 14:10 ` Michal Hocko
2013-09-18 14:03 ` azurIt
2013-09-18 14:03 ` azurIt
2013-09-18 14:03 ` azurIt
2013-09-18 14:24 ` Michal Hocko
2013-09-18 14:24 ` Michal Hocko
2013-09-18 14:33 ` azurIt
2013-09-18 14:33 ` azurIt
2013-09-18 14:42 ` Michal Hocko
2013-09-18 14:42 ` Michal Hocko
2013-09-18 14:42 ` Michal Hocko
2013-09-18 18:02 ` azurIt
2013-09-18 18:02 ` azurIt
2013-09-18 18:36 ` Michal Hocko
2013-09-18 18:36 ` Michal Hocko
2013-09-18 18:36 ` Michal Hocko
2013-09-18 18:04 ` Johannes Weiner
2013-09-18 18:04 ` Johannes Weiner
2013-09-18 18:19 ` Johannes Weiner
2013-09-18 18:19 ` Johannes Weiner
2013-09-18 19:55 ` Johannes Weiner
2013-09-18 19:55 ` Johannes Weiner
2013-09-18 19:55 ` Johannes Weiner
2013-09-18 20:52 ` azurIt
2013-09-18 20:52 ` azurIt
2013-09-18 20:52 ` azurIt
2013-09-25 7:26 ` azurIt
2013-09-25 7:26 ` azurIt
2013-09-25 7:26 ` azurIt
2013-09-26 16:54 ` azurIt
2013-09-26 16:54 ` azurIt
2013-09-26 16:54 ` azurIt
2013-09-26 19:27 ` Johannes Weiner
2013-09-26 19:27 ` Johannes Weiner
2013-09-27 2:04 ` azurIt
2013-09-27 2:04 ` azurIt
2013-09-27 2:04 ` azurIt
2013-09-27 2:04 ` azurIt
2013-10-07 11:01 ` azurIt
2013-10-07 11:01 ` azurIt
2013-10-07 11:01 ` azurIt
2013-10-07 11:01 ` azurIt
2013-10-07 19:23 ` Johannes Weiner
2013-10-07 19:23 ` Johannes Weiner
2013-10-09 18:44 ` azurIt
2013-10-09 18:44 ` azurIt
2013-10-09 18:44 ` azurIt
2013-10-10 0:14 ` Johannes Weiner
2013-10-10 0:14 ` Johannes Weiner
2013-10-10 0:14 ` Johannes Weiner
2013-10-10 22:59 ` azurIt
2013-10-10 22:59 ` azurIt
2013-10-10 22:59 ` azurIt
2013-09-17 11:20 ` azurIt
2013-09-17 11:20 ` azurIt
2013-09-16 10:22 ` azurIt
2013-09-16 10:22 ` azurIt
2013-09-04 9:45 ` azurIt
2013-09-04 9:45 ` azurIt
2013-09-04 11:57 ` Michal Hocko
2013-09-04 11:57 ` Michal Hocko
2013-09-04 12:10 ` azurIt
2013-09-04 12:10 ` azurIt
2013-09-04 12:10 ` azurIt
2013-09-04 12:26 ` Michal Hocko
2013-09-04 12:26 ` Michal Hocko
2013-09-04 12:26 ` Michal Hocko
2013-09-04 12:39 ` azurIt
2013-09-04 12:39 ` azurIt
2013-09-05 9:14 ` azurIt
2013-09-05 9:14 ` azurIt
2013-09-05 9:53 ` Michal Hocko
2013-09-05 9:53 ` Michal Hocko
2013-09-05 10:17 ` azurIt [this message]
2013-09-05 10:17 ` azurIt
2013-09-05 11:17 ` Michal Hocko
2013-09-05 11:17 ` Michal Hocko
2013-09-05 11:17 ` Michal Hocko
2013-09-05 11:47 ` azurIt
2013-09-05 11:47 ` azurIt
2013-09-05 12:03 ` Michal Hocko
2013-09-05 12:03 ` Michal Hocko
2013-09-05 12:33 ` azurIt
2013-09-05 12:33 ` azurIt
2013-09-05 12:33 ` azurIt
2013-09-05 12:45 ` Michal Hocko
2013-09-05 12:45 ` Michal Hocko
2013-09-05 13:00 ` azurIt
2013-09-05 13:00 ` azurIt
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