From: Sasha Levin <sasha.levin@oracle.com>
To: Kirill Tkhai <tkhai@yandex.ru>,
Michael wang <wangyun@linux.vnet.ibm.com>,
Peter Zijlstra <peterz@infradead.org>,
"ktkhai@parallels.com" <ktkhai@parallels.com>
Cc: Ingo Molnar <mingo@kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: sched: hang in migrate_swap
Date: Fri, 11 Apr 2014 10:32:13 -0400 [thread overview]
Message-ID: <5347FCED.8040706@oracle.com> (raw)
In-Reply-To: <336561397137116@web27h.yandex.ru>
On 04/10/2014 09:38 AM, Kirill Tkhai wrote:
> 10.04.2014, 11:00, "Michael wang" <wangyun@linux.vnet.ibm.com>:
>> > On 04/10/2014 11:31 AM, Sasha Levin wrote:
>> > [snip]
>> >
>>> >> I'd like to re-open this issue. It seems that something broke and I'm
>>> >> now seeing the same issues that have gone away 2 months with this patch
>>> >> again.
>> >
>> > A new mechanism has been designed to move the priority checking inside
>> > idle_balance(), including Kirill who is the designer ;-)
> Not sure, it's connected with my patch. But looks like, we forgot
> exactly stop class. Maybe this will help?
>
> [PATCH] sched: Checking for stop task appearance when balancing happens
>
> Just do it, like we do for other higher priority classes...
>
> Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
I've been running with this patch for the last two days and the hang
seems to be gone.
I'll leave it running on the weekend and will update again on Monday.
Thanks,
Sasha
next prev parent reply other threads:[~2014-04-11 14:32 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-19 18:08 sched: hang in migrate_swap Sasha Levin
2014-02-20 4:32 ` Michael wang
2014-02-21 16:43 ` Sasha Levin
2014-02-22 1:45 ` Michael wang
2014-02-24 3:23 ` Sasha Levin
2014-02-24 5:19 ` Michael wang
2014-02-24 5:54 ` Sasha Levin
2014-02-24 7:10 ` Peter Zijlstra
2014-02-24 10:14 ` Michael wang
2014-02-24 12:12 ` Peter Zijlstra
2014-02-24 13:10 ` Peter Zijlstra
2014-02-25 4:47 ` Michael wang
2014-02-25 10:49 ` Peter Zijlstra
2014-02-26 2:32 ` Michael wang
2014-02-24 18:21 ` Sasha Levin
2014-02-25 2:48 ` Michael wang
2014-02-25 11:03 ` Peter Zijlstra
2014-02-25 3:01 ` Michael wang
2014-02-27 13:33 ` [tip:sched/core] sched: Guarantee task priority in pick_next_task () tip-bot for Peter Zijlstra
2014-04-10 3:31 ` sched: hang in migrate_swap Sasha Levin
2014-04-10 6:59 ` Michael wang
2014-04-10 13:38 ` Kirill Tkhai
2014-04-11 14:32 ` Sasha Levin [this message]
2014-04-11 15:16 ` Kirill Tkhai
2014-05-12 18:48 ` Sasha Levin
2014-05-14 9:42 ` Kirill Tkhai
2014-05-14 10:13 ` Peter Zijlstra
2014-05-14 10:21 ` Kirill Tkhai
2014-05-14 10:26 ` Peter Zijlstra
2014-05-14 11:20 ` Peter Zijlstra
2015-06-15 19:38 ` Rafael David Tinoco
2015-06-15 19:47 ` Peter Zijlstra
2014-04-18 8:24 ` [tip:sched/urgent] sched: Check for stop task appearance when balancing happens tip-bot for Kirill Tkhai
2014-04-10 7:42 ` sched: hang in migrate_swap Peter Zijlstra
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