From: Dhaval Giani <dhaval-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Dmitry Adamushko
<dmitry.adamushko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Peter Zijlstra
<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
vatsa-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org,
"containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org"
<containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org>,
Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Subject: Re: Hang with fair cgroup scheduler (reproducer is attached.)
Date: Fri, 14 Dec 2007 19:45:28 +0530 [thread overview]
Message-ID: <20071214141528.GA6161@linux.vnet.ibm.com> (raw)
In-Reply-To: <b647ffbd0712140447kfba5945ybde40f18653dd164-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Fri, Dec 14, 2007 at 01:47:13PM +0100, Dmitry Adamushko wrote:
> On 14/12/2007, KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org> wrote:
> > Here is much easier test.
> > (I'm sorry I'll be absent tomorrow.)
> >
> > the number of cpus is 8. ia64/NUMA.
> >
> > The hang occurs when the number of tasks is not smaller than available cpus.
> > Can be a hint ?
> >
> > [ ... ]
> >
> > [root@rhel51GA testpro]#./batech-test.sh
> > no hang.
> >
> > [root@rhel51GA testpro]#taskset 0f ./batech-test.sh
> > no hang
> >
> > [root@rhel51GA testpro]#taskset 03 ./batech-test.sh
> > hang.
>
> have you tried :
>
> [root@rhel51GA testpro]#taskset 01 ./batech-test.sh
>
> hang?
>
> just to be sure SMP does matter here (most likely yes, I guess).
>
NUMA? I am not able to reproduce it here locally on an x86 8 CPU box.
--
regards,
Dhaval
next prev parent reply other threads:[~2007-12-14 14:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-14 7:18 Hang with fair cgroup scheduler (reproducer is attached.) KAMEZAWA Hiroyuki
[not found] ` <20071214161834.034e6efe.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-14 8:17 ` KAMEZAWA Hiroyuki
[not found] ` <20071214171759.59f7ba57.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-14 9:49 ` Ingo Molnar
[not found] ` <20071214094909.GG11266-X9Un+BFzKDI@public.gmane.org>
2007-12-14 10:58 ` KAMEZAWA Hiroyuki
[not found] ` <20071214195837.0d3511db.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-14 11:48 ` Dhaval Giani
2007-12-14 12:47 ` Dmitry Adamushko
[not found] ` <20071214141528.GA6161-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-14 14:24 ` kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A
[not found] ` <20442799.1197642268756.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-14 15:36 ` Dhaval Giani
[not found] ` <20071214153607.GB23670-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-14 15:38 ` Dhaval Giani
[not found] ` <20071214153823.GC23670-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-14 16:25 ` Dmitry Adamushko
[not found] ` <b647ffbd0712140825h4f541be0xa7a7866e70b3af7a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-14 19:51 ` Dmitry Adamushko
[not found] ` <b647ffbd0712141151k697d9bbemda9a7e90515e4400-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-14 21:33 ` Steven Rostedt
[not found] ` <Pine.LNX.4.58.0712141614340.22005-f9ZlEuEWxVcI6MkJdU+c8EEOCMrvLtNR@public.gmane.org>
2007-12-15 10:22 ` Dmitry Adamushko
[not found] ` <b647ffbd0712150222p30cac9f9i772c2a2c4e05a4a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-15 10:50 ` Dhaval Giani
[not found] ` <20071215105036.GB26325-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-15 11:15 ` Dmitry Adamushko
2007-12-15 23:44 ` Dmitry Adamushko
[not found] ` <b647ffbd0712151544n2dfad101r2d306d393e8550ff-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-16 0:00 ` Dmitry Adamushko
[not found] ` <b647ffbd0712151600s14e3f355we5ee6348b4d484cc-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-16 4:28 ` Dhaval Giani
[not found] ` <20071216042821.GA8494-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2007-12-17 1:12 ` KAMEZAWA Hiroyuki
[not found] ` <20071217101245.76562518.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2007-12-17 14:45 ` Ingo Molnar
2007-12-16 8:55 ` Ingo Molnar
[not found] ` <20071216085559.GB20790-X9Un+BFzKDI@public.gmane.org>
2007-12-16 10:06 ` Dmitry Adamushko
[not found] ` <b647ffbd0712140447kfba5945ybde40f18653dd164-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-14 12:50 ` kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A
2007-12-14 14:15 ` Dhaval Giani [this message]
2007-12-14 9:48 ` Ingo Molnar
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