From: Eric B Munson <emunson@mgebm.net>
To: Michel Lespinasse <walken@google.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Rik van Riel <riel@redhat.com>,
Balbir Singh <bsingharora@gmail.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrea Arcangeli <aarcange@redhat.com>,
Johannes Weiner <jweiner@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Hugh Dickins <hughd@google.com>, Michael Wolf <mjwolf@us.ibm.com>
Subject: Re: [PATCH 0/9] V2: idle page tracking / working set estimation
Date: Mon, 3 Oct 2011 11:06:20 -0400 [thread overview]
Message-ID: <20111003150619.GA12778@mgebm.net> (raw)
In-Reply-To: <CANN689EN8KsBZj_9cABjJoZNou_UegZ8uqB4Lx=uM-B_4aCd7A@mail.gmail.com>
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On Fri, 30 Sep 2011, Michel Lespinasse wrote:
> On Fri, Sep 30, 2011 at 11:19 AM, Eric B Munson <emunson@mgebm.net> wrote:
> > I am able to recreate on a second desktop I have here (same model CPU but a
> > different MB so I am fairly sure it isn't dying hardware). It looks to me like
> > a CPU softlocks and it stalls the process active there, so most recently that
> > was XOrg. The machine lets me login via ssh for a few minutes, but things like
> > ps and cat or /proc files will start to work and give some output but hang.
> > I cannot call reboot, nor can I sync the fs and reboot via SysRq. My next step
> > is to setup a netconsole to see if anything comes out in the syslog that I
> > cannot see.
>
> I haven't had time to try & reproduce locally yet (apologies - things
> have been coming up at me).
>
> But a prime suspect would be a bad interaction with
> CONFIG_MEMORY_HOTPLUG, as Kamezama remarked in his reply to patch 4. I
> think this could be the most likely cause of what you're observing.
>
CONFIG_MEMORY_HOTPLUG seems to be the responsible party here, I disabled it in
my config and have been able to build 6 kernels straight without a hang.
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prev parent reply other threads:[~2011-10-03 15:06 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-28 0:48 Michel Lespinasse
2011-09-28 0:48 ` [PATCH 1/9] page_referenced: replace vm_flags parameter with struct page_referenced_info Michel Lespinasse
2011-09-28 6:28 ` KAMEZAWA Hiroyuki
2011-09-28 0:49 ` [PATCH 2/9] kstaled: documentation and config option Michel Lespinasse
2011-09-28 6:53 ` KAMEZAWA Hiroyuki
2011-09-28 23:48 ` Michel Lespinasse
2011-09-29 5:40 ` KAMEZAWA Hiroyuki
2011-09-28 0:49 ` [PATCH 3/9] kstaled: page_referenced_kstaled() and supporting infrastructure Michel Lespinasse
2011-09-28 7:18 ` KAMEZAWA Hiroyuki
2011-09-29 0:09 ` Michel Lespinasse
2011-09-28 0:49 ` [PATCH 4/9] kstaled: minimalistic implementation Michel Lespinasse
2011-09-28 7:41 ` Peter Zijlstra
2011-09-28 8:01 ` Michel Lespinasse
2011-09-28 10:26 ` Peter Zijlstra
2011-09-28 8:00 ` KAMEZAWA Hiroyuki
2012-02-20 9:17 ` Zhu Yanhai
2011-09-28 0:49 ` [PATCH 5/9] kstaled: skip non-RAM regions Michel Lespinasse
2011-09-28 8:03 ` KAMEZAWA Hiroyuki
2011-09-28 0:49 ` [PATCH 6/9] kstaled: rate limit pages scanned per second Michel Lespinasse
2011-09-28 8:13 ` KAMEZAWA Hiroyuki
2011-09-28 8:19 ` Michel Lespinasse
2011-09-28 8:59 ` KAMEZAWA Hiroyuki
2011-10-14 1:25 ` Michel Lespinasse
2011-10-14 4:54 ` KAMEZAWA Hiroyuki
2011-09-28 0:49 ` [PATCH 7/9] kstaled: add histogram sampling functionality Michel Lespinasse
2011-09-28 8:22 ` KAMEZAWA Hiroyuki
2011-09-28 0:49 ` [PATCH 8/9] kstaled: add incrementally updating stale page count Michel Lespinasse
2011-09-28 0:49 ` [PATCH 9/9] kstaled: export PG_stale in /proc/kpageflags Michel Lespinasse
2011-09-29 16:43 ` [PATCH 0/9] V2: idle page tracking / working set estimation Eric B Munson
2011-09-29 20:25 ` Michel Lespinasse
2011-09-29 21:18 ` Eric B Munson
2011-09-30 18:19 ` Eric B Munson
2011-09-30 21:16 ` Michel Lespinasse
2011-09-30 21:40 ` Eric B Munson
2011-10-03 15:06 ` Eric B Munson [this message]
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