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: Fri, 30 Sep 2011 14:19:14 -0400 [thread overview]
Message-ID: <20110930181914.GA17817@mgebm.net> (raw)
In-Reply-To: <4186d5662b3fb21af1b45f8a335414d3@mgebm.net>
[-- Attachment #1: Type: text/plain, Size: 1842 bytes --]
On Thu, 29 Sep 2011, Eric B Munson wrote:
> On Thu, 29 Sep 2011 13:25:00 -0700, Michel Lespinasse wrote:
> >On Thu, Sep 29, 2011 at 9:43 AM, Eric B Munson <emunson@mgebm.net>
> >wrote:
> >>I have been trying to test these patches since yesterday
> >>afternoon. When my
> >>machine is idle, they behave fine. I started looking at
> >>performance to make
> >>sure they were a big regression by testing kernel builds with
> >>the scanner
> >>disabled, and then enabled (set to 120 seconds). The scanner
> >>disabled builds
> >>work fine, but with the scanner enabled the second time I build
> >>my kernel hangs
> >>my machine every time. Unfortunately, I do not have any more
> >>information than
> >>that for you at the moment. My next step is to try the same
> >>tests in qemu to
> >>see if I can get more state information when the kernel hangs.
> >
> >Could you please send me your .config file ? Also, did you apply the
> >patches on top of straight v3.0 and what is your machine like ?
> >
> >Thanks,
>
>
> My .config will come separately to you. I applied the patches to
> Linus' master branch as of yesterday. My machine is a single Xeon
> 5690 with 12G of ram (do you need more details than that?)
>
> Thanks,
> Eric
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.
Eric
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 490 bytes --]
next prev parent reply other threads:[~2011-09-30 18:19 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 [this message]
2011-09-30 21:16 ` Michel Lespinasse
2011-09-30 21:40 ` Eric B Munson
2011-10-03 15:06 ` Eric B Munson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110930181914.GA17817@mgebm.net \
--to=emunson@mgebm.net \
--cc=a.p.zijlstra@chello.nl \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=bsingharora@gmail.com \
--cc=dave@linux.vnet.ibm.com \
--cc=hughd@google.com \
--cc=jweiner@redhat.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=kosaki.motohiro@jp.fujitsu.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mjwolf@us.ibm.com \
--cc=riel@redhat.com \
--cc=walken@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox