From: Dave Jones <davej@redhat.com>
To: Andrew Morton <akpm@osdl.org>
Cc: AChittenden@bluearc.com, linux-kernel@vger.kernel.org,
lwoodman@redhat.com
Subject: Re: Out of Memory: Killed process 16498 (java).
Date: Thu, 19 Jan 2006 20:28:44 -0500 [thread overview]
Message-ID: <20060120012844.GE3798@redhat.com> (raw)
In-Reply-To: <20060119170305.2e8ae353.akpm@osdl.org>
On Thu, Jan 19, 2006 at 05:03:05PM -0800, Andrew Morton wrote:
> This is the bypass-the-batching patch. It's a reasonable thing to do, but I'd
> just do it unconditionally and remove the code which clears
> ->all_unreclaimable from free_pages_bulk(), if possible.
>
> Has this patch been shown to have any effect? If so, what was it, and
> under what conditions?
Larry originally came up with the patch for our RHEL4 2.6.9 kernel,
after customers were hitting OOM under some heavy workload he can
probably recall better than I can.
iirc it didn't solve the users OOM entirely, but it does make their workload
run longer before the kill happens.
A little while later, after Fedora users started reporting oom kills,
I forward-ported it to 2.6.14, and threw it out in an update.
The Fedora user in the bug report
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=175173
who on x86-64 with 5GB saw zone_dma exhausted saw a similar result,
delays the kill, but it does still happen.
Hmm.
Dave
next prev parent reply other threads:[~2006-01-20 1:29 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-19 15:11 Out of Memory: Killed process 16498 (java) Andy Chittenden
2006-01-19 19:48 ` Dave Jones
2006-01-19 22:15 ` Andrew Morton
2006-01-20 8:12 ` Jens Axboe
2006-01-20 8:23 ` Andrew Morton
2006-01-20 12:08 ` Jens Axboe
2006-01-20 12:17 ` Andrew Morton
2006-01-20 12:28 ` Jens Axboe
2006-01-20 12:51 ` Andrew Morton
2006-01-20 1:03 ` Andrew Morton
2006-01-20 1:28 ` Dave Jones [this message]
2006-01-20 1:49 ` Andrew Morton
2006-01-21 20:00 ` Dan Aloni
-- strict thread matches above, loose matches on Subject: below --
2006-01-27 11:53 Andy Chittenden
2006-01-27 14:21 ` Jens Axboe
2006-01-27 14:39 ` Anton Altaparmakov
2006-01-23 10:03 Andy Chittenden
2006-01-23 10:11 ` Jens Axboe
2006-01-21 21:47 Andy Chittenden
2006-01-23 9:27 ` Jens Axboe
[not found] <89E85E0168AD994693B574C80EDB9C27035561DE@uk-email.terastack.bluearc.com>
2006-01-20 17:39 ` Jens Axboe
[not found] <89E85E0168AD994693B574C80EDB9C27035560E4@uk-email.terastack.bluearc.com>
2006-01-20 12:37 ` Larry Woodman
[not found] <89E85E0168AD994693B574C80EDB9C2703555F8E@uk-email.terastack.bluearc.com>
2006-01-19 9:44 ` Andrew Morton
2006-01-19 9:40 Andy Chittenden
2006-01-19 9:41 ` Con Kolivas
2006-01-19 8:43 Andy Chittenden
2006-01-19 8:56 ` Andrew Morton
2006-01-19 9:36 ` Con Kolivas
2006-01-19 20:54 ` Martin Bligh
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