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From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: Larry Woodman <lwoodman@redhat.com>
Cc: Marco Nietz <m.nietz-mm@iplabs.de>,
	Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: oom-killer why ?
Date: Wed, 27 Aug 2008 08:02:14 +0530	[thread overview]
Message-ID: <48B4BCAE.7000906@linux.vnet.ibm.com> (raw)
In-Reply-To: <1219777788.24829.53.camel@dhcp-100-19-198.bos.redhat.com>

Larry Woodman wrote:
> On Tue, 2008-08-26 at 18:48 +0530, Balbir Singh wrote:
>> Balbir Singh wrote:
>>
>> Looking closely, may be there is a leak like Christoph suggested (most of the
>> pages have been consumed by the kernel) - only 280kB+244kB is in use by user
>> pages. The rest has either leaked or in use by the kernel.
>>
> 
> There is no leak.  Between the ptepages(pagetables:152485), the
> memmap(4456448 pages of RAM * 32bytes = 34816 pages) and the
> slabcache(slab:35543) you can account for ~99% of the Normal zone and
> its wired.  You simply cant run a large database without hugepages and
> without CONFIG_HIGHPTE set and not exhaust Lowmem on a 16GB x86 system.

Thanks for looking at it more closely, Yes, we do need to have CONFIG_HIGHPTE
enabled.

-- 
	Balbir

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  reply	other threads:[~2008-08-27  2:33 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-25 11:25 oom-killer why ? Marco Nietz
2008-08-25 15:56 ` Christoph Lameter
2008-08-25 16:18   ` Marco Nietz
2008-08-25 16:29     ` Christoph Lameter
2008-08-25 17:26       ` Marco Nietz
2008-08-25 18:55         ` Christoph Lameter
2008-08-26  6:44           ` Marco Nietz
2008-08-26 13:23             ` Christoph Lameter
2008-08-26 10:45         ` Larry Woodman
2008-08-25 17:36   ` Larry Woodman
2008-08-26 11:11 ` Balbir Singh
2008-08-26 12:00   ` Marco Nietz
2008-08-26 13:15     ` Balbir Singh
2008-08-26 13:18       ` Balbir Singh
2008-08-26 19:09         ` Larry Woodman
2008-08-27  2:32           ` Balbir Singh [this message]
2008-08-27  6:21             ` Marco Nietz
2008-08-30 18:19               ` Rik van Riel

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