From: Wu Fengguang <fengguang.wu@intel.com>
To: John Lepikhin <johnlepikhin@gmail.com>
Cc: Jeffrey Hundstad <jeffrey.hundstad@mnsu.edu>,
"linux-kernel@vger.kernel.org. Alexander Viro"
<viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org,
Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: Very aggressive memory reclaim
Date: Wed, 30 Mar 2011 21:48:05 +0800 [thread overview]
Message-ID: <20110330134804.GA10113@localhost> (raw)
In-Reply-To: <AANLkTikmQJFq633VNqNOMC-BfEC=BU=g7j5uW78P4B4Z@mail.gmail.com>
Hi John,
On Mon, Mar 28, 2011 at 10:50:56PM +0400, John Lepikhin wrote:
> 2011/3/28 Jeffrey Hundstad <jeffrey.hundstad@mnsu.edu>:
>
> > I'd take a look here:
> > http://www.linuxinsight.com/proc_sys_vm_hierarchy.html
>
> Yes, I already played with dirty_*, min_free_kbytes (3000kb),
> swappiness (0..100), vfs_cache_pressure (1..200) and zone_reclaim_mode
> (currently 0). Other parameters are set to defaults.
>
> By the way, there is no swap enabled. Instead of just dropping 50% of
> page caches, kernel was intensively swapping then there was a swap
> device.
Is your memory usage balanced across the nodes? You can check it via
/sys/devices/system/node/node*/meminfo.
Are there lots of high-order memory allocations? /proc/buddyinfo will
disclose some of them.
Thanks,
Fengguang
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prev parent reply other threads:[~2011-03-30 13:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTinFqqmE+fTMTLVU-_CwPE+LQv7CpXSQ5+CdAKLK@mail.gmail.com>
2011-03-28 21:53 ` Very aggressive memory reclaim Dave Chinner
2011-03-28 22:52 ` Minchan Kim
2011-03-29 2:55 ` KOSAKI Motohiro
2011-03-29 7:33 ` John Lepikhin
2011-03-29 7:22 ` John Lepikhin
2011-03-28 23:58 ` Andi Kleen
2011-03-29 1:57 ` Dave Chinner
2011-03-29 7:26 ` John Lepikhin
2011-03-29 8:59 ` Avi Kivity
[not found] ` <4D90C071.7040205@mnsu.edu>
[not found] ` <AANLkTikmQJFq633VNqNOMC-BfEC=BU=g7j5uW78P4B4Z@mail.gmail.com>
2011-03-30 13:48 ` Wu Fengguang [this message]
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