From: Simon Kirby <sim@hostway.ca>
To: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Mark Moseley <moseleymark@gmail.com>,
linux-nfs@vger.kernel.org, Al Viro <viro@ZenIV.linux.org.uk>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [git pull] more vfs fixes for final
Date: Fri, 11 Mar 2011 13:09:38 -0800 [thread overview]
Message-ID: <20110311210938.GB8211@hostway.ca> (raw)
In-Reply-To: <20110310115856.GG22723@ZenIV.linux.org.uk>
On Thu, Mar 10, 2011 at 11:58:56AM +0000, Al Viro wrote:
> commit d891eedbc3b1b0fade8a9ce60cc0eba1cccb59e5
> Author: J. Bruce Fields <bfields@fieldses.org>
> Date: Tue Jan 18 15:45:09 2011 -0500
>
> fs/dcache: allow d_obtain_alias() to return unhashed dentries
Hmm, I was hoping this or something recently would fix nfs_inode_cache
growing forever and flush processes taking lots of system time since
2.6.36. For example:
OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
3457486 3454365 99% 0.95K 105601 33 3379232K nfs_inode_cache
469638 248761 52% 0.10K 12042 39 48168K buffer_head
243712 216348 88% 0.02K 952 256 3808K kmalloc-16
232785 202185 86% 0.19K 11085 21 44340K dentry
149696 54633 36% 0.06K 2339 64 9356K kmalloc-64
115976 106806 92% 0.55K 4142 28 66272K radix_tree_node
76064 45680 60% 0.12K 2377 32 9508K kmalloc-128
62336 53427 85% 0.03K 487 128 1948K kmalloc-32
41958 41250 98% 0.75K 1998 21 31968K ext3_inode_cache
This clears them all, similar to what you posted:
echo 2 > /proc/sys/vm/drop_caches
sync
echo 2 > /proc/sys/vm/drop_caches
...but 2.6.38-rc8 still doesn't seem to fix it.
http://0x.ca/sim/ref/2.6.37/cpu3_nfs.png
http://www.spinics.net/lists/linux-nfs/msg18212.html
Any ideas? This started with 2.6.36.
Simon-
next parent reply other threads:[~2011-03-11 21:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20110310110931.GF22723@ZenIV.linux.org.uk>
[not found] ` <AANLkTi=gv+iT6Lc_ADoBu9_P78ivhmOwLh-+Oki7WmD1@mail.gmail.com>
[not found] ` <20110310115856.GG22723@ZenIV.linux.org.uk>
2011-03-11 21:09 ` Simon Kirby [this message]
2011-03-11 21:35 ` [git pull] more vfs fixes for final J. Bruce Fields
2011-03-12 1:09 ` Simon Kirby
2011-03-15 0:46 ` J. Bruce Fields
2011-03-16 5:19 ` Simon Kirby
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