From: Eric Sandeen <sandeen@sandeen.net>
To: "Linda A. Walsh" <xfs@tlinx.org>
Cc: xfs-oss <xfs@oss.sgi.com>
Subject: Re: xfsaild centisecs /proc wakeup control?
Date: Wed, 08 Oct 2008 15:45:12 -0500 [thread overview]
Message-ID: <48ED1BD8.60309@sandeen.net> (raw)
In-Reply-To: <48ED0DA9.7070002@tlinx.org>
Linda A. Walsh wrote:
> I was looking at powertop again recently, and noticed xfsbufd and xfsaild at the top
> of the wakeup list.
> xfsbufd can be tuned with /proc/sys/fs/xfs/xfsbufd_centisecs along with 3 other
> time-related tunables. However, I don't see one for xfsaild. Is that an oversight?
On what kernel?
As far as the wakeups go, I thought this was fixed; see for example:
TAKE 977545 - xfsaild causing too many wakeups
on 2.6.27-rc8 with xfs mounted, and powertop 1.9, I don't see xfs up
very high at all:
Top causes for wakeups:
29.4% ( 15.0) <interrupt> : pata_sil680
9.4% ( 4.8) <interrupt> : eth0
7.8% ( 4.0) iscsid : __mod_timer (process_timeout)
...
2.0% ( 1.0) xfsbufd : __mod_timer (process_timeout)
2.0% ( 1.0) xfsaild : __mod_timer (process_timeout)
-Eric
next prev parent reply other threads:[~2008-10-08 20:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-08 19:44 xfsaild centisecs /proc wakeup control? Linda A. Walsh
2008-10-08 20:45 ` Eric Sandeen [this message]
2008-10-09 0:15 ` Linda Walsh
2008-10-08 20:58 ` Dave Chinner
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