Subject: Re: xfssyncd syncing every five seconds?
From: Steve Lord <lord@sgi.com>
To: Simon Matter <simon.matter@ch.sauter-bc.com>
Cc: Nathan Scott <nathans@sgi.com>, Jeremy Field <jezza@fl.net.au>,
        linux-xfs@oss.sgi.com
In-Reply-To: 
	<51664.213.173.165.140.1063926808.squirrel@imap01.ch.sauter-bc.com>
References: <20030918020632.GA18362@wylde.fl.net.au>
	<20030918122113.A6939@wobbly.melbourne.sgi.com>
	<20030918025301.GA18791@wylde.fl.net.au>
	<20030918134329.B6939@wobbly.melbourne.sgi.com> 
	<51664.213.173.165.140.1063926808.squirrel@imap01.ch.sauter-bc.com>
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
Date: 18 Sep 2003 21:11:16 -0500
Message-Id: <1063937479.1811.19.camel@laptop.americas.sgi.com>
Mime-Version: 1.0
Sender: linux-xfs-bounce@oss.sgi.com
Errors-to: linux-xfs-bounce@oss.sgi.com
Precedence: bulk
Content-Length: 871
Lines: 25

On Thu, 2003-09-18 at 18:13, Simon Matter wrote:
> 
> I just wanted to say 'me too'. And I can confirm that it's new with 1.3, I
> have never seen this with any XFS version before. I have exactly the same
> kernels with XFS 1.2 and 1.3 and it only happens with 1.3.
> If you have a filesystem spread over lots of spindles, it sound a bit
> scary, every 5 seconds.
> 
> Simon
> 

I could gripe about folks reporting this after the release, rather
than before it... I just logged into my workstation from home, and
watched it for a minute or two, zero I/O during this time. On the
other hand, my laptop does appear to be doing periodic I/O and it
does seem to be every 5 seconds. I have also had a report of someone
not being able to keep their disks spun down in 2.6 on a laptop.

Scratching my head so far, 5 seconds does not really tie up with
any xfs thread.

Steve