On Thu, 2003-08-14 at 07:19, Ricardo Galli wrote:
> Hi,
>
> since I started with 2.5 in my laptop, I noticed that the disk with XFS
> was
> spinning up continously. I checked with vmstats, and I saw I/O almost every
> 60 seconds. They were mainly outputs, among 11 and 250 blocks each time.
>
> I checked every process and redirected all syslogd to /dev/tty7 to be sure no
> processes were generating the I/O. I couldn't find any.
>
> So finally I repartitioned the disk and copied the whole system to a XFS
> partition and to an Ext3. Then I tested both, rebooting each time and
> changing the root fs.
>
> With Ext3 there is no problem, the disk spins off very rapidly, but XFS kept
> doing I/O's.
>
> So I checked it again in 2.4.21-ac4. Although there were more XFS I/O than
> with Ext3, they were not so frequent as in 2.6.
>
> I also played echoing different values to /proc/sys/fs/xfs/ and
> /proc/sys/vm/pagebuf/ files without noticeable changes.
>
> Is it a problem in 2.6 or the /proc parameters must be fine tuned?
Hmm, I would expect one or two writes like this over a 1 to 2 minute
period after some activity, but after that it should idle down. I will
take a look.
Steve
--
Steve Lord voice: +1-651-683-3511
Principal Engineer, Filesystem Software email: lord@xxxxxxx
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