Hi Øystein,
Are you sure about bdflush? There's a process showing on my 2.2 system named
'bdflush' with a pid of 6 ...
Thanks for the noatime tip, I've enabled it but not luck. I've had a think
about noatime though, and I'm guessing it would only be effective if the
system was actually using (cached) files -- but as far as I know the system
should be completely idle.
# ps -A
PID TTY TIME CMD
1 ? 00:00:03 init
2 ? 00:00:00 keventd
3 ? 00:00:00 kapmd
4 ? 00:00:00 ksoftirqd_CPU0
5 ? 00:00:00 kswapd
6 ? 00:00:00 bdflush
7 ? 00:00:00 kupdated
8 ? 00:00:00 jfsIO
9 ? 00:00:00 jfsCommit
10 ? 00:00:00 jfsSync
11 ? 00:00:00 mdrecoveryd
82 ? 00:00:00 khubd
151 ? 00:00:00 kjournald
436 ? 00:00:00 fcron
444 ? 00:00:00 sshd
455 tty1 00:00:00 agetty
1142 ? 00:00:01 sshd
1144 pts/0 00:00:00 bash
1361 pts/0 00:00:00 ps
Does anyone have any ideas which of these processes could be spinning up the
disk every few hours ? I've disabled root's hourly cron job.
Cheers,
Dave
----
David Hogan
Hosting & Development Manager
Fundamental IT - 1300 882 395
http://www.fundamentalit.com
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:tsl-discuss-
> [EMAIL PROTECTED] On Behalf Of Oystein Viggen
> Sent: Saturday, 2 July 2005 12:01 AM
> To: [email protected]
> Subject: Re: Minimise disk access
>
> * ["David Hogan"]
>
> > Can anyone show me how to either find out what is using the disk, or
> > configure bdflush if that's likely to be the issue? I couldn't find
> anything
> > regarding bdflush in /etc ..
>
> I believe bdflush is outdated and no longer used in current Linux.
>
> Another thing you might try is to mount your filesystems with noatime.
> Just
> add noatime with a comma in the mount options field (normally "defaults").
> What this does is not update the "last accessed" metadata field when files
> are read. This should save you some writes.
>
> Øystein
> --
> When in doubt: Recompile.
>
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