Re: high cpu load with sw raid1

From: David Hajek (david@atrey.karlin.mff.cuni.cz)
Date: Fri Sep 21 2001 - 02:07:20 EST


On Thu, Sep 20, 2001, Andreas Dilger wrote:
> On Sep 20, 2001 10:26 +0200, David Hajek wrote:
> > I have linux box with 70GB SW Raid1. This box runs for half
> > a year without problems but now I meet the high cpu load
> > problems. I suspect that it can be caused by not enough
> > free disk space on this md device. I see following:
> >
> > 1 GB free - load > 5
> > 5 GB free - load < 1
>
> What filesystem are you using? If it is reiserfs, and you have < 10%
> of the disk free, it is very unhappy. A patch to fix this is available.
>

I'm using ext2. I suspect high ext2 fragmentation, because when
there are 'only' 1GB free the disk is _really_ busy. I doubt
that it takes lot of time to find free blocks.

-- 
David Hajek
hajek@idoox.com                	     GSM: +420 604 352968
- VMS is like a nightmare about RXS-11M.

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