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Re: kjournald using up majority cpu%.



Nico Morrison wrote:
> 
> We run several RH7.2/7.3 servers & recently 2 of them, although still
> working fine, have started to show kjournald as generally using over 50%
> cpu% on 'top' - virtually continuously.  Free cpu% generally less than 25%
> now!
> 
> Both machines are also using software RAID5 EIDE ....... otherwise are
> standard server installs.
> 
> Any info on what kjournald is & why it should have recently become so active
> would be gratefully received.
> 

This is usually because the IDE system is running in PIO mode.

Check your log messages, test the throughput with `hdparm -t' and
if the disks aren't using DMA, have a (cautious) play with `hdparm -d1'.





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