Thank you Andrew, Is this the same as the checkdma utility that allows turning on & off of DMA on Windows? And as these servers are working linux customer servers - can we change the DMA setting & know we can change it back without problems? Thanks again. Regards, Nico Morrison From: Andrew Morton [mailto:akpm@digeo.com] Sent: 08 December 2002 03:02 To: Nico Morrison Cc: 'ext3-users@redhat.com' Subject: 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'. _______________________________________________ Ext3-users@redhat.com https://listman.redhat.com/mailman/listinfo/ext3-users
