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In comp.os.linux.setup Thomas Olschewski <junk@innomic.de> suggested:
> Hello,

> I have a system with 3 160 GB IDE disks (Samsung SP160SP) running at 2 PCI
> IDE controllers (Promise Ultra133 Tx2). I installed a SuSE 9.0 and created 3
> (software) raid 5 arrays with SuSE's setup software yast.

> System boots, raid works but the systems is very slow now. CPU is a PIII 500
> MHz, RAM is 256 MB big. No GUI is installed. If I do a less it runs so
> slow, that I can see single lines moving across the screen when I scroll.

> A top shows processes raid5d and raid5syncd have together allways over 95%
> CPU time.

I'd check first if the RAID has already finished syncing 'cat
/proc/mdstat' or alike. That may take some time with RAID5 on
large disks and a slow system. 'mdadm' has some more options to
check sw-raid status (man mdadm).

Next, I'd check performance '-Tt' with hdparm and the
udma?/pio?/etc settings of the disks (man hdparm) and correct
them if needed up to the maximum possible.

Good luck

--
Michael Heiming (GPG-Key ID: 0xEDD27B94)
mail: echo zvpunry@urvzvat.qr | perl -pe 'y/a-z/n-za-m/'
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