raid3 is slow

[Szabó Péter]

> And what if u try this:
> dd if=/dev/raid3/... of=/dev/null bs=1m count=128
> ?

#dd if=/dev/raid3/nmivol of=/dev/null bs=1m count=128
128+0 records in
128+0 records out
134217728 bytes transferred in 1.555843 secs (86266891 bytes/sec)

> 8KB/transfer is a little low for my taste... Looks like ur copy program 
> uses
> 32KB transfers, instead of 128KB transfers...

> What if u try
> dd if=/source-file/on/raid3-device of=/dev/null bs=1m count=128
> ?

dd if=/mnt/vol/site/video/Sissi_2-3/SISSI_2.ISO of=/dev/null bs=1m count=128
128+0 records in
128+0 records out
134217728 bytes transferred in 6.096775 secs (22014545 bytes/sec)

> -Arne

Matyee



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