At 22:24 +0300 2000.09.08, Esko Petteri Matinsola wrote:
>
>read performance and seeks seems OK, but block writes only about 1/9th !
>As I read from www.vinumvm.org I should get something like 5MBps block
>writes.
>
>Have I misunderstood something, configured someting improperly, it's
>because of only two IDE-controllers or why I get so lousy write
>performance ?

Your configuration looks fine.

I just recently tried a similar setup using Promise Ultra66 controllers
with some Quantum and IBM drives (tried both). I got lousy performance
doing sustained writes to a RAID5 volume, using 4 UDMA66 drives each a
master on a controller. just doing a cat /dev/zero > blah

I just decided to stick with striping and make regular backups.
I may try vinum with RAID5 on a SCSI array later. 

FWIW,
FreeBSD 4.1-STABLE
Abit BP6 dual 466 Celerons 
  (not using the HPT controller)
Promise Ultra66
Quantum KA 13.6 gig and IBM Deskstar 30 gig drives

--clark



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