Messages in this thread | | | Subject | Re: complain about dpt_2o driver and CPU time | Date | Fri, 17 May 2002 13:42:55 +0100 (BST) | From | Alan Cox <> |
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> feel that the card is very slow, the test with Bonnie shows 1810KB/sec > with CPU load less than 2%. This shows the CPU time is idle, but the > load average go up to around 13-14 . This means the dpt_i2o driver is
The load average includes I/O waiting. So that may well mean you have 14 different processes waiting for the card.
> even faster than this Ultra-160 SCSI i960 RAID with 32MB cache. If this > is the case, I will just throw it away and use my onboard Ultra-160 > connector with software RAID which runs faster(at least). This is almost > unusable for even small workgroup server.
The numbers seem extremely poor. There are plenty of abysmally slow RAID controllers out there but I'd expect bettere than 1810K/second even on things like old Megaraid cards.
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