On Wed, 1 Mar 2000, Leon Brouwers wrote:
>Configuring Mylex DAC1164P PCI RAID Controller
...
>In raid 5 configuration, machine has PIII-450 128 Mb/256Mb swap on
>2.2.14 + mingo's raid patches
?? "raid patches" ?? The controller presents a logic drive to the kernel
as a block device (none of this SCSI mess to deal with :-)) So, what does
the (linux kernel/software?) raid patches have to do with anything?
> -------Sequential Output-------- ---Sequential Input-- --Random--
> -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
>Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
> 256 5451 78.7 10035 8.5 4000 7.3 3975 55.3 18765 11.3 262.8 3.9
That's a lot of CPU being used for a hardware RAID device.
I'll have to play with my AccelRAID 150 -- of course, Mylex has some problems
to fix on this thing. (parity calculation bug it would appear.)
--Ricky
