Hi Corin,
I already use hdparm in my rc scripts but I wasn't using the read-ahead
options which did reduce CPU usage for reads, so thank you!
-Kanoa
Corin Hartland-Swann wrote:
> Hi Kanoa,
>
> On Tue, 17 Apr 2001, Kanoa Withington wrote:
>
>> A word of caution here, I do find CPU usage to be very high for 500+gb
>> IDE software RAID5 arrays. At least for the 2.2.16 kernel, perhaps it's
>> better under 2.4.x. I have a few 800+gb arrays with 2x800mhz PIII
>> processors and CPU definetly appears to be the limiting resource. Same
>> goes for 400+gb arrays with 2x700mhz processors.
>
>
> Did you see my earlier post suggesting:
>
> hdparm -m16 -c1 -d1 -a8 /dev/hdX
>
> It works well for all modern UDMA drives. Put it into your rc scripts if
> ti works for you.
>
> Regards,
>
> Corin
>
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