[Asterisk-Users] RAID affecting X100P performance...

[Richard Scobie]

Mike Benoit wrote:
> I have a P3-800 with two IDE drives in a software RAID1 configuration.
> Each drive is on a separate IDE channel. Now anytime there is HD
> activity, I hear "beeps" and "cutting out" on a call using the X100P
> card. 
> 
> I ran the zttest program, and discovered HD activity would drop the
> accuracy down to between 2% and 50%. 
> 
> However I noticed if I disabled one drive in the RAID1 array, zttest
> would always report 99.98% or higher. So one drive running works fine,
> but as soon as I enable the second drive, all hell breaks loose. DMA and
> 32-bit mode are enabled on both drives as well.

Have you tried hdparm -u1 on the drives as well? This prevents other 
IRQs being blocked during disk access.

Regards,

Richard