Re: High CPU usage for disk I/O while DMA is enabled

[Rudo Thomas]

> my CPU usage goes up to 100% while copying files from CD to HDD or from
> HDD to HDD.
> I have enabled DMA successfully on all of my HDD.
> 
> <snip>
> 
> I am experiencing this since my Kernel upgrade from the 2.4.x series to
> the current 2.6.7 Kernel.
> So DMA is definetely running on my box. But the CPU is utilizing too
> much while copying files.
> 
> Is there anything that I have forgot to consider in the "new" 2.6.x
> Kernel series for DMA settings?

Maybe you don't have the right IDE driver configured (CONFIG_BLK_DEV_*)...

Rudo.
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