VDMA patch
This thing uses pxa dma engine to transfer data from ide data register.
It results in faster transfer rates and less cpu load. DMA can be
enabled/diabled
in common way (hdparm -d or ide=nodma boot parameter). Current version is for
2.6.21,
I didn't port it to later kernels.
diff -ruN -
Well, I tried your patch from the list on 2.6.26-RP.
I see 2.33 MB/sec -> 2.63MB/sec improvement on 6 years old 40x card.
In my experience, the speed in pcmcia mode is not related to card's
maximum speed.
I don't think that 6 year old CF supports advanced timing mode.
You may check it with hdp
kirill wrote:
> Hi!
>
> Recently I've upgraded internal cf on my c3000. So now I have a better idea
> of what
> cf storage performance you can get with c3000 hardwire.
>
> Benchmark results (2.6.19 kernel, dd if=/dev/hda of=/dev/null):
> 1) unmodified kernel: ~ 2MB/sec
> 2) optimized timings, 2
