Andre Hedrick wrote:
>Calling "hdpram -d1 /dev/hdx" will cause DMA timeout errors.
Performance testing on my non-overclocked bp6, 500MHz dual celerons,
latest stable bp6 BIOS (NJ), kernel 2.2.14, latest IDE patch from
Andre, and a 40GB Maxtor drive shows a 10 to 1 performance drop by
turning off DMA. This is soooooooo depressing. Should I just buy a
Promise66 card?
swix:~# hdparm -t /dev/hdg
/dev/hdg:
Timing buffered disk reads: 64 MB in 2.60 seconds = 24.62 MB/sec
swix:~# hdparm -d 0 /dev/hdg
/dev/hdg:
setting using_dma to 0 (off)
using_dma = 0 (off)
swix:~# hdparm -t /dev/hdg
/dev/hdg:
Timing buffered disk reads: 64 MB in 26.89 seconds = 2.38 MB/sec
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