>
> In 2.6.13.2:
>
> /dev/hda:
> Timing cached reads: 28 MB in 2.15 seconds = 13.03 MB/sec
> Timing buffered disk reads: 14 MB in 3.30 seconds = 4.24 MB/sec
>
> and after hdparm -m 16 /dev/hda (recall this is the default in 2.6.12.6)
>
> /dev/hda:
> Timing cached reads: 24 MB in 2.05 seconds = 11.73 MB/sec
> Timing buffered disk reads: 36 MB in 3.11 seconds = 11.56 MB/sec
>
> I ran thing a few times in each case and the results were close. There
> was nothing in dmesg.
>
> David
>
Hey that 4.24 MB/sec hints at DMA being busted although it claims to be on. Can you post the complete dmesg output for both kernels please?
Parag
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