Re: kernel 2.6t9 SATA slower than 2.4.20

[Nuno Silva]

Hi!

Shaun Savage wrote:
> I have just compiled and installed kernel 2.6t9 on my RH9 / Asus A7N8X 
> Deluxe.  I find the disk access is slower using the 2.6 kernel than the 
> 2.4.20 kernel.
>
> To get it to work for 2.4.20 kernel I have to use
> # hdparm -d1 -X88 /dev/hde
> then the buffered disk read goes from 1.5M to 55M
>
> On the 2.6 kernel the buffered disk read is only 16M
>
> What do I have to do to increase the disk speed for kernel 2.6t9?

I bet it's the "beat to death in lkml" issue with readahead.

What's the output of cat /proc/ide/hdX?

Regards,
Nuno Silva


> Shaun Savage

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