Re: kernel 2.6t9 SATA slower than 2.4.20

From: Arve Knudsen
Date: Mon Oct 27 2003 - 09:50:43 EST


On Mon, 27 Oct 2003 08:53:01 -0500, Jeff Garzik <jgarzik@xxxxxxxxx> wrote:

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?


Are you using CONFIG_SCSI_SATA in 2.6?

Should this make a difference speedwise with SiI 3112? I have one Maxtor 120GB, and one Seagate 120GB each attached to the SiI controller (Mobo: Asus A7N8X Deluxe). The Seagate (my main drive) is as slow as ever (since DMA was turned on by default, ~13MB/s), although hdparm reports better numbers for the Maxtor (~33MB/s).

Regards

Arve Knudsen
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