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SubjectRe: Extremely low disk performance on K7S5A Pro
Andreas Schwarz said the following on 10/02/2003 05:47 PM:

>Hi,
>
>since I replaced my Abit KT7 with an Elitegroup K7S5A Pro (SIS735), I've
>got extremly low disk performance with every tested kernel version
>(2.4.20, 2.6.0-test6-mm2):
>
># hdparm -tT /dev/hda
>/dev/hda:
> Timing buffer-cache reads: 824 MB in 2.00 seconds = 411.65 MB/sec
> Timing buffered disk reads: 10 MB in 3.28 seconds = 3.05 MB/sec
> ^^^^
>
>DMA, 32bit etc. is activated (hdparm -d1 -c3 -u1 /dev/hda):
>
>
>

3.05 MB is even less than what I'm used to see with most drives and *PIO
4* !

Is there any ide message in /var/log/messages ?

I see you use hdparm to setup the drive/controller settings. I advise
you to let the kernel autotune the transfer modes by itself.

Could you send us :
- the exact kernel version,
- your kernel compilation config file,
- any kernel parameters provided,
- the content of /var/log/dmesg,
- the output of `lspci -vvxxx`,
- the ouput of `cat /proc/ide/sis`

Best regards,

--
Lionel Bouton - inet6
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