Re: Extremely low disk performance on K7S5A Pro

[Lionel Bouton <Lionel.Bouton@inet6.fr>]

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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