Re: Hard disk slows linux system
Thanks for all the suggestions. It's working much better now but when I tried
to do the same thing with my dvdrom and cdrw (both of them IDE) I realised
that I don't have a /dev/hdc /dev/hdd.
When i'm mounting the drives i'm using the scsi emulation but obviously hdparm
doesn't want to work with sr0/1 ("/dev/sr0 not supported by hdparm").
So what should I do to enable DMA on those drives?
BTW i'm using devfs.
On Wednesday 14 May 2003 12:09, xavier renaut wrote:
> |to go even faster... or possible corrupt the fs if your disks or
> |bios doesnt support some of the options ...
> |
> |try ... ( some older disks does NOT support all these options, while
> |most newer ones does )
> | hdparm -d1 -c3 -m16 -u1 /dev/hda
>
> in the same way, (added -a, -X, -W)
>
> hdparm -m 16 -a 1 -c 3 -d 1 -X 69 -p -u 1 -W 1 /dev/hda
>
>
>
>
> -X 69 : 64 (ultra dma) + dma mode (hdparm -I)(5) =69
>
> You
> can find out the number to use for -m by using -i and reading MaxMultSect.
>
> -d 1 dma
> -m 16 multiple sector count
> -c 3 32 bit access I/O support
> -u 1 interupt masking
> -a 1 read ahead
> -W 1 write cache
> -p autodetect pio mode if bios is broken
>
>
> "works for me"(TM) ;-)
>
> bye
>
> --
> xavier renaut
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