linux-l: Festplatte mit DMA

[Boris Reyher]

Michael Müller schrieb:
> 
> 
> grizzly:/home/mm# hdparm -t /dev/hda
> 
> /dev/hda:
>  Timing buffered disk reads:  64 MB in  3.49 seconds = 18.34 MB/sec
> grizzly:/home/mm# hdparm -T /dev/hda
> 
> /dev/hda:
>  Timing buffer-cache reads:   128 MB in  0.99 seconds =129.29 MB/sec
> 
> Ist doch okay, oder?
> 

Das ist es!

statik22:[bori0930]# /sbin/hdparm -c1 -d1 -X66 -m16 -k1 -K1 /dev/hda

/dev/hda:
 setting 32-bit I/O support flag to 1
 setting multcount to 16
 setting using_dma to 1 (on)
 setting keep_settings to 1 (on)
 setting drive keep features to 1 (on)
 setting xfermode to 66 (UltraDMA mode2)
 multcount    = 16 (on)
 I/O support  =  1 (32-bit)
 using_dma    =  1 (on)
 keepsettings =  1 (on)
statik22:[bori0930]# /sbin/hdparm -t /dev/hda

/dev/hda:
 Timing buffered disk reads:  64 MB in  2.81 seconds =22.78 MB/sec   
:)))
statik22:[bori0930]# /sbin/hdparm -T /dev/hda

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.87 seconds =147.13 MB/sec 
:)))


Gruss,
Boris
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