Re: hdparm

[François Boisson <user@maison.homelinux.net>]

On Wed, 29 Jan 2003 09:35:30 +0100
Jean-Michel OLTRA <jm.oltra@libertysurf.fr> wrote:

> Le mardi 28 janvier 2003, Erwan David a écrit...
> 	bonjour,
> 
> 
> > faire un script /etc/init.d/hdparm du genre
> 
> > ### parametres pour hdparm
> > hdparm -d1 -c1 -m16 -u1 -k1 /dev/hda
> 
> Le site lea-linux indique que mettre hd en 32 bits n'améliore pas les
> perf si le dma est activé.
> 
portable:/home/francois# hdparm -c 0 /dev/hda
/dev/hda:
 setting 32-bit I/O support flag to 0
 I/O support  =  0 (default 16-bit)
portable:/home/francois# hdparm -tT /dev/hda
/dev/hda:
 Timing buffer-cache reads:   128 MB in  1.51 seconds = 84.77 MB/sec
 Timing buffered disk reads:  64 MB in 10.47 seconds =  6.11 MB/sec
portable:/home/francois# hdparm -tT /dev/hda
/dev/hda:
 Timing buffer-cache reads:   128 MB in  1.52 seconds = 84.21 MB/sec
 Timing buffered disk reads:  64 MB in  6.99 seconds =  9.16 MB/sec
portable:/home/francois# hdparm -c 1 /dev/hda
/dev/hda:
 setting 32-bit I/O support flag to 1
 I/O support  =  1 (32-bit)
portable:/home/francois# hdparm -tT /dev/hda
/dev/hda:
 Timing buffer-cache reads:   128 MB in  1.50 seconds = 85.33 MB/sec
 Timing buffered disk reads:  64 MB in  6.88 seconds =  9.30 MB/sec
portable:/home/francois# hdparm -tT /dev/hda
/dev/hda:
 Timing buffer-cache reads:   128 MB in  1.51 seconds = 84.77 MB/sec
 Timing buffered disk reads:  64 MB in  6.95 seconds =  9.21 MB/sec
portable:/home/francois#

> Un avis ?

Un peu mieux on dirait...

> -- 
> jean-michel
> 
> 
> -- 
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