Re: Hard disk slows linux system
Thanks for the replies. Indeed, DMA seemed to be the problem as first I was
getting:
/dev/hdb:
Timing buffer-cache reads: 128 MB in 0.65 seconds =196.92 MB/sec
Timing buffered disk reads: 64 MB in 13.05 seconds = 4.90 MB/sec
and after configuring hdparm I got:
/dev/hdb:
Timing buffer-cache reads: 128 MB in 0.47 seconds =272.34 MB/sec
Timing buffered disk reads: 64 MB in 3.96 seconds = 16.16 MB/sec
Is that resonable? these benchmarks are for a quite old 10GB HD but my new
120GB 8MB cache Western Digital drive was getting these results after
enabling DMA:
/dev/hda:
Timing buffer-cache reads: 128 MB in 0.55 seconds =232.73 MB/sec
Timing buffered disk reads: 64 MB in 1.74 seconds = 36.78 MB/sec
which is not much faster...
I think the problem is solved but let me know if there's anything else to do.
Thanks again, Tal
On Tuesday 13 May 2003 20:33, Rus Foster wrote:
> On Wed, 14 May 2003, Tal Eisenberg wrote:
> > Hi, is it normal that hard disk activities such as cd-ripping, big file
> > conversions and just plain copying take an enormous amount of my system
> > resources? All these things slows the system so much that even the mouse
> > isn't moving smoothly. This doesn't happen in WinXP where i can do all
> > these things without slowing the system at all.
>
> Hi,
> Assuming you have got IDE disks then you want to look at hdparm. This
> can switch on DMA etc. Try running hdparm /dev/hda to see what you have
>
> to test it to
>
> hdparm -tT /dev/hda
>
> good starting point is
>
> hdparm -m 16 -d 1 -c 1 /dev/hda
>
> test again
>
>
> hdparm -tT /dev/hda
>
>
> HTH
>
> Rgds
>
> rus
> --
> www: http://www.65535.net | Hosting - Shell Accounts
> MSNM: support@65535.net | Virtual Servers from just $15/mo
> e: rghf@65535.net | Community: http://www.65535.org
> t: +44 (0) 7092016595 | Rate us: http://www.65535.net/rate.php
Reply to: