[ltp] tuning with hdparm

[Steve Harris]

On Wed, Sep 01, 2004 at 05:05:28PM -0500, T. Ivarsson wrote:
> I saw this posting about tuning the hard disk using hdparm:
> 
> http://usalug.org/phpBB2/viewtopic.php?p=33142
> 
> On my R40 with a 40GB drive I get a buffered disk read of about 20 MB/sec. Doing the poster's tuning tips I can increase the number with about 2 MB/sec.
> 
> Are there special concerns for a laptop when using hdparm? Better tuning parameter? What are the numbers other listmembers are seeing?

FWIW, the going from the default FC2 settings to what was in this posting I
lost 1.25 MB/s :)

T41p 50ish gig drive /dev/hda:
 Timing buffer-cache reads:   1556 MB in  2.00 seconds = 776.18 MB/sec
 Timing buffered disk reads:   96 MB in  3.05 seconds =  31.49 MB/sec

 Steve