Re: [SLUG] Hello, first post :)

From: steve szmidt (
Date: Wed Jan 11 2006 - 18:49:26 EST

On Wednesday 11 January 2006 16:25, Ian C. Blenke wrote:
> Chris Mathey wrote:
> > Hi!,
> > I just wanted to chew some bandwidth and introduce myself. I've been a
> > lurker for awhile and see that the folks on this list are top notch :)

Good to have you! One can never have too many able people! : )

> hdparm -t -T /dev/hda
> /dev/hda:
> Timing cached reads: 488 MB in 2.00 seconds = 243.79 MB/sec
> Timing buffered disk reads: 76 MB in 3.06 seconds = 24.81 MB/sec
> On an idle Athlon XP system, properly wired, I get better numbers:
> hdparm -t -T /dev/hda
> /dev/hda:
> Timing buffer-cache reads: 128 MB in 0.37 seconds =345.95 MB/sec
> Timing buffered disk reads: 64 MB in 1.09 seconds = 58.72 MB/sec
> My guess is that you may have a cabling issue here.
> - Ian C. Blenke <>

Buffer size is also key in getting good performance of a drive. Anything less
than 8MB is silly today. I have 16MB in my drive and I get:

Timing buffer-cache reads: 1852 MB in 2.00 seconds = 924.09 MB/sec

Dell is one of the most overpriced places to buy drives (parts) from. And to
top ot off they usually only ship drives with 2MB cache.

BTW, you can skip the 2nd dash for the parameters. -Tt works fine. The same
applies to most shell executed programs. Ditto with spaces between the flag
and the parameter for it. Like -wmyfile will write to myfile. Unix was (and
still is) developed by people who likes doing the minimum amount of typing.


Steve Szmidt

"For evil to triumph all that is needed is for good men to do nothing. Edmund Burke ----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.

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