Date: Wed, 23 May 2001 10:38:13 -0400 From: Shannon Hendrix <shannon@widomaker.com> To: "Daniel C. Sobral" <dcs@newsguy.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: technical comparison Message-ID: <20010523103811.A13163@widomaker.com> In-Reply-To: <3B0B88A1.BFB8D073@newsguy.com>; from dcs@newsguy.com on Wed, May 23, 2001 at 06:53:37AM -0300 References: <200105221816.f4MIGK1171051@saturn.cs.uml.edu> <3B0AB4B1.78A0FB0A@mitre.org> <20010522212029.D2734@widomaker.com> <3B0B187D.47C98452@newsguy.com> <20010522223120.C5012@widomaker.com> <3B0B88A1.BFB8D073@newsguy.com>
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On Wed, May 23, 2001 at 06:53:37AM -0300, Daniel C. Sobral wrote:
> > I cannot verify that with my drive, but my largest is 18GB so maybe
> > the difference is not as pronounced as on some newer drives like those
> > (currently) monster 70GB drives.
>
> It should be measurable.
Actually, I edited too much. I have seen a difference, but it was too small
to care abot on my system. These are 7200rpm 18GB drives too.
The other variances in filesystem performance seem to overshadow the
difference.
The only thing I ever did to pick up some speed was to move some data
on a raw device to the faster tracks. I was streaming it in so the
speedup was good. I also picked up some performance on one Linux system
by putting swap in the faster tracks. But for the most part, I've never
been able to tell.
I have read that on the 40-80GB drives, it's very noticeable. In fact,
the IBM Ultrastars are supposed to be faster than their electronics can
handle on the very outer tracks.
--
"Secrecy is the beginning of tyranny." -- Unknown | | |
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