HDD advice?

Ian Molton spyro at f2s.com
Fri Nov 15 07:32:34 PST 2002

On Fri, 15 Nov 2002 14:20:08 +0000 (UTC)
heartboy at nycap.rr.com (Joe Morris) wrote:

> Okay, I redid it with a 1G file size (I've got 512M of RAM):
>               -------Sequential Output-------- ---Sequential Input-- 
> --Random--
>               -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- 
> --Seeks---
> Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU 
> /sec %CPU
>          1024 25438 96.8 39138 10.9 17911  5.5 19748 78.5 35907  7.5
>          174.0  
> 1.0

not even close to max speed, but then if thats in the middle of the
drive somewhere, its alright.

Have you tried the zcat utility? I ran it overnight (zcat
/dev/discs/disc0/part3 > out.txt) it actually took 58 mins, but I was in
bed :)

It showed (when plotted in Excel) a curve from about 42MB/sec (max) down
to about 29MB/sec min at the arse end of the disc.

Thats 10% slower than its meant to run, for the fast bit, but more
worrying were the slow spots (20MB/sec) about 1/3 to 1/2 of the way
through the disc, exactly where the file I tried to burn would have

Anyhow - WD have (at no cost to me) agreed to exchange it, so Im happy.

I'll buy from them again - even if 9/10 of their discs are faulty - with
customer service like that.
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