Subject: Re: SCSI speed
To: Manuel Bouyer <bouyer@antioche.lip6.fr>
From: Brett Lymn <blymn@baesystems.com.au>
List: netbsd-help
Date: 05/10/2001 21:44:16
According to Manuel Bouyer:
>
>Maybe write cache is turned off on some of your disks ?
>I don't know how to check this, though ...
>
You need a tool that dumps the "mode pages" on the disk. I don't know
if we have such a thing in NetBSD - I had an old adaptec .exe that
would do this under ms-dog.
The other thing to check would be the bad block allocation - possibly
you could be getting a performance hit if the disk is re-vectoring a
lot of bad blocks.
--
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Brett Lymn, Computer Systems Administrator, BAE SYSTEMS
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