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Date:      Fri, 18 Oct 1996 11:25:31 +0900 (JST)
From:      Michael Hancock <michaelh@cet.co.jp>
To:        Satoshi Asami <asami@freebsd.org>
Cc:        current@freebsd.org
Subject:   Re: Iozone: local vs nfs drives
Message-ID:  <Pine.SV4.3.93.961018112301.29655B-100000@parkplace.cet.co.jp>
In-Reply-To: <199610172340.QAA13043@sunrise.cs.berkeley.edu>

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On Thu, 17 Oct 1996, Satoshi Asami wrote:

>  * Did you have tagged-command queuing enabled?  According to my tests,
>  * that will make a BIG difference, if you have decent drives.
> 
> I haven't seen tagged-queueing make much difference for reads.  These
> are the kind of numbers we've seen before (off the top of my head):
> 
>                 w/o tag   with tag
>                  W    R    W   R
> Quantum Atlas    6    7    6   7
> Seagate 'Cuda    4    6    6   7

I guess we haven't addressed the original question though.  It's strange,
even if you consider the cache wiping effects.  Our rotational delay
defaults to zero doesn't it?

Regards,


Mike Hancock




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