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Date:      Thu, 5 Mar 1998 09:53:10 -0100 (GMT)
From:      Remy NONNENMACHER <remy@synx.com>
To:        Terry Lambert <tlambert@primenet.com>
Cc:        tlambert@primenet.com, hackers@FreeBSD.ORG
Subject:   Re: Disk write caches
Message-ID:  <Pine.A32.3.91.980305094557.16895O-100000@rs1>
In-Reply-To: <199803042312.QAA17919@usr01.primenet.com>

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On Wed, 4 Mar 1998, Terry Lambert wrote:

> > > I would be very interested to see what the benchmarks on a machine
> > > with soft updates would be with a disk with and without write
> > > cacheing.
> > 
> > I tested cache benefits within disks. Write cache disabling lowered the 
> > perfs from 2 to 10 time depending on operations.
> 
> Did this include soft updates, however?
>

No. It was using 3.0 from December (25). How does soft update compares 
with async mounts ? Will the driver immediatly responding 'OK' for each 
write have no more interest with soft update ?


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