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Date:      Wed, 3 Mar 1999 16:30:15 -0600
From:      Chris Costello <chris@holly.dyndns.org>
To:        Sheldon Hearn <sheldonh@iafrica.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: ata1: unwanted interrupt
Message-ID:  <19990303163015.A930@holly.dyndns.org>
In-Reply-To: <73399.920499824@axl.noc.iafrica.com>; from Sheldon Hearn on Thu, Mar 04, 1999 at 12:23:44AM %2B0200
References:  <19990303160619.A705@holly.dyndns.org> <73399.920499824@axl.noc.iafrica.com>

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On Wed, Mar 3, 1999, Sheldon Hearn put this into my mailbox:
> 
> 
> On Wed, 03 Mar 1999 16:06:19 CST, Chris Costello wrote:
> 
> >    After having CVSupped to the latest 4.0-CURRENT tree
> > (just now), I noticed the amazing speed of the new ATA driver.
> 
> The amazing speed of the new ATA driver? Were you using 32 bit transfers
> and multi-sector IO with the older driver?
> 
> I assumed from the benchmarks posted that I had no reason to feel
> alarmed about the fact that the new driver offered no tangible
> performance increase.
> 
> My understanding was that we'd "feel it" when DMA transfers were enabled
> for those drives that support them.
> 
> Am I confused (yet again)?

   Yes ;-)

   I mean the time it takes to actually detect the drive.  I
haven't really tested out the driver for actual
seek/read/write speed yet (but it might be a fun thing to try out
one of these days).

> 
> Ciao,
> Sheldon.
> 

-Chris


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