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Date:      Thu, 04 Mar 1999 00:23:44 +0200
From:      Sheldon Hearn <sheldonh@iafrica.com>
To:        chris@calldei.com
Cc:        freebsd-current@freebsd.org
Subject:   Re: ata1: unwanted interrupt 
Message-ID:  <73399.920499824@axl.noc.iafrica.com>
In-Reply-To: Your message of "Wed, 03 Mar 1999 16:06:19 CST." <19990303160619.A705@holly.dyndns.org> 

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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)?

Ciao,
Sheldon.


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