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Date: Sat, 05 Oct 2002 19:49:29 +1000
To: Linus Torvalds <torvalds@transmeta.com>
From: Lincoln Dale <ltd@cisco.com>
Subject: Re: [PATCH] direct-IO API change
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At 04:23 PM 4/10/2002 -0700, Linus Torvalds wrote:
>Especially since I thought that O_DIRECT on the regular file (or block
>device) performed about as well as raw does anyway these days? Or is that
>just one of my LSD-induced flashbacks?

from my multiple 64/66 PCI bus + multiple 2gbit/s FC HBA tests, yes, 
they're around the same.
(now up to 390mbyte/sec throughput on latest & greatest x86 hardware i 
have; front-side-bus no longer the limiting factor, but dual 64/66 PCI).

of course, purely synthetic tests designed to stress Fibre Channel 
switching infrastructure, not real-world disk i/o..


cheers,

lincoln.

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