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Date: Tue, 17 Feb 2009 08:57:42 +0100
From: Luigi Rizzo <rizzo@iet.unipi.it>
To: Scott Long <scottl@samsco.org>
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Cc: freebsd-current@freebsd.org, freebsd-stable@freebsd.org,
	Ivan Voras <ivoras@freebsd.org>
Subject: Re: HEADS UP: Major CAM performance regression
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On Sat, Feb 14, 2009 at 07:33:25AM -0700, Scott Long wrote:
...
> >I'll try your suggestion if you have one.
> 
> I don't have a magic universal testing suite in my back pocket, sorry.
> You need to look at your expected workload and develop tests to simulate
> it.  When I do testing during driver development, I try a lot of
> different parallel, sequential, large i/o, and small i/o combinations.

i just committed a port sysutils/fio that perhaps can help testing
IO performance with various patterns.

cheers
luigi