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Date: Fri, 20 Jul 2012 12:38:09 -0700
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From: Adrian Chadd <adrian@freebsd.org>
To: Alexander Motin <mav@freebsd.org>
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Cc: Charles Owens <cowens@greatbaysoftware.com>, freebsd-stable@freebsd.org,
	John Baldwin <jhb@freebsd.org>, Steve McCoy <smccoy@greatbaysoftware.com>
Subject: Re: mfi(4) IO performance regression, post 8.1
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Hi Alexander,

I'm worried that this won't be the only source of "freebsd is slower
than linux" issues.

What can we add to the timer path to make identifying and root causing
this issue easy? I'd just like to be absolutely sure that we're not
only doing the best job possible, but we can provide some tools and
statistics to the user/administrator so as to make debugging much
easier.

Thanks,



Adrian