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Date: Thu, 19 Jan 2012 16:01:30 +0200
From: Andriy Gapon <avg@FreeBSD.org>
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To: Andrey Smagin <samspeed@mail.ru>
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Cc: freebsd-hackers@FreeBSD.org
Subject: Re: Tools to calculate time(or cpucycles) in mutex inside kernel ?
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on 19/01/2012 15:21 Andrey Smagin said the following:
> Hi ALL.
> 
> Have FreeBSD internal time counters for calculate subj ?
> How determine wich mutexes wait lot of time ?

LOCK_PROFILING(9) looks like what you want.

-- 
Andriy Gapon