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Date:      Thu, 19 Jan 2012 16:01:30 +0200
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Andrey Smagin <samspeed@mail.ru>
Cc:        freebsd-hackers@FreeBSD.org
Subject:   Re: Tools to calculate time(or cpucycles) in mutex inside kernel ?
Message-ID:  <4F18223A.6000702@FreeBSD.org>
In-Reply-To: <E1RnrwC-0006w5-2R.samspeed-mail-ru@f173.mail.ru>
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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
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