Date: Wed, 14 Jun 2006 10:21:44 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Robert Watson <rwatson@freebsd.org>, John Birrell <jb@what-creek.com>, current@freebsd.org Subject: Re: DTrace for FreeBSD - fbt output Message-ID: <200606141021.45669.jhb@freebsd.org> In-Reply-To: <20060614095449.GA82424@what-creek.com> References: <20060613021543.GA71283@what-creek.com> <20060614103614.Y34121@fledge.watson.org> <20060614095449.GA82424@what-creek.com>
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On Wednesday 14 June 2006 05:54, John Birrell wrote: > > > critical_enter 4364385478 > > > critical_exit 4364385478 >=20 > The points I wanted to make about these calls are: >=20 > 1. critical_enter is called so often that the debug printf that /could/ > be compiled into it should cause an increase in global warming if > you tried. 8-) No, it's not a printf to the console it's a printf into the a circular buffer (see options KTR) and the system has been run with it enabled w/o burning the machine up. :) =2D-=20 John Baldwin <jhb@FreeBSD.org> =A0<>< =A0http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" =A0=3D =A0http://www.FreeBSD.org
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