From owner-freebsd-hackers@FreeBSD.ORG Thu Jan 26 00:05:29 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A3DE7106567B for ; Thu, 26 Jan 2012 00:05:29 +0000 (UTC) (envelope-from jilles@stack.nl) Received: from mx1.stack.nl (relay02.stack.nl [IPv6:2001:610:1108:5010::104]) by mx1.freebsd.org (Postfix) with ESMTP id 39C888FC15 for ; Thu, 26 Jan 2012 00:05:29 +0000 (UTC) Received: from snail.stack.nl (snail.stack.nl [IPv6:2001:610:1108:5010::131]) by mx1.stack.nl (Postfix) with ESMTP id 5CFDA3596FD for ; Thu, 26 Jan 2012 01:05:28 +0100 (CET) Received: by snail.stack.nl (Postfix, from userid 1677) id 3D4D228468; Thu, 26 Jan 2012 01:05:28 +0100 (CET) Date: Thu, 26 Jan 2012 01:05:28 +0100 From: Jilles Tjoelker To: freebsd-hackers@freebsd.org Message-ID: <20120126000527.GB64833@stack.nl> References: <20120125225446.GA64833@stack.nl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120125225446.GA64833@stack.nl> User-Agent: Mutt/1.5.21 (2010-09-15) Subject: Re: sh(1) vfork patch, with benchmarks X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Jan 2012 00:05:29 -0000 On Wed, Jan 25, 2012 at 11:54:46PM +0100, Jilles Tjoelker wrote: > [snip] > x micro-vfork-timings1-n > + micro-vfork-timings1-y > +------------------------------------------------------------------------------+ > | + | > | + x | > | + ++ x xx | > |++ ++ xx xx x| > | |_A| |___AM_| | > +------------------------------------------------------------------------------+ > N Min Max Median Avg Stddev > x 9 3.86 4.05 4 3.9633333 0.076648549 > + 9 2.52 2.6 2.58 2.5722222 0.033082389 > Difference at 95.0% confidence > -1.39111 +/- 0.0589948 > -35.0995% +/- 1.48851% > (Student's t, pooled s = 0.0590315) > [snip] I forgot to mention, the numbers are time in seconds (measured with /usr/bin/time). -- Jilles Tjoelker