From owner-freebsd-arch Mon Feb 18 20:59: 2 2002 Delivered-To: freebsd-arch@freebsd.org Received: from sydney.worldwide.lemis.com (sydney.lemis.com [192.109.197.198]) by hub.freebsd.org (Postfix) with ESMTP id B002437B405; Mon, 18 Feb 2002 20:58:56 -0800 (PST) Received: (from grog@localhost) by sydney.worldwide.lemis.com (8.11.6/8.9.3) id g1J2Sfh02958; Tue, 19 Feb 2002 12:58:41 +1030 (CST) (envelope-from grog) Date: Tue, 19 Feb 2002 12:58:41 +1030 From: Greg Lehey To: Matthew Dillon Cc: arch@FreeBSD.ORG, jhb@FreeBSD.ORG Subject: Re: buildworld comparison stable vs current Message-ID: <20020219125840.B2835@sydney.worldwide.lemis.com> References: <200202170818.g1H8ID067573@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200202170818.g1H8ID067573@apollo.backplane.com>; from dillon@apollo.backplane.com on Sun, Feb 17, 2002 at 12:18:13AM -0800 Organization: The FreeBSD Project Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.FreeBSD.org/ X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sunday, 17 February 2002 at 0:18:13 -0800, Matthew Dillon wrote: > Here are the results of a buildworld test building the -current > source tree on a SMP stable box and on a SMP current box. There was > some interest at BSDCon for a comparison just to see where we were. > Everything matches up except time and context switches, the context > switches I presume is because interrupts require context switches > in -current. > > The time difference is 1800 seconds (stable) verses 2219 seconds (current), > making stable 1.23 times faster then current at the moment. I consider > this a fairly good number for where we are, and to be expected > considering the lack of optimizations in current. Have you done any profiling? Also, how many CPUs are there? As I said on Friday, I really think we should be doing more performance measurements, including measuring what's going on at the lock level. Greg -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message