From owner-freebsd-current Mon Feb 18 11:43:39 2002 Delivered-To: freebsd-current@freebsd.org Received: from dragon.nuxi.com (trang.nuxi.com [66.92.13.169]) by hub.freebsd.org (Postfix) with ESMTP id 7148937B402 for ; Mon, 18 Feb 2002 11:43:35 -0800 (PST) Received: (from obrien@localhost) by dragon.nuxi.com (8.11.6/8.11.1) id g1IJhQL99006; Mon, 18 Feb 2002 11:43:26 -0800 (PST) (envelope-from obrien) Date: Mon, 18 Feb 2002 11:43:26 -0800 From: "David O'Brien" To: Matthew Dillon Cc: current@freebsd.org Subject: Re: Patch to improve mutex collision performance Message-ID: <20020218114326.A98974@dragon.nuxi.com> Reply-To: obrien@freebsd.org References: <200202181912.g1IJCGK32122@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: <200202181912.g1IJCGK32122@apollo.backplane.com>; from dillon@apollo.backplane.com on Mon, Feb 18, 2002 at 11:12:16AM -0800 X-Operating-System: FreeBSD 5.0-CURRENT Organization: The NUXI BSD group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Mon, Feb 18, 2002 at 11:12:16AM -0800, Matthew Dillon wrote: > While testing some Giant removal stuff I noticed that my current > system sometimes got into an extremely non-optimal flip-flop situation > between two processes contesting Giant on an SMP system which halved the > syscall performance in the test. ... > This will go in tonight if no problems arise. I request that you give say a 3 day review period for this. I know JHB still has limited email access (no DSL yet). This may be something he should review. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message