From owner-freebsd-arch@FreeBSD.ORG Tue Jul 15 01:40:31 2014 Return-Path: Delivered-To: arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 757E9B6D for ; Tue, 15 Jul 2014 01:40:31 +0000 (UTC) Received: from vps.hungerhost.com (vps.hungerhost.com [216.38.53.176]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4E35929D9 for ; Tue, 15 Jul 2014 01:40:31 +0000 (UTC) Received: from c-76-19-231-75.hsd1.ma.comcast.net ([76.19.231.75]:59308 helo=[172.16.19.1]) by vps.hungerhost.com with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.80.1) (envelope-from ) id 1X6riE-0003YJ-4i for arch@freebsd.org; Mon, 14 Jul 2014 21:39:23 -0400 From: "George Neville-Neil" To: arch@freebsd.org Subject: RFC: Addition of Murmur3 hash to FreeBSD for use by PF Date: Mon, 14 Jul 2014 21:39:13 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; format=flowed X-Mailer: MailMate (1.7.2r3905) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - vps.hungerhost.com X-AntiAbuse: Original Domain - freebsd.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - neville-neil.com X-Get-Message-Sender-Via: vps.hungerhost.com: authenticated_id: gnn@neville-neil.com X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Jul 2014 01:40:31 -0000 Howdy, Turns out that the Jenkins hash we have has been surpassed by the Murmur3 hash. Switching to Murmur3 has increases PF's speed by 12% on a null forwarding test, i.e. a test in which PF looks at every packet but doesn't taken an action. Review here: https://phabric.freebsd.org/D406 Best, George