From owner-freebsd-current@FreeBSD.ORG Tue May 4 13:15:16 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8812716A4CE for ; Tue, 4 May 2004 13:15:16 -0700 (PDT) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.FreeBSD.org (Postfix) with ESMTP id 16E5543D58 for ; Tue, 4 May 2004 13:15:16 -0700 (PDT) (envelope-from scottl@freebsd.org) Received: from freebsd.org (g4.samsco.home [192.168.0.12]) by pooker.samsco.org (8.12.10/8.12.10) with ESMTP id i44KJMu6020092; Tue, 4 May 2004 14:19:22 -0600 (MDT) (envelope-from scottl@freebsd.org) Message-ID: <4097F99C.4070504@freebsd.org> Date: Tue, 04 May 2004 14:14:20 -0600 From: Scott Long User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7a) Gecko/20040214 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Kris Kennaway References: <20040504200657.GA22430@xor.obsecurity.org> In-Reply-To: <20040504200657.GA22430@xor.obsecurity.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=0.0 required=3.8 tests=none autolearn=no version=2.63 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on pooker.samsco.org cc: freebsd-current@freebsd.org cc: Gerrit Nagelhout Subject: Re: 4.7 vs 5.2.1 SMP/UP bridging performance X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 May 2004 20:15:16 -0000 Kris Kennaway wrote: > On Tue, May 04, 2004 at 03:55:32PM -0400, Gerrit Nagelhout wrote: > > >>I would like to move to CURRENT for new hardware support, and the >>ability to properly use multi-threading in user-space, but can't do >>this until the performance bottlenecks are solved. I realize that >>5.x is still a work in progress and hasn't been tuned as well as 4.7 >>yet, but are there any plans for optimizations in this area? Does >>anyone have any suggestions on what else I can try? > > > Try rwatson's netperf patches: > > http://www.watson.org/~robert/freebsd/netperf/ > > There is at least one outstanding panic condition known, but more > testing will be a great help. > > Kris > > P.S. You didn't mention the status of WITNESS, but I'm assuming you > read the docs and disabled it since it's a huge performance killer. WITNESS and INVARIANTS are turned off for the 5.2.1 release bits. However, the debug.mpsafenet sysctl is also turned off. Turning this on might give a significant performance boost for bridging. Scott