From owner-freebsd-performance@FreeBSD.ORG Sun Jun 29 08:51:53 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0BACC37B435 for ; Sun, 29 Jun 2003 08:51:53 -0700 (PDT) Received: from sabre.velocet.net (sabre.velocet.net [216.138.209.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 126C343FDD for ; Sun, 29 Jun 2003 08:51:51 -0700 (PDT) (envelope-from dgilbert@velocet.ca) Received: from trooper.velocet.ca (trooper.velocet.net [216.138.242.2]) by sabre.velocet.net (Postfix) with ESMTP id AFC5F138945; Sun, 29 Jun 2003 11:51:42 -0400 (EDT) Received: by trooper.velocet.ca (Postfix, from userid 66) id 1214874DC4; Sun, 29 Jun 2003 11:51:42 -0400 (EDT) Received: by canoe.velocet.net (Postfix, from userid 101) id 60F3E4AD1; Sun, 29 Jun 2003 11:51:38 -0400 (EDT) From: David Gilbert MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16127.2826.306427.946086@canoe.velocet.net> Date: Sun, 29 Jun 2003 11:51:38 -0400 To: Craig Reyenga In-Reply-To: <001f01c33e0f$1f4716d0$0200000a@fireball> References: <20030628190036.0E06B37B405@hub.freebsd.org> <000f01c33dad$1595a0f0$e602a8c0@flatline> <16126.9805.829406.368426@canoe.velocet.net> <000901c33dd1$12268780$0200000a@fireball> <16126.19861.842507.318997@canoe.velocet.net> <001f01c33e0f$1f4716d0$0200000a@fireball> X-Mailer: VM 7.14 under 21.4 (patch 12) "Portable Code" XEmacs Lucid cc: David Gilbert cc: freebsd-performance@freebsd.org Subject: Re: Tuning Gigabit X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Jun 2003 15:51:53 -0000 >>>>> "Craig" == Craig Reyenga writes: >> Now some boards I've tested (like the nvidia chipset) are strangely >> limited to 100megabit. I can't explain this. It seems low no >> matter how you cut it. Craig> As I mentioned in a previous email, this is horrible. Does this Craig> manifest itself with disk controllers and other high-bandwidth Craig> devices? Well... I don't have any disk controllers to test, but I've verified this behaviour with em, bge, sk, and nge chipsets. Of these, as I've said before, the em shines. The bge has good performance, too ... but we've seen a lot of corrupted routed packets ... it has some interaction with some motherboard chipsets. Craig> I look forward to seeing a paper on this; it would certainly Craig> assist people in hardware purchase decisions. It's in the back of my mind. I don't think I'll have time for this BSDCon, but maybe soon thereafter. It's getting to the point where we should have a BSD Journal. Dave. -- ============================================================================ |David Gilbert, Velocet Communications. | Two things can only be | |Mail: dgilbert@velocet.net | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================