From owner-freebsd-smp Fri Oct 11 17:13:16 2002 Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1359337B41B for ; Fri, 11 Oct 2002 17:13:14 -0700 (PDT) Received: from swordfish.cs.caltech.edu (swordfish.cs.caltech.edu [131.215.44.124]) by mx1.FreeBSD.org (Postfix) with ESMTP id AFD7A43E42 for ; Fri, 11 Oct 2002 17:13:13 -0700 (PDT) (envelope-from chengjin@cs.caltech.edu) Received: from fast2.cs.caltech.edu (fast2.cs.caltech.edu [131.215.45.55]) by swordfish.cs.caltech.edu (Postfix) with ESMTP id E3966DF260; Fri, 11 Oct 2002 17:13:12 -0700 (PDT) Received: from localhost (chengjin@localhost) by fast2.cs.caltech.edu (8.11.6/8.9.3) with ESMTP id g9C0DCX31594; Fri, 11 Oct 2002 17:13:12 -0700 X-Authentication-Warning: fast2.cs.caltech.edu: chengjin owned process doing -bs Date: Fri, 11 Oct 2002 17:13:12 -0700 (PDT) From: Cheng Jin To: Terry Lambert Cc: "freebsd-smp@freebsd.org" , Xiaoliang Wei Subject: Re: SMP + dual GbE In-Reply-To: <3DA765D1.D6C4B92C@mindspring.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org > It may be your SysKonnect card. It's very easy to get full wire > speed with 1500 MTU packets on an 800MHz machine with Tigon III > cards (for example). It's all in the tuning. Sorry, I didn't make myself clear in my previous message. We were able to get 1 Gbps when we pump data through one SysKonnect card (SMP or not). The problem is when we try to use both cards under FreeBSD SMP kernel, the throughput on each card is only 640 Mbps. In fact, using a single-processor kernel, we could get 560 Mbps going through both cards. The cards seem fine, the problem seems to be with the SMP kernel. Thanks, Cheng To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message