From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 30 Jan 2001 12:13:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 30 Jan 2001 12:13:25 -0500 Received: from vger.timpanogas.org ([207.109.151.240]:38925 "EHLO vger.timpanogas.org") by vger.kernel.org with ESMTP id ; Tue, 30 Jan 2001 12:13:11 -0500 Date: Tue, 30 Jan 2001 11:07:55 -0700 From: "Jeff V. Merkey" To: Todd Cc: linux-kernel@vger.kernel.org, jmerkey@timpanogas.org Subject: Re: [ANNOUNCE] Dolphin PCI-SCI RPM Drivers 1.1-4 released Message-ID: <20010130110755.A18554@vger.timpanogas.org> In-Reply-To: <20010130101958.A18047@vger.timpanogas.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: ; from todd@unm.edu on Tue, Jan 30, 2001 at 10:07:07AM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 30, 2001 at 10:07:07AM -0700, Todd wrote: > folx, > > On Tue, 30 Jan 2001, Jeff V. Merkey wrote: > > What numbers does G-Enet provide > > doing userspace -> userspace transfers, and at what processor > > overhead? > > using stock 2.4 kernel and alteon acenic cards with stock firmware we're > seeing 993 MBps userspace->userspace (running netperf UDP_STREAM tests, > which run as userspace client and server) with 88% CPU utilization. > > Using a modified version of the firmware that we wrote we're getting > 993Mbps with 55% CPU utilization. I was at 2% utilization running the PCI-SCI tests on a D320 PSB64 adapter. I doubt you would get good numbers on the box I used with G-Enet -- this box is limited to 70 MB/S PCI throughput. > > > I posted the **ACCURATE** numbers from my test, but I did clarify that I > > was using a system with a limp PCI bus. > > > > Jeff > > i appreciate that. i'm just trying to figure out why the numbers are so > low compared to the network speed you mentioned. Because I used an el-cheapo AMD box. I provided the info more for a 2.2.X/2.4.X comparison than anything. Jeff > > todd - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/