From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 980AADDEBD for ; Fri, 22 Jun 2007 01:32:31 +1000 (EST) In-Reply-To: <20070621141519.GQ5417@chiana.homelinux.org> References: <20070621141519.GQ5417@chiana.homelinux.org> Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <0090CCD0-EBB4-4475-BF03-36AF41E2DDA1@kernel.crashing.org> From: Kumar Gala Subject: Re: network load 8245 vs. 8347E Date: Thu, 21 Jun 2007 10:33:21 -0500 To: Marc Leeman Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Jun 21, 2007, at 9:15 AM, Marc Leeman wrote: > Ok, I guess it's comparing apples to lemons here, but I'll have a > go at > it anyway. > > I'm trying to figure out why partial network decoding on an 8347E is > disappointingly slow wrt an older 8245 processor. > > When simply receiving (cf. att) a multicast stream of 12 Mbps, an > 8245/uclibc 0.9.28 @350 MHz, ppc arch , the system runs smoothly at a > load of around 4% on a e100 based MAC (pci: 8086:1209 ). > > When doing the same thing on 8347e/0.9.28 @400 Mhz, powerpc arch, the > system is loaded at around 34%. > > any clues? How are you measuring load? I'm assuming the 8245 and 8347 are using the same kernel. - k