From mboxrd@z Thu Jan 1 00:00:00 1970 From: "kalyan tejaswi" Subject: degradation in bridging performance of 5% in 2.6.20 when compared to 2.6.19 Date: Fri, 16 Feb 2007 11:56:29 +0530 Message-ID: <9dd3c65d0702152226h6bfc4e22q3f3b04d97d8da1fb@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from qb-out-0506.google.com ([72.14.204.239]:11035 "EHLO qb-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932655AbXBPG0a (ORCPT ); Fri, 16 Feb 2007 01:26:30 -0500 Received: by qb-out-0506.google.com with SMTP id z8so241007qbc for ; Thu, 15 Feb 2007 22:26:29 -0800 (PST) Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hi all, I have been comparing bridging performance for 2.6.20 and 2.6.19 kernels. The kenel configurations are identical for both the kernels. I use D-Link cards (8139too driver) for the Malta 4Kc board. The setup is: netperf client <-------> malta 4Kc <---------> netperf server. The throughput statistics (in 10^6 bits/second) are: 2.6.19 2.6.20 routing 30.2 30.16 bridging 32.35 30.81 I observe that there has been a degradation in bridging performance of 5% in 2.6.20 when compared to 2.6.19. Has anyone observed similar behaviour? Any inputs or suggestions are welcome. Regards Kalyan