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, 17 Sep 2002 17:30:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 17 Sep 2002 17:30:42 -0400 Received: from pizda.ninka.net ([216.101.162.242]:35203 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Tue, 17 Sep 2002 17:30:42 -0400 Date: Tue, 17 Sep 2002 14:26:35 -0700 (PDT) Message-Id: <20020917.142635.114214508.davem@redhat.com> To: akpm@digeo.com Cc: manfred@colorfullife.com, linux-netdev@oss.sgi.com, linux-kernel@vger.kernel.org Subject: Re: Info: NAPI performance at "low" loads From: "David S. Miller" In-Reply-To: <3D879F59.6BDF9443@digeo.com> References: <3D87881F.4070808@colorfullife.com> <20020917.135939.52477700.davem@redhat.com> <3D879F59.6BDF9443@digeo.com> X-Mailer: Mew version 2.1 on Emacs 21.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: Andrew Morton Date: Tue, 17 Sep 2002 14:32:09 -0700 There is a similar background loadtester at http://www.zip.com.au/~akpm/linux/#zc . It's fairly fancy - I wrote it for measuring networking efficiency. It doesn't seem to have any PCisms.... Thanks I'll check it out, but meanwhile I hacked up sparc specific assembler for manfred's code :-) (I measured similar regression using an ancient NAPIfied 3c59x a long time ago). Well, it is due to the same problems manfred saw initially, namely just a crappy or buggy NAPI driver implementation. :-)