From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 19 Oct 2005 16:54:21 +0100 (BST) Received: from extgw-uk.mips.com ([62.254.210.129]:38414 "EHLO bacchus.net.dhis.org") by ftp.linux-mips.org with ESMTP id S3465650AbVJSPyG (ORCPT ); Wed, 19 Oct 2005 16:54:06 +0100 Received: from dea.linux-mips.net (localhost.localdomain [127.0.0.1]) by bacchus.net.dhis.org (8.13.4/8.13.1) with ESMTP id j9JFrvS8017847; Wed, 19 Oct 2005 16:53:57 +0100 Received: (from ralf@localhost) by dea.linux-mips.net (8.13.4/8.13.4/Submit) id j9JFrvjc017845; Wed, 19 Oct 2005 16:53:57 +0100 Date: Wed, 19 Oct 2005 16:53:57 +0100 From: Ralf Baechle To: kernel coder Cc: linux-mips@linux-mips.org Subject: Re: Fwd: How to improve performance of 2.6 kernel Message-ID: <20051019155357.GH2616@linux-mips.org> References: <43539ADF.6040504@gentoo.org> <00b201c5d32e$2de780b0$0302a8c0@Ulysses> <3888b5a785ca8313b05d10eec9871fe6@embeddedalley.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 9272 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Wed, Oct 19, 2005 at 10:55:01AM +0500, kernel coder wrote: > I did lmbench benchmarks tests... and the results i got were pretty > weird.. I am attaching the jpegs :) of the graphs i made in MS Excel. We're happy with cold, raw ASCII numbers :) > Btw, I have implemented NAPI in both 2.4.20 and 2.6.10. I ported the > code to linux-2.6 in order to increase the board's efficiency but I'm > quite dissapointed with the results so far :(. NAPI is doing it's job which is keeping a system responsive under extreme loads very well. The pre-NAPI behaviour was simply locking up thus making systems easily DOS-able. NAPI is not meant to improve latency; it isn't meant but frequently mistaken to. Ralf