From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S272651AbTHPO6t (ORCPT ); Sat, 16 Aug 2003 10:58:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S272977AbTHPO6t (ORCPT ); Sat, 16 Aug 2003 10:58:49 -0400 Received: from natsmtp01.webmailer.de ([192.67.198.81]:44677 "EHLO post.webmailer.de") by vger.kernel.org with ESMTP id S272651AbTHPO6s (ORCPT ); Sat, 16 Aug 2003 10:58:48 -0400 Message-ID: <3F3E46E6.4000906@softhome.net> Date: Sat, 16 Aug 2003 16:59:50 +0200 From: "Ihar 'Philips' Filipau" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030701 X-Accept-Language: en-us, en MIME-Version: 1.0 To: John Newbie CC: Linux Kernel Mailing List Subject: [OT] Re: ide drives performance issues, maybe related with buffer cache. References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org John Newbie wrote: > >> RTFM , and STOP SPAMMING > > > I've read them, see my previous posts. If you have nothing to say, > better stay silent. > Ok, have a look at 2.6-test2, the same picture, slightly faster, though. > And 2.6 by default set unmaskirq to 1. > IO is really bursty (see post by insecure) opposite to `enemy I`. > If you are really newbie in Linux - I can advice you to try FreeBSD. By default FreeBSD (as of version 3.2) is much less aggressive in caching and buffering. I never saw Linux greedy caching/buffering working good - it always has some stupid edge cases when it is easier/faster to power-off/power-on/fsck system, rather than to get to console and kill offending process. But sure - Linux's throughput is much higher that in *BSD. Benchmarketing.