From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261724AbTJMMIV (ORCPT ); Mon, 13 Oct 2003 08:08:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261752AbTJMMIV (ORCPT ); Mon, 13 Oct 2003 08:08:21 -0400 Received: from holomorphy.com ([66.224.33.161]:57733 "EHLO holomorphy") by vger.kernel.org with ESMTP id S261724AbTJMMIS (ORCPT ); Mon, 13 Oct 2003 08:08:18 -0400 Date: Mon, 13 Oct 2003 05:11:09 -0700 From: William Lee Irwin III To: Kirill Korotaev Cc: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [PATCH] Invalidate_inodes can be very slow Message-ID: <20031013121109.GJ16158@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Kirill Korotaev , Andrew Morton , linux-kernel@vger.kernel.org References: <200310131318.09234.kk@sw.ru> <200310131545.01779.kk@sw.ru> <20031013115458.GI16158@holomorphy.com> <200310131602.20479.kk@sw.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200310131602.20479.kk@sw.ru> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At some point in the past, I wrote: >> Sorry if I was unclear, I had in mind SMP performance testing of mount >> and unmount -heavy workloads, like uni setups with many automounted fs's, >> not stability testing per se. On Mon, Oct 13, 2003 at 04:02:20PM +0400, Kirill Korotaev wrote: > Oh, sorry for misunderstanding. > In our internal testcase on 8-CPU 8Gb RAM machine with 4gb split kernel > w/o this patch mount/umount test longs in many-many (>10) times longer. > Moreover, during the test machine is very slow (due to lock_kernel) > and typing simple commands takes up to 30 seconds or so. > I think such a long hangs are due to number of umounts executed > subsequently. But ofcourse it's not numbers, just for you to know where > the patch comes from :) Is this testcase available and/or trivial? Actually, even if it's trivial it might just save us the pain of writing the scripts ourselves. -- wli