From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 063E0C433E0 for ; Wed, 29 Jul 2020 02:42:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D47272078E for ; Wed, 29 Jul 2020 02:42:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=vfemail.net header.i=@vfemail.net header.b="ZG+6AwQc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731155AbgG2CmX (ORCPT ); Tue, 28 Jul 2020 22:42:23 -0400 Received: from nl101-3.vfemail.net ([149.210.219.33]:12627 "EHLO nl101-3.vfemail.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731120AbgG2CmW (ORCPT ); Tue, 28 Jul 2020 22:42:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=vfemail.net; h=date:from :to:cc:subject:message-id:in-reply-to:references:mime-version :content-type:content-transfer-encoding; s=2018; bh=FmncsGltNbBm 9DrnbETpoZufhhj5tXE7ZJm+sjYOeS8=; b=ZG+6AwQc6INJ7Yvl7GWEGEP4II9M fDCwnVelBLcnc4pGN2JabiybdrfNdyMwVFe3i43sw05IjTIpQ0vibjCv8hbjPhmp 9Wg015n64hilK9h/df02sLQtriemcY1/ZUovJ9qN2Vmt4A0rvR3aJpysiirSz0ug yOUI21M8LE8jBPA= Received: (qmail 93195 invoked from network); 29 Jul 2020 02:35:42 -0000 Received: by simscan 1.4.0 ppid: 93122, pid: 93191, t: 0.2773s scanners:none Received: from unknown (HELO d3d3MTkyLnZmZW1haWwubmV0) (aGdudGt3aXNAdmZlbWFpbC5uZXQ=@MTkyLjE2OC4xLjE5Mg==) by nl101.vfemail.net with ESMTPA; 29 Jul 2020 02:35:41 -0000 Date: Tue, 28 Jul 2020 22:34:40 -0400 From: David Niklas To: reiserfs-devel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: Re: PROBLEM: IO lockup on reiserfs FS. Message-ID: <20200728223440.0fd8681e@Phenom-II-x6.niklas.com> In-Reply-To: <20200728222041.5d88b2e1@Phenom-II-x6.niklas.com> References: <20200728222041.5d88b2e1@Phenom-II-x6.niklas.com> X-Mailer: Claws Mail 3.17.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I should add that in chasing down this bug I have tried all the IO schedulers available (noop deadline and cfq). Cfq is the one I'm now using to reproduce this. Also, I don't know if it makes a difference, but when the system first starts up it takes 20m to get from the login manager to having my web browsers restart and get all their pages from online. It might be because there is a lot of IO going on or it might be that there are several stalls in the scheduling; just not bad enough to cause a hung task problem like above.