Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753973AbaLMAXS (ORCPT ); Fri, 12 Dec 2014 19:23:18 -0500 Received: from mail-qc0-f177.google.com ([209.85.216.177]:39013 "EHLO mail-qc0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753930AbaLMAXR (ORCPT ); Fri, 12 Dec 2014 19:23:17 -0500 MIME-Version: 1.0 In-Reply-To: <548B8046.4040808@oracle.com> References: <20141201230339.GA20487@ret.masoncoding.com> <1417529606.3924.26.camel@maggy.simpson.net> <1417540493.21136.3@mail.thefacebook.com> <20141203184111.GA32005@redhat.com> <20141205171501.GA1320@redhat.com> <1417806247.4845.1@mail.thefacebook.com> <20141211145408.GB16800@redhat.com> <548A122C.8000906@oracle.com> <548A2165.9030107@oracle.com> <548B8046.4040808@oracle.com> Date: Fri, 12 Dec 2014 16:23:16 -0800 X-Google-Sender-Auth: Is5LFLPvse-eE-WQmbZJskeGMYk Message-ID: Subject: Re: frequent lockups in 3.18rc4 From: Linus Torvalds To: Sasha Levin Cc: Dave Jones , Chris Mason , Mike Galbraith , Ingo Molnar , Peter Zijlstra , =?UTF-8?Q?D=C3=A2niel_Fraga?= , "Paul E. McKenney" , Linux Kernel Mailing List Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Dec 12, 2014 at 3:54 PM, Sasha Levin wrote: > > I ran bisection on trinity, rather than the kernel, and got the following > result: Heh. That commit is pretty small, but I guess the effect of having a number of regular files open and being used on the trinity loads can be almost arbitrarily large. Where do those files get opened? What filesystem? That might actually explain your and DaveJ's big differences: you are running in virtualization, and I remember some 9p traces with virtio etc from your reports. While DaveJ obviously runs on bare hardware, possibly on /tmp and tmpfs? > I've been running trinity f2be2d5ff^ on -next for two hours now, and there's > no sign of a lockup. Previously it took ~10 minutes trigger. DaveJ? Is there anything limiting the size of those files? Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/