From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id EA6EE9000BD for ; Fri, 30 Sep 2011 17:16:32 -0400 (EDT) Received: from hpaq6.eem.corp.google.com (hpaq6.eem.corp.google.com [172.25.149.6]) by smtp-out.google.com with ESMTP id p8ULGT2i019398 for ; Fri, 30 Sep 2011 14:16:29 -0700 Received: from qadz30 (qadz30.prod.google.com [10.224.38.30]) by hpaq6.eem.corp.google.com with ESMTP id p8ULG7jj004267 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NOT) for ; Fri, 30 Sep 2011 14:16:28 -0700 Received: by qadz30 with SMTP id z30so854617qad.13 for ; Fri, 30 Sep 2011 14:16:25 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20110930181914.GA17817@mgebm.net> References: <1317170947-17074-1-git-send-email-walken@google.com> <20110929164319.GA3509@mgebm.net> <4186d5662b3fb21af1b45f8a335414d3@mgebm.net> <20110930181914.GA17817@mgebm.net> Date: Fri, 30 Sep 2011 14:16:25 -0700 Message-ID: Subject: Re: [PATCH 0/9] V2: idle page tracking / working set estimation From: Michel Lespinasse Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Eric B Munson Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , KAMEZAWA Hiroyuki , Dave Hansen , Rik van Riel , Balbir Singh , Peter Zijlstra , Andrea Arcangeli , Johannes Weiner , KOSAKI Motohiro , Hugh Dickins , Michael Wolf On Fri, Sep 30, 2011 at 11:19 AM, Eric B Munson wrote: > I am able to recreate on a second desktop I have here (same model CPU but= a > different MB so I am fairly sure it isn't dying hardware). =A0It looks to= me like > a CPU softlocks and it stalls the process active there, so most recently = that > was XOrg. =A0The machine lets me login via ssh for a few minutes, but thi= ngs like > ps and cat or /proc files will start to work and give some output but han= g. > I cannot call reboot, nor can I sync the fs and reboot via SysRq. =A0My n= ext step > is to setup a netconsole to see if anything comes out in the syslog that = I > cannot see. I haven't had time to try & reproduce locally yet (apologies - things have been coming up at me). But a prime suspect would be a bad interaction with CONFIG_MEMORY_HOTPLUG, as Kamezama remarked in his reply to patch 4. I think this could be the most likely cause of what you're observing. --=20 Michel "Walken" Lespinasse A program is never fully debugged until the last user dies. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org