From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id E13FA90013A for ; Tue, 21 Jun 2011 12:28:10 -0400 (EDT) Received: from wpaz9.hot.corp.google.com (wpaz9.hot.corp.google.com [172.24.198.73]) by smtp-out.google.com with ESMTP id p5LGS6Ec012311 for ; Tue, 21 Jun 2011 09:28:06 -0700 Received: from qwc9 (qwc9.prod.google.com [10.241.193.137]) by wpaz9.hot.corp.google.com with ESMTP id p5LGRcLd002545 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NOT) for ; Tue, 21 Jun 2011 09:28:05 -0700 Received: by qwc9 with SMTP id 9so1888287qwc.41 for ; Tue, 21 Jun 2011 09:28:05 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <4E00C483.5080302@5t9.de> References: <4E00AFE6.20302@5t9.de> <4E00C483.5080302@5t9.de> Date: Tue, 21 Jun 2011 09:28:05 -0700 Message-ID: Subject: Re: "make -j" with memory.(memsw.)limit_in_bytes smaller than required -> livelock, even for unlimited processes From: Ying Han Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Lutz Vieweg Cc: Balbir Singh , Daisuke Nishimura , KAMEZAWA Hiroyuki , linux-mm@kvack.org On Tue, Jun 21, 2011 at 9:19 AM, Lutz Vieweg wrote: > On 06/21/2011 06:01 PM, Ying Han wrote: >> >> The following patch might not be the root-cause of livelock, but >> should reduce the [kworker/*] in your case. >> >> =A0From d1372da4d3c6f8051b5b1cf7b5e8b45a8094b388 Mon Sep 17 00:00:00 200= 1 >> >> Can you give a try? > > I will first need to move this test to a machine (like my Laptop) > that I can more aggressively reboot without disturbing the > developers on the shared hardware. Will do that asap. > >> I don't know which kernel you are using in case >> you don't have this patched yet. > > 2.6.39. > 5 out of 6 hunks in your patch apply to this version, 1 is rejected - > so I guess I should upgrade to a more recent kernel, first. > Would 2.6.39.1 be sufficient or would some non-release kernel > (from which git repository?) be required? Last time I tried was build on mmotm-2011-05-12-15-52 with the patch. But I assume you can also patch it on top of 2.6.39. Meantime, I am trying to reproduce your livelock on my host with kernbench. --Ying > > Regards, > > Lutz Vieweg > -- 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