From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f72.google.com (mail-wm0-f72.google.com [74.125.82.72]) by kanga.kvack.org (Postfix) with ESMTP id 013986B007E for ; Sun, 17 Apr 2016 14:53:33 -0400 (EDT) Received: by mail-wm0-f72.google.com with SMTP id w143so52734577wmw.2 for ; Sun, 17 Apr 2016 11:53:32 -0700 (PDT) Received: from mail-wm0-f42.google.com (mail-wm0-f42.google.com. [74.125.82.42]) by mx.google.com with ESMTPS id f193si22974337wmf.21.2016.04.17.11.53.31 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 17 Apr 2016 11:53:31 -0700 (PDT) Received: by mail-wm0-f42.google.com with SMTP id v188so92217103wme.1 for ; Sun, 17 Apr 2016 11:53:31 -0700 (PDT) Date: Sun, 17 Apr 2016 14:53:28 -0400 From: Michal Hocko Subject: Re: [Bug 107771] New: Single process tries to use more than 1/2 physical RAM, OS starts thrashing Message-ID: <20160417185327.GC9051@dhcp22.suse.cz> References: <20160415121549.47e404e3263c71564929884e@linux-foundation.org> <1460748682.25336.41.camel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1460748682.25336.41.camel@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: theosib@gmail.com Cc: Andrew Morton , linux-mm@kvack.org, bugzilla-daemon@bugzilla.kernel.org, Johannes Weiner , Mel Gorman , Rik van Riel On Fri 15-04-16 15:31:22, Rik van Riel wrote: > On Fri, 2016-04-15 at 12:15 -0700, Andrew Morton wrote: > > (switched to email. Please respond via emailed reply-to-all, not via > > the > > bugzilla web interface). > > > > This is ... interesting. > > First things first. What is the value of > /proc/sys/vm/zone_reclaim? Also snapshots of /proc/vmstat taken every 1s or so while you see the trashing would be helpful. -- Michal Hocko SUSE Labs -- 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/ . Don't email: email@kvack.org