From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qg0-f54.google.com (mail-qg0-f54.google.com [209.85.192.54]) by kanga.kvack.org (Postfix) with ESMTP id 0DB016B0035 for ; Fri, 6 Jun 2014 08:27:09 -0400 (EDT) Received: by mail-qg0-f54.google.com with SMTP id q108so4149052qgd.41 for ; Fri, 06 Jun 2014 05:27:08 -0700 (PDT) Received: from mail-qg0-x22f.google.com (mail-qg0-x22f.google.com [2607:f8b0:400d:c04::22f]) by mx.google.com with ESMTPS id s49si12545062qgs.97.2014.06.06.05.27.08 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 06 Jun 2014 05:27:08 -0700 (PDT) Received: by mail-qg0-f47.google.com with SMTP id j107so4184583qga.34 for ; Fri, 06 Jun 2014 05:27:08 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20140605133747.GB2942@dhcp22.suse.cz> References: <53905594d284f_71f12992fc6a@nysa.notmuch> <20140605133747.GB2942@dhcp22.suse.cz> Date: Fri, 6 Jun 2014 07:27:08 -0500 Message-ID: Subject: Re: Interactivity regression since v3.11 in mm/vmscan.c From: Felipe Contreras Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Linux Kernel Mailing List , "linux-mm@kvack.org" , Andrew Morton , Linus Torvalds , Mel Gorman , KAMEZAWA Hiroyuki , Rik van Riel On Thu, Jun 5, 2014 at 8:37 AM, Michal Hocko wrote: > We had a similar report for opensuse. The common part was that there was > an IO to a slow USB device going on. Actually I've managed to narrow down my synthetic test, and all I need is to copy a big file, and it even happens reading and writing to the SSD (although the stall is less severe). Here's the test: http://pastie.org/9264124 Just pass a big file as the first argument. I don't have much memory in this machine, so I guess running out of memory is the trigger. -- Felipe Contreras -- 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