Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751682AbaFFM1K (ORCPT ); Fri, 6 Jun 2014 08:27:10 -0400 Received: from mail-qg0-f46.google.com ([209.85.192.46]:32960 "EHLO mail-qg0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750929AbaFFM1I (ORCPT ); Fri, 6 Jun 2014 08:27:08 -0400 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 To: Michal Hocko Cc: Linux Kernel Mailing List , "linux-mm@kvack.org" , Andrew Morton , Linus Torvalds , Mel Gorman , KAMEZAWA Hiroyuki , Rik van Riel 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 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 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/