From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754623AbaHGBvN (ORCPT ); Wed, 6 Aug 2014 21:51:13 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:40619 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753909AbaHGBvL (ORCPT ); Wed, 6 Aug 2014 21:51:11 -0400 Message-ID: <53E2DB4C.3060109@oracle.com> Date: Wed, 06 Aug 2014 21:50:04 -0400 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Christoph Lameter CC: akpm@linux-foundation.org, Gilad Ben-Yossef , Thomas Gleixner , Tejun Heo , John Stultz , Mike Frysinger , Minchan Kim , Hakan Akkan , Max Krasnyansky , Frederic Weisbecker , "Paul E. McKenney" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, hughd@google.com, viresh.kumar@linaro.org, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org Subject: Re: vmstat: On demand vmstat workers V8 References: <53D31101.8000107@oracle.com> <53DFFD28.2030502@oracle.com> <53E159F6.7080603@oracle.com> In-Reply-To: X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/06/2014 10:12 AM, Christoph Lameter wrote: > On Tue, 5 Aug 2014, Sasha Levin wrote: > >> > I can easily trigger it by cranking up the cpu hotplug code. Just try to >> > frequently offline and online cpus, it should reproduce quickly. > Thats what I thought. > > The test was done with this fix applied right? Nope, I never saw the patch before. Applied it and the problem goes away. Thanks! Thanks, Sasha From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f47.google.com (mail-pa0-f47.google.com [209.85.220.47]) by kanga.kvack.org (Postfix) with ESMTP id 6480F6B0035 for ; Wed, 6 Aug 2014 21:50:58 -0400 (EDT) Received: by mail-pa0-f47.google.com with SMTP id kx10so4438390pab.20 for ; Wed, 06 Aug 2014 18:50:58 -0700 (PDT) Received: from aserp1040.oracle.com (aserp1040.oracle.com. [141.146.126.69]) by mx.google.com with ESMTPS id gi1si2206568pbd.100.2014.08.06.18.50.56 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 06 Aug 2014 18:50:57 -0700 (PDT) Message-ID: <53E2DB4C.3060109@oracle.com> Date: Wed, 06 Aug 2014 21:50:04 -0400 From: Sasha Levin MIME-Version: 1.0 Subject: Re: vmstat: On demand vmstat workers V8 References: <53D31101.8000107@oracle.com> <53DFFD28.2030502@oracle.com> <53E159F6.7080603@oracle.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: akpm@linux-foundation.org, Gilad Ben-Yossef , Thomas Gleixner , Tejun Heo , John Stultz , Mike Frysinger , Minchan Kim , Hakan Akkan , Max Krasnyansky , Frederic Weisbecker , "Paul E. McKenney" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, hughd@google.com, viresh.kumar@linaro.org, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org On 08/06/2014 10:12 AM, Christoph Lameter wrote: > On Tue, 5 Aug 2014, Sasha Levin wrote: > >> > I can easily trigger it by cranking up the cpu hotplug code. Just try to >> > frequently offline and online cpus, it should reproduce quickly. > Thats what I thought. > > The test was done with this fix applied right? Nope, I never saw the patch before. Applied it and the problem goes away. Thanks! Thanks, Sasha -- 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