From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762610AbbA3P3F (ORCPT ); Fri, 30 Jan 2015 10:29:05 -0500 Received: from mail-wg0-f51.google.com ([74.125.82.51]:42363 "EHLO mail-wg0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762304AbbA3P3D (ORCPT ); Fri, 30 Jan 2015 10:29:03 -0500 Date: Fri, 30 Jan 2015 16:28:59 +0100 From: Michal Hocko To: Christoph Lameter Cc: Vinayak Menon , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, hannes@cmpxchg.org, vdavydov@parallels.com, mgorman@suse.de, minchan@kernel.org Subject: Re: [PATCH v2] mm: vmscan: fix the page state calculation in too_many_isolated Message-ID: <20150130152859.GI15505@dhcp22.suse.cz> References: <20150116154922.GB4650@dhcp22.suse.cz> <54BA7D3A.40100@codeaurora.org> <54BC879C.90505@codeaurora.org> <20150121143920.GD23700@dhcp22.suse.cz> <20150126174606.GD22681@dhcp22.suse.cz> <20150127105242.GC19880@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 27-01-15 10:59:59, Christoph Lameter wrote: > On Tue, 27 Jan 2015, Michal Hocko wrote: > > > I am not following. The idea was to run vmstat_shepherd in a kernel > > thread and waking up as per defined timeout and then check need_update > > for each CPU and call smp_call_function_single to refresh the timer > > rather than building a mask and then calling sm_call_function_many to > > reduce paralel contention on the shared counters. > > Thats ok. OK, I will put that on my todo list and try to find some time to implement it. -- Michal Hocko SUSE Labs