From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753004AbbCPCQC (ORCPT ); Sun, 15 Mar 2015 22:16:02 -0400 Received: from lgeamrelo04.lge.com ([156.147.1.127]:65283 "EHLO lgeamrelo04.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751793AbbCPCQB (ORCPT ); Sun, 15 Mar 2015 22:16:01 -0400 X-Original-SENDERIP: 10.177.220.203 X-Original-MAILFROM: namhyung@kernel.org Date: Mon, 16 Mar 2015 11:10:35 +0900 From: Namhyung Kim To: Ingo Molnar Cc: Arnaldo Carvalho de Melo , Peter Zijlstra , Jiri Olsa , LKML , David Ahern , Minchan Kim , Joonsoo Kim Subject: Re: [RFC/PATCHSET 0/6] perf kmem: Implement page allocation analysis (v1) Message-ID: <20150316021035.GQ943@sejong> References: <1426145571-3065-1-git-send-email-namhyung@kernel.org> <20150312104119.GA5978@gmail.com> <20150312145837.GA1398@danjae> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20150312145837.GA1398@danjae> 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 Thu, Mar 12, 2015 at 11:58:37PM +0900, Namhyung Kim wrote: > On Thu, Mar 12, 2015 at 11:41:19AM +0100, Ingo Molnar wrote: > > So there's one thing that would be useful: to track pages allocated on > > one node, but freed on another. Those kinds of allocation/free > > patterns are especially expensive and might make sense to visualize. > > I think it can be done easily as slab analysis already contains the info. Hmm.. it seems slab events provide the node info but page events don't. Without it, I don't know which node a page is in so cannot determine such cross-node alloc+free patterns. Thanks, Namhyung