From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754286Ab1BVQgf (ORCPT ); Tue, 22 Feb 2011 11:36:35 -0500 Received: from e3.ny.us.ibm.com ([32.97.182.143]:54585 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753608Ab1BVQge (ORCPT ); Tue, 22 Feb 2011 11:36:34 -0500 Subject: Re: [PATCH 8/8] Add VM counters for transparent hugepages From: Dave Hansen To: Andi Kleen Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, aarcange@redhat.com, lwoodman@redhat.com, Andi Kleen In-Reply-To: <1298315270-10434-9-git-send-email-andi@firstfloor.org> References: <1298315270-10434-1-git-send-email-andi@firstfloor.org> <1298315270-10434-9-git-send-email-andi@firstfloor.org> Content-Type: text/plain; charset="ANSI_X3.4-1968" Date: Tue, 22 Feb 2011 08:36:26 -0800 Message-ID: <1298392586.9829.22566.camel@nimitz> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2011-02-21 at 11:07 -0800, Andi Kleen wrote: > From: Andi Kleen > > I found it difficult to make sense of transparent huge pages without > having any counters for its actions. Add some counters to vmstat > for allocation of transparent hugepages and fallback to smaller > pages. > > Optional patch, but useful for development and understanding the system. Very nice. I did the same thing, splits-only. I also found this stuff a must-have for trying to do any work with transparent hugepages. It's just impossible otherwise. Acked-by: Dave Hansen