Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760593AbXEPGMR (ORCPT ); Wed, 16 May 2007 02:12:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756280AbXEPGMJ (ORCPT ); Wed, 16 May 2007 02:12:09 -0400 Received: from holomorphy.com ([66.93.40.71]:52449 "EHLO holomorphy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756431AbXEPGMI (ORCPT ); Wed, 16 May 2007 02:12:08 -0400 Date: Tue, 15 May 2007 23:12:59 -0700 From: William Lee Irwin III To: dean gaudet Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.21 numa policy and huge pages not working Message-ID: <20070516061259.GZ19966@holomorphy.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1200 Lines: 24 On Tue, May 15, 2007 at 10:41:06PM -0700, dean gaudet wrote: > prior to 2.6.21 i could "numactl --interleave=all" and use SHM_HUGETLB and > the interleave policy would be respected. as of 2.6.21 it doesn't seem to > respect the policy on SHM_HUGETLB request. > see test program below. > output from pre-2.6.21: > 2ab196200000 interleave=0-3 file=/2\040(deleted) huge dirty=32 N0=8 N1=8 N2=8 N3=8 > 2ab19a200000 default file=/SYSV00000000\040(deleted) dirty=16384 active=0 N0=4096 N1=4096 N2=4096 N3=4096 > output from 2.6.21: > 2b49b1c00000 default file=/10\040(deleted) huge dirty=32 N3=32 > 2b49b5c00000 default file=/SYSV00000000\040(deleted) dirty=16384 active=0 N0=4096 N1=4096 N2=4096 N3=4096 > was this an intentional behaviour change? it seems to be only affecting > SHM_HUGETLB allocations. (i haven't tested hugetlbfs yet.) > run with "numactl --interleave=all ./shmtest" This was not intentional. I'll search for where it broke. -- wli - 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/