Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030750AbbDWUX1 (ORCPT ); Thu, 23 Apr 2015 16:23:27 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:35197 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030497AbbDWUXY (ORCPT ); Thu, 23 Apr 2015 16:23:24 -0400 Date: Thu, 23 Apr 2015 13:23:23 -0700 From: Andrew Morton To: Eric B Munson Cc: Sri Jayaramappa , Shuah Khan , linux-kernel@vger.kernel.org, linux-api@vger.kernel.org Subject: Re: [PATCH V2] Test compaction of mlocked memory Message-Id: <20150423132323.a3bd1dcdc94a2da3ca06a30d@linux-foundation.org> In-Reply-To: <20150423184134.GF2282@akamai.com> References: <1429813301-27216-1-git-send-email-sjayaram@akamai.com> <20150423184134.GF2282@akamai.com> X-Mailer: Sylpheed 3.4.1 (GTK+ 2.24.23; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1480 Lines: 41 On Thu, 23 Apr 2015 14:41:34 -0400 Eric B Munson wrote: > On Thu, 23 Apr 2015, Sri Jayaramappa wrote: > > > Commit commit 5bbe3547aa3b ("mm: allow compaction of unevictable pages") > > introduced a sysctl that allows userspace to enable scanning of locked > > pages for compaction. This patch introduces a new test which fragments > > main memory and attempts to allocate a number of huge pages to exercise > > this compaction logic. > > > > Tested on machines with up to 32 GB RAM. With the patch a much larger > > number of huge pages can be allocated than on the kernel without the > > patch. > > > > Example output: > > On a machine with 16 GB RAM: > > sudo make run_tests vm > > ... > > ----------------------- > > running compaction_test > > ----------------------- > > No of huge pages allocated = 3834 > > [PASS] > > ... > > > > Signed-off-by: Sri Jayaramappa > > Cc: linux-kernel@vger.kernel.org > > Cc: linux-api@vger.kernel.org > > Cc: Andrew Morton > > Cc: Eric B Munson > > Reviewed-by: Eric B Munson Acked-by: Andrew Morton I'm assuming that Shuah will process this one? -- 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/