From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4255BCC1.9000509@engr.sgi.com> Date: Thu, 07 Apr 2005 18:05:37 -0500 From: Ray Bryant MIME-Version: 1.0 Subject: question on page-migration code Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Hirokazu Takahashi Cc: Marcelo Tosatti , Dave Hansen , linux-mm List-ID: Well, even my previous description is not quite correct. Here are the times for a series of 20 migrations, from nodes 0-3 to 4-7, and then back again: 0.134u 1.425s 0:02.98 52.0% 0+0k 0+0io 1pf+0w 0.124u 0.395s 3:22.11 0.2% 0+0k 0+0io 24pf+0w 0.154u 1.494s 0:03.03 54.1% 0+0k 0+0io 8pf+0w 0.134u 1.137s 1:04.38 1.9% 0+0k 0+0io 28pf+0w 0.119u 0.723s 1:20.16 1.0% 0+0k 0+0io 8pf+0w 0.142u 1.299s 0:39.06 3.6% 0+0k 0+0io 28pf+0w 0.124u 0.526s 2:20.03 0.4% 0+0k 0+0io 0pf+0w 0.135u 1.336s 0:22.18 6.5% 0+0k 0+0io 0pf+0w 0.125u 1.128s 0:36.73 3.3% 0+0k 0+0io 8pf+0w 0.129u 1.099s 0:59.17 2.0% 0+0k 0+0io 28pf+0w 0.130u 0.679s 1:53.12 0.7% 0+0k 0+0io 8pf+0w 0.139u 1.193s 0:52.88 2.4% 0+0k 0+0io 28pf+0w 0.121u 0.621s 1:57.64 0.6% 0+0k 0+0io 8pf+0w 0.127u 1.241s 0:43.46 3.1% 0+0k 0+0io 28pf+0w 0.127u 0.734s 1:19.92 1.0% 0+0k 0+0io 8pf+0w 0.126u 1.317s 0:51.17 2.7% 0+0k 0+0io 28pf+0w 0.137u 0.613s 2:19.44 0.5% 0+0k 0+0io 8pf+0w 0.113u 1.290s 0:42.33 3.3% 0+0k 0+0io 28pf+0w 0.125u 0.538s 2:06.91 0.5% 0+0k 0+0io 7pf+0w 0.128u 1.328s 0:41.59 3.4% 0+0k 0+0io 28pf+0w So trial #3 is an anamoly, since it completed quickly as well. All the rest of the trials completed very slowly, in comparison. Any idea what is going on here? AFAIK, the test program is in steady state and doesn't do any I/O. So its behavior should not be a factor. -- Best Regards, Ray ----------------------------------------------- Ray Bryant 512-453-9679 (work) 512-507-7807 (cell) raybry@sgi.com raybry@austin.rr.com The box said: "Requires Windows 98 or better", so I installed Linux. ----------------------------------------------- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org