From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 21 Aug 2002 19:03:15 +0100 (IST) From: Mel Subject: Re: [PATCH] rmap 14 In-Reply-To: <20020820194142.M2645@redhat.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: "Stephen C. Tweedie" Cc: linux-mm@kvack.org List-ID: On Tue, 20 Aug 2002, Stephen C. Tweedie wrote: > You can get that by a bit of stats: keeping track of the sum of each > value you observe plus their squares and cubes gives you the main > stats you probably want to collect: > Good point. My stats analysis is a bit rusty bordering on the non-existant and so a refresher course is on the way. I aim to start providing stats analysis tools within the next few versions. I'm going to focus another while on data collection before I move heavier onto data analysis. I've finished the benchmark for anonymous memory referecing for version of VM Regress 0.6 (released later when I have the docs updated). I've run a series of tests of 2.4.19 Vs 2.4.19-rmap14a . http://www.csn.ul.ie/~mel/vmr/2.4.19/smooth_sin_50000/mapanon.html http://www.csn.ul.ie/~mel/vmr/2.4.19-rmap14a/smooth_sin_50000/mapanon.html are two of them . It is a test of 5,000,000 page references to a memory range 50000 pages long, almost twice the size of physical memory. It tracks, how long it took to reference a page, the page presense versus page frequency usage, a graph of vmstat output and the vmstat output itself. It also shows the parameters of the test, duration of the test, the kernel version and the output of /proc/cpuinfo and /proc/meminfo. the only other graph I can think of relevance is one of page age Vs page presense which would be a lot more useful than page reference count. The most valuable stats analysis I can think of is against the time reference data to filter badly skewed data but as I said stats analysis is a bit away. I'm considering adding oprofile information if it is available. Is there anything obvious I am missing? -- Mel Gorman MSc Student, University of Limerick http://www.csn.ul.ie/~mel -- 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/