Messages in this thread | | | From | "Paolo Ciarrocchi" <> | Date | Fri, 27 Dec 2002 21:13:13 +0800 | Subject | Re: [BENCHMARK] vm swappiness with contest |
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From: Con Kolivas <conman@kolivas.net> [...] > Paolo if I was to choose a number from these values I'd suggest lower than 60 > rather than higher, BUT that is because the io load effects become a real > problem when the kernel is swappy - don't _really_ know what this means for > the rest of the time. Maybe in the 40-50 range. There seems to be a knee > (bend) in the curve (most noticable in dbench_load) rather than the curves > being linear. That knee I believe simply shows the way the algorithm for > swappiness basically works. I might throw a 50 at the machine as well to see > what that does.
Con, thank you for your time and results. I have to confirm you that large file writes with a swappy kernel seems to waste time swapping data, I see it with the resp tool too.
May be we can say that a good value for a desktop enviroment is in the 40-50 range while for a server is 70-80, this because with the osdb bench tool I get the best results with 80.
Ciao, Paolo -- ______________________________________________ http://www.linuxmail.org/ Now with POP3/IMAP access for only US$19.95/yr
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