Re: object life cycles

From: Alex Rousskov (rousskov@measurement-factory.com)
Date: Fri Apr 19 2002 - 11:30:06 MDT


On Fri, 19 Apr 2002, mukesh agrawal wrote:

> Do you have any suggestions for parameters values (e.g. what
> fraction of the requests should go to the hot servers)?

Based on recent IRCache statistics,

        the top server receives 3.5% of all requests
        the top 3 servers receive 7.8% of all requests
        the top 10 servers receive 12.3% of all requests
        the top 20 servers receive 15.8% of all requests
        the top 50 servers receive 21.1% of all requests

        http://www.ircache.net/
        http://www.ircache.net/Statistics/Top-Fifty-Servers/

I am sure there are better sources / studies to get this kind of
information from. The above is just one datapoint. However, it already
looks like, ideally, we need a distribution of server popularity
rather than a simple hot/warm division (which makes load balancing
among simulation hosts even more difficult).

Alex.



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