"The total number of concurrent users" doesn't define much. If you mean "the number of users ever", then say that. If you mean "the number of users that had at least one other user logged in at the same time", that might make sense. For example, if one user logs in at 5, and leaves at 8, and another user logs in at 6, and leaves at 9, and a third user logs in from 10 to 11, how many is that? Two, or Three, or none? :)

Or maybe you mean average users over time, which from 5 to 11 pm on that example is (calculating... 3 + 3 + 1 over 6) 2.333 or so.

-- Randal L. Schwartz, Perl hacker

In reply to Re^3: How to Iterate to Identify Concurrent Users by merlyn
in thread How to Iterate to Identify Concurrent Users by Anonymous Monk

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