From: "John Cesta - Lists" <[EMAIL PROTECTED]>
>
> Since we host over 300 Web sites (NT)and each site generates its own
> logfile, I'd like to get a report that totals the total traffic on the
> server. I can do this by using a program we have that creates an analog
> report for each Web. Curretly I only total the Data transferred. What
> I'd like to see is a total of unique visitors or traffic. I know that a
> total ofunique vistitors is almost an impossibility (an accurate one
> nayway) but which piece of summary information below would I want to
> total to get a close approximation? Would it be Successful requests,
> Distinct files requested?
John, you can't extract this information from 300 seperate reports. If you
look at a very extreme example, it may demonstrate why the approach you
propose doesn't make sense.
If each of your 300 sites had 1 request from 1 visitor each, you'd have a
"collective" report showing 300 unique visitors. But in reality, there
would be no way to tell if there had been 300 unique visitors, or if one
person had visited all 300 sites, or 10 people had visited 30 sites each,
etc.
If you ignore all the limitations of proxy servers and ISPs recycling
dialup IP addresses, the closest thing to a total of unique visitors would
be a report of Unique Hosts across all 300 log files - that is, a single
report run against all 300 logfiles at once, not a sum of the Unique Hosts
extracted from 300 seperate reports.
Given the inaccuracy of the numbers involved, your best bet may be to just
do one or two runs of just the host report aagainst all 300 sites, and get
a multiplier factor that you can apply in future.
Aengus
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