[thelist] Logging stats - excluding robots?

xfedex xfedex at gmail.com
Tue Nov 1 08:49:22 CST 2005


Hi,

On 10/31/05, Ian Anderson <ian at zstudio.co.uk> wrote:
> Ian Anderson wrote:
>
> > If a given robot does not support cookies and IIS starts a new session
> > for every GET request, the figure returned for "Sessions" could be
> > vastly inaccurate if, for example, half the visits are by robots and
> > each file requested started a new session.
>
> Follow up - have just turned cookies off in Firefox and tested some of
> the issue, and it looks like:
>
> Answer to my Q 2.
> Yes, IIS fires Session_onStart for every page request made without
> cookies, starting a new session each time an ASP page is requested.
>
> Answer to my Q3.
> It doesn't start a new session when an image is requested, though. So
> the scale of the inaccuracy is driven by the number of ASP pages visited
> by the cookieless User Agent.
>
> e.g. (asssuming robots can't accept cookies)
>
> 10 human visitors - 10 sessions
> 10 robots, 5 pages - 50 sessions
>
> Site stats report 60 visits instead of 10.
>
> Short of munged URLs with home-rolled session tracking, any thoughts?
>
> Cheers
>
> Ian
>

You could try with one of those log analyzers, like this one
http://www.abacre.com/ala/ (free for 30 days)

Saludos!



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