Hi,
there are two points :
- the load generated by the javascript tag. Actually the maximum number of query by hit of the tag is 3. And these query are really soft : only one table is used and WHERE clauses are made on indexed fields.
- the load generated when consulting the statistics. For past days, month and years, an archive with all computed datas is generated only once. This computation can take some minutes if you have a big site. But after that, you are free to analyze your statistics without overloading your server.
Does it answer your question?
Arnaud