Can you tell me why eValid's regular expression searches takes so long when it is searching a page with a large number of elements?
A fair question CNapier.
You're partially answered it yourself:
If the page has a large number of elements then you would expect a search to take longer.
But if you use a very general regular expression then you create MUCH more work for eValid.
Here is a summary of comparison of times searching common top pages, doing a simple non-regular-expression search versus doing a general regular-expression search: http://www.e-valid.com/Products/Documen ... mance.html
As you can see, on the right-hand-most columns, a regular expression that is NOT found on the page can take quite a long time.
It make be 20-50:1 slower in searching a very large page.
Hope this answers your question.
-- eValid Support