What effect does iMacros itself have on web application response measurements?
The overhead of iMacros itself is very thin. On a 3 GHz Pentium each macro step takes only about 20 ms (0.02s) of processing time. If you compare this to the average page response time the delay caused by iMacros itself is typically much less than 2%. Note that a few commands need more processor time, for example the CLEAR, IMAGESEARCH or IMAGECLICK commands. Since the iMacros Browser is an IE-compatible browser realistic viewer experience results are guaranteed. For example, your performance measurement results include the browser rendering time.
