What does a 0 (zero) in the time-taken field of an IIS 6 log really mean? I'm trying to get the average time-taken before and after a particular change to see if it had a positive affect, but I'm not sure how to interpret the zeros. Including/excluding them from the average gives me radically different results.
Specifically, if the application actually performed a database hit during a request, it seems virtually impossible for the time-taken to be zero. Is it reasonable to assume that a database call did not occur in that case?
Here's an example from my log file: