file processing time
Thanks for asking. This is something you should probably expect. Profiling can slow programs down by as little as half and as much as one tenth of their original speed because of the overhead involved in extracting the code from the CLR.
Profiler has a built-in algorithm to compensate for this so it will show you, as close as possible, what the 'real' time would be had it not been for the Profiling overhead.