Thread Subject: How does profiling affect performance?

I have a matlab script that will take about a week to run. If I run the script with the profiler, will it slow the performance down significantly? Also, if it does slow it down, is it a constant (for example, 10%) performance degradation over the entire program, or will it progressively get slower during the script because the profiler is keeping track of more information the longer it's running? Does anyone know?

Thanks!

On 20 Nov, 16:05, "Brian " <k...@ee.washington.edu> wrote:
> I have a matlab script that will take about a week to run. If I run the script with the profiler, will it slow the performance down significantly?

Yes.

> Also, if it does slow it down, is it a constant (for example, 10%) performance degradation over the entire program, or will it progressively get slower during the script because the profiler is keeping track of more information the longer it's running? Does anyone know?

If you want to use the profiler to find bottlenecks in the
script, run it with a data set smalle enough to be processed
in a matter of minutes or hours.

Rune