You can specify, in intervals of seconds, how often the Sampling Collector records profile PCs and call stacks. The valid range for the interval is 1 to 100 samples per second.
Decrease the frequency if you want to decrease your data-collection overhead and don't mind having less precisely accurate data.
Increase the frequency if you want more accurate data and don't mind higher data-collection overhead.
To specify an interval for gathering profiles, move the Collect Profile data slider to the number of samples per second you want.