CPU Method

The CPU Method section defines the way of collecting CPU profiling information. If these settings are changed after the CPU profiling has already begun, the new settings will have effect the next time you start the profiling process.

CPU Method settings are separated in two in accordance with the two methods for CPU usage measurement: timing and sampling. The specifics of the methods are described in the CPU Sampling and CPU Timing guides.

• For the timing method, you can use the Filter methods less than field option. It allows you to filter the profiled Java methods according to their execution time (in milliseconds). For example, if you set the value of this option to 1 millisecond, all methods whose execution takes less than 1 ms will not be displayed. This option is useful for reducing the traffic and memory usage of the mBProfiler GUI, and for reducing the number of displayed methods in the CPU Call Tree and the CPU Hot Spots views.
• For the sampling method, the Sampling interval and Filter not running samples options are available.

  The Sampling interval option configures the rate in milliseconds for taking the samples.

  The Filter not running samples option disables the retrieval of the stack traces of threads that are blocked, waiting or sleeping. However, you will not be able to see where exactly a thread has passed into one of those states. Use this option to improve mBProfiler's performance.

Both methods are influences by the Use real CPU time option, which if checked makes mBProfiler show durations when real execution has taken place instead of the total time while a thread has been alive.