The Process Overview diagram visualizes application activity and meaningful events related to the profiled application. Use the diagram to determine and select time intervals that are interesting for analysis. For example, the intervals with high CPU load, long blocking GC intervals, and so on.
What the Diagram Shows
The percentage of CPU utilization in a profiled application. The y-axis represents the number of logical CPU cores in the system.
Blocking Garbage Collection
Time intervals where blocking garbage collection (GC) takes place. To perform a blocking GC, CLR suspends all managed threads. For more thorough GC analysis, you can use the Blocking GC filter.
Time intervals where the user interface is not responding. More specifically, these are time intervals where window messages are not pumped for more than 200 ms or processing of a particular message takes more than 200 ms.
Click on a particular UI freeze to select the freeze time interval and the corresponding UI thread. For more thorough freeze analysis, you can use the Interval Filters | UI Freeze filter.
Selecting Time Range
To select a time range:
- Drag the mouse over the desired range holding the left mouse button.
After you select a range, the Selected Time Range filter will be applied. All other filters will show data only for this time range.
Use this to analyze time intervals meaningful for analysis. For example, to determine methods that were executed when the CPU load was on maximum.
You can also use the diagram to quickly select UI freeze time intervals.
To select a UI freeze time interval:
- Click on the desired UI freeze interval.
After you select a UI freeze interval, the filters by its time range and the UI thread will be applied. All other filters will show data only for the UI thread and selected time range.
To zoom in/out the diagram:
Do one of the following:
- Use the mouse scroll wheel.
- Press Ctrl + Drag the mouse holding the left mouse button.
After you zoom the diagram, the Visible Time Range filter will be applied. All other filters will show data only for the currently visible range.
To pan the diagram:
- Drag the mouse holding the right mouse button.