VisualVM and Self Time

Question

I\'ve been searching all over for a consistent and clear explanation of what \'self time\' actually refers to in the VisualVM context and how does it differ to \'self time (

Answer 1

• Self Time is a wall-clock time spent in the method itself (includes time waiting/sleeping).
• Self Time (CPU) is a time processor time, so it does NOT include time spent waiting, sleeping, etc.
  
  
• Both columns do NOT include time spent in methods invoked from that method.
• Both Self Time and Self Time (CPU) in the sampler are approximation of actual data.
• Self Time [%] refers to one of the two selected Self Time [(CPU)] columns.