Peak load analysis in java application

Question

Java

Tell me how to investigate what caused the peaks in the use of the processor by a java application, when, for example, the processor usage increases from the usual 3-4% to 30-40% for a short time? VisualVM shows that this is not the start of the garbage collector, there is enough memory for the application. Profiling shows CPU usage on average, i.e. peaks can not be caught as far as I understand. Is there any utility or way to do such an analysis?

Answer 1

Why "average"? For example, in YourKit, you can even select a certain time period in real time and see what tormented the processor during the designated time. In addition, it is always possible to start a snapshot at a convenient time (when the brakes appeared) and end it after the brakes are completed.