Java – how to interpret the analysis results?

I used NetBeans and visualvm to run the memory profiler and received the results, but there was no clue how to analyze the results. I studied this article, but it did not teach or give clues on how to interpret the results

I also found the explanation result of this article about NetBeans 4, but I am looking for an article with more details or a method to explain the following results to learn

Solution

There is not much information in the telemetry map pasted in your question

What is the message

>Your program has been monitored for about 3 minutes > your heap utilization is slightly less than 200MB (nothing special) > you have about 90 threads (this must be an application server) > you spend less than 5% on average in GC (normal)

I bet the jagged pattern transmitted in the memory display is your program startup - otherwise, why do things seem to smooth out others at the last minute or so Is your application under any load within 3 minutes of your question?

As a starting point, when your program is making some major improvements, I'll look at how much time your program spends in GC (relative time in GC) If it exceeds 5%, you can consider adjusting the heap or further mining to determine where the allocation occurs

Next I will look for a bottleneck Find out where your application is most of the time and see if you can optimize the code in some way