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This article mainly shows you "what is the high CPU occupied in JVM?", the content is simple and clear, and I hope it can help you solve your doubts. Let the editor lead you to study and learn this article "what is the high CPU occupied in JVM?"

In the development process, sometimes we find that JVM occupies a high amount of CPU, which is not in line with our expectations. What is CPU doing at this time? What thread keeps CPU so busy? We can see what thread CPU is executing by following a few steps.

1. Find jvm process ID: jps-lv or ps aux | grep java

two。 According to pid, find the thread with higher cpu usage: ps-mp pid-o THREAD,tid,time as shown in the figure: find the tid with the highest cpu usage (you can use the sort command to sort: sort-k 3-r-n)

3. Convert tid to a hexadecimal number: printf "% x\ n" tid

4. Use the jstack command to query thread information to locate the specific thread and code: jstack pid | grep 7ccd-A 30

In this way, you can see that the CPU is so high, what thread is making trouble!

How, do not feel a little troublesome, it does not matter, I wrote these steps into a script, directly use the OK.

The above is all the content of this article entitled "what is the high CPU occupied in JVM?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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