Shulou(Shulou.com)06/02 Report--

Today, I will talk to you about how to use the JVM memory tuning tool, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article.

1. Count the number of gc

Jstat-gc pid

Percentage of space used in Survivor space 0 zone on S0-Heap

Percentage of space used in Survivor space 1 zone on S1-Heap

Percentage of space used in the Eden space area on E-Heap

Percentage of space used in the Old space area on O-Heap

Percentage of space used in P-Perm space area

YGC-the number of times Young GC occurred since the application was started and sampled

Time spent by YGCT- from application startup to sampling Young GC (in seconds)

FGC-the number of times Full GC occurred since the application was started and sampled

Time spent by FGCT- from application startup to sampling Full GC (in seconds)

GCT-Total time spent on garbage collection from application startup to sampling (in seconds)

two。

Jmap-dump:format=b,file=heap.hprof pid

Print hprof file and analyze the information in jvm with the help of MemoryAnalyzer

After reading the above, do you have any further understanding of how to use the JVM memory tuning tool? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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