[GitHub] [incubator-skywalking] hepyu commented on issue #1666: Huge memory is used when using skywalking-agent.

[GitHub]

Yeah, the gperftools result seems validate my first dimension point.

jvm version:
![image](https://user-images.githubusercontent.com/3917749/45754214-9c903400-bc4d-11e8-843d-887ecfa2a03a.png)

the result of gperftools with skywalking-agent-6.0.0-alpha:
![image](https://user-images.githubusercontent.com/3917749/45754350-0c062380-bc4e-11e8-8b87-b83f4d2f96c4.png)

the result of gperftools with skywalking-agent-3.2.6:
![image](https://user-images.githubusercontent.com/3917749/45754568-8f277980-bc4e-11e8-9b4c-bab86c9edd88.png)

It seems the key is Java_java_util_zip_Inflater_init.

The premise of two test is the same:
export LD_PRELOAD=/app/3rd/gperftools/lib/libtcmalloc.so
export HEAP_PROFILE_TIME_INTERVAL=10

And print heap per 10 seconds, and fetch eleventh heap as above.

[ Full content available at: 
https://github.com/apache/incubator-skywalking/issues/1666 ]
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