java 了解元空间大小
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时间：2020-11-03 04:24:50 来源:igfitidea点击:
Understanding metaspace size
提问by noob
JVM Settings:
JVM 设置：
-Xms8192M
-Xmx8192M
-XX:NewRatio=1
-XX:SurvivorRatio=6
-XX:MetaspaceSize=256M
-XX:MaxMetaspaceSize=512M
Output of jstat is
jstat 的输出是
S0C S1C S0U S1U EC EU OC OU MC MU CCSC CCSU YGC YGCT FGC FGCT GCT
524288.0 524288.0 0.0 231108.3 3145728.0 2926008.3 4194304.0 73553.2 58624.0 56981.2 8960.0 8619.0 5 0.684 1 0.235 0.919
output of gccapacity is
gc容量的输出是
NGCMN NGCMX NGC S0C S1C EC OGCMN OGCMX OGC OC MCMN MCMX MC CCSMN CCSMX CCSC YGC FGC
4194304.0 4194304.0 4194304.0 218624.0 208896.0 3766784.0 4194304.0 4194304.0 4194304.0 4194304.0 0.0 1099776.0 59136.0 0.0 1048576.0 8960.0 26 1
In both the above output size of metaspace is around 56M even though minimum metaspaceSize is defined as 256m
在上述两个元空间的输出大小都在 56M 左右，即使最小 metaspaceSize 被定义为 256m
回答by Jade Tang
you need turn off the UseCompressedClassPointerswhich will create a space in metaspace.
你需要关闭UseCompressedClassPointers这将在元空间中创建一个空间。
