How to check your JAVA JVM memory setting??
You can using this command as below
java -XX:+PrintFlagsFinal -version | grep -iE 'HeapSize|PermSize|ThreadStackSize'
The result print on screen
uintx AdaptivePermSizeWeight = 20 {product}
intx CompilerThreadStackSize = 0 {pd product}
uintx ErgoHeapSizeLimit = 0 {product}
uintx HeapSizePerGCThread = 87241520 {product}
uintx InitialHeapSize := 16285760 {product}
uintx LargePageHeapSizeThreshold = 134217728 {product}
uintx MaxHeapSize := 522190848 {product}
uintx MaxPermSize = 174063616 {pd product}
uintx PermSize = 21757952 {pd product}
intx ThreadStackSize = 1024 {pd product}
intx VMThreadStackSize = 1024 {pd product}
java version "1.7.0_111"
OpenJDK Runtime Environment (rhel-2.6.7.2.el7_2-x86_64 u111-b01)
OpenJDK 64-Bit Server VM (build 24.111-b01, mixed mode)
You can see InitialHeapSize,PermSize,MaxHeapSize,MaxPermSize,ThreadStackSize all these values
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