Java

Heap Size

​https://www.journaldev.com/2856/java-jvm-memory-model-memory-management-in-java

• 系統預設值

  ~$ java -XX:+PrintFlagsFinal -version | grep HeapSize
      uintx ErgoHeapSizeLimit                         = 0                                   {product}
      uintx HeapSizePerGCThread                       = 87241520                            {product}
      uintx InitialHeapSize                          := 197132288                           {product}
      uintx LargePageHeapSizeThreshold                = 134217728                           {product}
      uintx MaxHeapSize                              := 3149922304                          {product}
  java version "1.8.0_74"
  Java(TM) SE Runtime Environment (build 1.8.0_74-b02)
  Java HotSpot(TM) 64-Bit Server VM (build 25.74-b02, mixed mode)