| 1 | = Java = |
| 2 | |
| 3 | == HeapSize == |
| 4 | |
| 5 | https://www.journaldev.com/2856/java-jvm-memory-model-memory-management-in-java |
| 6 | |
| 7 | [[Image(https://cdn.journaldev.com/wp-content/uploads/2014/05/Java-Memory-Model-1024x425.png)]] |
| 8 | |
| 9 | * 系統預設值 |
| 10 | {{{ |
| 11 | ~$ java -XX:+PrintFlagsFinal -version | grep HeapSize |
| 12 | uintx ErgoHeapSizeLimit = 0 {product} |
| 13 | uintx HeapSizePerGCThread = 87241520 {product} |
| 14 | uintx InitialHeapSize := 197132288 {product} |
| 15 | uintx LargePageHeapSizeThreshold = 134217728 {product} |
| 16 | uintx MaxHeapSize := 3149922304 {product} |
| 17 | java version "1.8.0_74" |
| 18 | Java(TM) SE Runtime Environment (build 1.8.0_74-b02) |
| 19 | Java HotSpot(TM) 64-Bit Server VM (build 25.74-b02, mixed mode) |
| 20 | }}} |
| 21 | |