在Linux系統上增加堆大小

Question

我在linux機器上工作，我想設置最小堆大小並且還想增加Java的最大堆大小。 RAM爲4GB，當前最大堆大小爲1GB。你能指點我什麼值可以增加最大堆，以及我需要爲上述配置設置最小堆大小。

Answer 1

這應該有助於

-Xms<size>  set initial Java heap size 
-Xmx<size>  set maximum Java heap size 
-Xss<size>  set java thread stack size 

java -Xms4g -Xmx4g ClassName 

Answer 2

Java Heap Size Place to store objects created by your Java application, this is where Garbage Collection takes place, the memory used by your Java application. For a heavy Java process, insufficient Heap size will cause the popular java.lang.OutOfMemoryError: Java heap space.

-Xms<size> - Set initial Java heap size 
-Xmx<size> - Set maximum Java heap size 

$ java -Xms512m -Xmx1024m JavaApp 

Suggested Java Memory Below is suggested value for a small to medium Java application

Heap = -Xms512m -Xmx1024m 

來源：https://www.mkyong.com/java/find-out-your-java-heap-memory-size/