如何从Java程序中获取JVM的最小和最大堆大小设置
问题内容:
如何从Java程序中获取VM的最小和最大堆大小设置?
问题答案:
最大堆大小:
Runtime.getRuntime().maxMemory();
您可能会发现一些有趣的其他计算:
Runtime runtime = Runtime.getRuntime();
long maxMemory = runtime.maxMemory();
long allocatedMemory = runtime.totalMemory();
long freeMemory = runtime.freeMemory();
long totalFreeMemory = freeMemory + (maxMemory - allocatedMemory);
long usedMemory = maxMemory - totalFreeMemory;