java - VM Setting to use all my resources

Question

I was asking a question about the performance of a certain method Performance of method after some comments i discovered that the virtual machine can take argument before running. what is the best argument that make VM use all of my computer resources.

i have core i5 with 4 g ram

Answer 1

您可以获得的最接近的是使用该-XX:+AggressiveHeap选项；然后 JVM 将尝试尽可能多地吃掉内存。

请注意，这仅涉及堆；您可能还想调整 permgen 的大小、堆栈大小等。

注 2：这是针对 Oracle JVM 的；我敢打赌 OpenJDK 也有这样的东西；至于其他JVM实现，不知道。