无法为对象堆保留足够的空间来启动 JVM

2022-01-16 00:00:00 memory jvm linux java

刚刚遇到奇怪的问题.当我输入时

Just faced with strange issue. When i type

java -version

我明白了

Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine.

.

java -Xms64m -Xmx64m -version

这个命令很好用

java version "1.6.0_24" Java(TM) SE Runtime Environment (build 1.6.0_24-b07) Java HotSpot(TM) Client VM (build 19.1-b02, mixed mode)

如果我将 xms、xmx 更改为 128m，我会再次出错.

If i change xms, xmx to 128m, i get error again.

使用 top 命令和 free -m 我可以看到，我获得了超过 192 mb 的空闲空间，那么为什么我仍然会收到此错误?

Using top command and free -m i can see, that i got over 192 mb free, so why i still get this error ?

Mem: 262144k total, 64760k used, 197384k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached

谢谢

推荐答案

您尝试运行它的机器似乎只有 256 MB 内存.

It looks like the machine you're trying to run this on has only 256 MB memory.

也许 JVM 尝试分配一个大的、连续的 64 MB 内存块.您可用的 192 MB 可能会被分割成更小的部分，因此没有 64 MB 的连续块可供分配.

Maybe the JVM tries to allocate a large, contiguous block of 64 MB memory. The 192 MB that you have free might be fragmented into smaller pieces, so that there is no contiguous block of 64 MB free to allocate.

尝试使用较小的堆大小启动 Java 程序，例如:

Try starting your Java program with a smaller heap size, for example:

java -Xms16m ...

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