Java堆大小：设置太大时出错
我有一个程序，基本上需要大量内存。然而，由于某种原因，当我尝试将最大堆空间设置为 1.5GB 以上时，java 给出了一个错误。也就是说，运行
java -Xmx1582m [my program]
没问题，但是
java -Xmx1583m [my program]
给出了错误
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
我在 Windows 命令行和 Eclipse 中都遇到了相同的错误。
以下是我的系统配置：
Windows 7（64 位）
Intel Core 2 Quad CPU
安装的 RAM：8.00 GB
Java 版本 1.6.0
奇怪的是，即使我运行 64 位操作系统，我也只能设置 1.5GB 内存8 GB 内存。有办法解决这个问题吗？
I have a program that fundamentally requires a lot of memory. However, for some reason java gives me an error when I try to set the max heap space above 1.5GB. That is, running
java -Xmx1582m [my program]
is okay, but
java -Xmx1583m [my program]
gives the error
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
I got the same error in both Windows command line and Eclipse.
Here are my system configurations:
Windows 7 (64-bit)
Intel Core 2 Quad CPU
Installed RAM: 8.00 GB
Java version 1.6.0
It is weird that I can only set 1.5GB memory even though I'm running 64-bit OS with 8 GB RAM. Is there a way to work around this?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
可能的情况是，虽然您的操作系统是 64 位，但 JVM 不是。打开命令行并输入 java -version 将为您提供详细的版本信息，该信息应指示您安装的 JVM 是 32 位还是 64 位版本。
64 位 JVM 应该不会遇到更高的内存限制。
The likely case is that while your operating system is 64-bit, your JVM is not. Opening a command line and typing
java -versionwill give you the verbose version information, which should indicate whether your installed JVM is a 32 or 64-bit build.A 64-bit JVM should have no problem with the higher memory limits.
对于堆空间被使用
For heap space is used