Java失败并显示“无法为代码缓存保留足够的空间". [英] Java fails with "Could not reserve enough space for code cache"

问题描述

我有以下问题:

$ java -jar program.jar
Error occurred during initialization of VM
Could not reserve enough space for code cache

系统看到的内存量似乎足够:

The amount of memory that is seen by the system seems sufficient:

$  free -m
             total       used       free     shared    buffers     cached
Mem:          5959        640       5318          0          0        390
-/+ buffers/cache:        249       5710
Swap:         4099          0       4099

我尝试将堆设置降低到16mb，但这没有帮助:

I tried lowering heap settings as low as 16mb, but it didn't help:

$ java -Xmx16m -Xms16m -jar program.jar
Error occurred during initialization of VM
Could not reserve enough space for code cache

有什么问题吗?我该如何调试?

What can be wrong? How can I debug this?

忘记包含版本-我使用的是64位Sun Java 7u15.我实际上无法显示版本字符串，因为"java -version"由于相同的错误而失败.

Forgot to include version - I use Sun Java 7u15, 64 bit. I actually can't get it to display a version string, because "java -version" fails with the same error.

此外，由于某种原因，如果我使用OpenJDK 6u27，它会启动-但由于该应用程序期望使用Java 7，因此它不起作用.

Also, for some reason, if I use OpenJDK 6u27, it starts up - but since the app expects java 7, it doesn't work.

推荐答案

似乎我的Java运行在 PaX .要禁用pax内存控制，我使用了以下命令:

Seems that my java was running on Gentoo Hardened Linux, and kernel had PaX enabled. To disable pax memory control, I used the following command:

paxctl -c -m /path/to/your/java/bin/java

那之后，一切都变得顺利了.

After that, everything was smooth.

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