限制全局播放框架的 Java 堆空间 [英] Limit Java Heap Space for play framework globaly

问题描述

我有一个非常旧的 linux 系统并安装了 java 和 play 框架.当我运行 java 我得到:

I have a very old linux system and installed java and play framework. When I run java I get:

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

所以我在 application.conf 中限制了 java 堆空间:

So I limited the java heap space in application.conf:

jvm.memory=-Xmx256M -Xms256M

通过该设置，我可以运行游戏测试、游戏运行等......

With that setting I can run play test, play run etc....

但我不能跑:

play dependencies 
~        _            _ 
~  _ __ | | __ _ _  _| |
~ | '_ | |/ _' | || |_|
~ |  __/|_|\____|\__ (_)
~ |_|            |__/   
~
~ play! 1.2.1, http://www.playframework.org
~
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

是否有全局配置文件或环境变量可以限制播放框架的全局 java 堆空间?

Is there a global configuration file or environment variable where I can limit java heap space globaly for play framework?

更新:以下也不起作用:

play dependencies -Xmx256M -Xms256M
~        _            _ 
~  _ __ | | __ _ _  _| |
~ | '_ | |/ _' | || |_|
~ |  __/|_|\____|\__ (_)
~ |_|            |__/   
~
~ play! 1.2.1, http://www.playframework.org
~
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

更新 2:

内存:

ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
pending signals                 (-i) 1024
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 38912
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

限制:

cat /proc/meminfo 
MemTotal:      4139312 kB
MemFree:        332988 kB
Buffers:        105252 kB
Cached:        1705644 kB
SwapCached:          4 kB
Active:        2566216 kB
Inactive:       625032 kB
HighTotal:      786432 kB
HighFree:         1728 kB
LowTotal:      3352880 kB
LowFree:        331260 kB
SwapTotal:     4192956 kB
SwapFree:      4168224 kB
Dirty:             368 kB
Writeback:           0 kB
Mapped:        1672180 kB
Slab:           570864 kB
CommitLimit:   6262612 kB
Committed_AS:  4075144 kB
PageTables:      19884 kB
VmallocTotal:   303096 kB
VmallocUsed:     10400 kB
VmallocChunk:   292648 kB

BR,

雷内

推荐答案

在谷歌搜索后我发现了 这个 讨论.问题是，我的 Linux 系统正在 openvz 容器中运行:

After googling more around I found this discussion. The problem is, that my Linux System is running in an openvz container:

Java 报错的原因是因为在启动时，它看到机器有超过 2 GB 的 RAM，所以它以服务器模式启动，它试图分配所有内存，然后失败，因为它在 VPS 内.

我可以通过更改/usr/java/jdk1.6.0_26/jre/lib/i386/jvm.cfg 来解决 java 启动问题:

I could fix the java startup problem by changing /usr/java/jdk1.6.0_26/jre/lib/i386/jvm.cfg from:

-client IF_SERVER_CLASS -server
-server KNOWN
-hotspot ALIASED_TO -client
-classic WARN
-native ERROR
-green ERROR

到:

#-client IF_SERVER_CLASS -server
-client KNOWN
-server KNOWN
-hotspot ALIASED_TO -client
-classic WARN
-native ERROR
-green ERROR

现在我可以运行任何播放命令了.也许这有助于其他人遇到与基于容器的虚拟化相关的类似问题.

Now I can run any play command. Maybe this helps other people having similar problems related to container based virtualization.

BR，雷内

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