java.lang.OutOfMemoryError:Play框架中的PermGen空间

Question

编辑: - play ~run运行我的项目

如何删除这个问题,我的项目正处于测试阶段.每天5-6小时后它会突然停止并发出以下错误.该怎么做才能消除此错误？
我正在使用playframework 2.2在scala 2.1中开发这个项目

    java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: PermGen space
    at java.util.concurrent.FutureTask.report(FutureTask.java:122)
    at java.util.concurrent.FutureTask.get(FutureTask.java:188)
Caused by: java.lang.OutOfMemoryError: PermGen space
    at sun.misc.Unsafe.defineClass(Native Method)
    at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:63)
    at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:399)
    at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:396)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:395)
    at sun.reflect.MethodAccessorGenerator.generateSerializationConstructor(MethodAccessorGenerator.java:113)
    at sun.reflect.ReflectionFactory.newConstructorForSerialization(ReflectionFactory.java:331)
    at java.io.ObjectStreamClass.getSerializableConstructor(ObjectStreamClass.java:1376)
    at java.io.ObjectStreamClass.access$1500(ObjectStreamClass.java:72)
    at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:493)
    at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:468)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:468)
    at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:365)
    at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:602)
    at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1622)
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
[trace] Stack trace suppressed: run last compile:run for the full output.
[error] (compile:run) java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: PermGen space
[error] Total time: 11065 s, completed 8 Feb, 2014 6:12:52 PM
1. Waiting for source changes... (press enter to interrupt)

java.lang.OutOfMemoryError: PermGen space
[trace] Stack trace suppressed: run last compile:run for the full output.
[error] (compile:run) java.lang.reflect.InvocationTargetException
[error] Total time: 4 s, completed 8 Feb, 2014 6:12:57 PM
2. Waiting for source changes... (press enter to interrupt)

java.lang.OutOfMemoryError: PermGen space
[trace] Stack trace suppressed: run last compile:run for the full output.
[error] (compile:run) java.lang.reflect.InvocationTargetException
[error] Total time: 4 s, completed 8 Feb, 2014 6:13:08 PM
3. Waiting for source changes... (press enter to interrupt)

java.lang.OutOfMemoryError: PermGen space
[trace] Stack trace suppressed: run last compile:run for the full output.
[error] (compile:run) java.lang.reflect.InvocationTargetException
[error] Total time: 6 s, completed 8 Feb, 2014 6:13:54 PM
4. Waiting for source changes... (press enter to interrupt)
[error] Expected letter
[error] Expected symbol
[error] Expected '!'
[error] Expected '+'
[error] Expected '++'
[error] Expected ';'
[error] Expected end of input.
[error] Expected 'show'
[error] Expected '*'
[error] Expected '{'
[error] Expected project ID
[error] Expected configuration
[error] Expected key
[error] 9000
[error] ^
sbt appears to be exiting abnormally.
  The log file for this session is at /tmp/sbt7580663022166474466.log
java.lang.OutOfMemoryError: PermGen space
Error during sbt execution: java.lang.OutOfMemoryError: PermGen space
Exception in thread "Thread-125" java.lang.OutOfMemoryError: PermGen space

Answer 1

我有同样的问题,所以我导出SBT_OPTS如下:

export SBT_OPTS="-XX:+CMSClassUnloadingEnabled -XX:PermSize=512M -XX:MaxPermSize=1024M"

Answer 2

首先在启动 JVM 时增加永久代大小。

分析您的代码并找出 Perm gen 被消耗的原因。

寻找从不释放引用的集合、深度递归任务等。