SBT内存不足 [英] SBT runs out of memory

问题描述

我正在使用SBT 0.12.3来测试一些代码，并且经常在使用~test命令进行交互式测试时得到此错误消息.

I am using SBT 0.12.3 to test some code and often I get this error message while testing interactively with the ~test command.

8. Waiting for source changes... (press enter to interrupt)
[info] Compiling 1 Scala source to C:\Users\t\scala-projects\scala test\target\s
cala-2.10\classes...
sbt appears to be exiting abnormally.
  The log file for this session is at C:\Users\t\AppData\Local\Temp\sbt566325905
3150896045.log
java.lang.OutOfMemoryError: PermGen space
        at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
        at java.util.concurrent.FutureTask.get(Unknown Source)
        at sbt.ConcurrentRestrictions$$anon$4.take(ConcurrentRestrictions.scala:
196)
        at sbt.Execute.next$1(Execute.scala:85)
        at sbt.Execute.processAll(Execute.scala:88)
        at sbt.Execute.runKeep(Execute.scala:68)
        at sbt.EvaluateTask$.run$1(EvaluateTask.scala:162)
        at sbt.EvaluateTask$.runTask(EvaluateTask.scala:177)
        at sbt.Aggregation$$anonfun$4.apply(Aggregation.scala:46)
        at sbt.Aggregation$$anonfun$4.apply(Aggregation.scala:44)
        at sbt.EvaluateTask$.withStreams(EvaluateTask.scala:137)
        at sbt.Aggregation$.runTasksWithResult(Aggregation.scala:44)
        at sbt.Aggregation$.runTasks(Aggregation.scala:59)
        at sbt.Aggregation$$anonfun$applyTasks$1.apply(Aggregation.scala:31)
        at sbt.Aggregation$$anonfun$applyTasks$1.apply(Aggregation.scala:30)
        at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.sca
la:62)
        at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.sca
la:62)
        at sbt.Command$.process(Command.scala:90)
        at sbt.MainLoop$$anonfun$next$1$$anonfun$apply$1.apply(MainLoop.scala:71
)
        at sbt.MainLoop$$anonfun$next$1$$anonfun$apply$1.apply(MainLoop.scala:71
)
        at sbt.State$$anon$2.process(State.scala:170)
        at sbt.MainLoop$$anonfun$next$1.apply(MainLoop.scala:71)
        at sbt.MainLoop$$anonfun$next$1.apply(MainLoop.scala:71)
        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
        at sbt.MainLoop$.next(MainLoop.scala:71)
        at sbt.MainLoop$.run(MainLoop.scala:64)
        at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:53)
        at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:50)
        at sbt.Using.apply(Using.scala:25)
        at sbt.MainLoop$.runWithNewLog(MainLoop.scala:50)
        at sbt.MainLoop$.runAndClearLast(MainLoop.scala:33)
        at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:17)
Error during sbt execution: java.lang.OutOfMemoryError: PermGen space

错误很明显，我云增加了堆大小，并且可能会停止抛出该错误，但问题是，在进行了几次(最小数量的)测试交互后，它关闭了(我不知道有多少次)代码，如果只是简单地增加堆大小就可以解决问题，还是我必须做其他工作以免耗尽内存.

The error is clear, I cloud increase the heap size and it may stop throwing that error, but the thing is that it shuts down after a number(I don't know how many) of test interactions with a minimal change in the code, and if a simple increase in the heap would solve the problem or do I have to do additional work not to run out of memory.

谢谢.

推荐答案

如果没有，请尝试在sbt.bat中提供更多的PermGen空间.我没有在Windows上运行sbt，但是我给出了java -Xmx1512M -XX:MaxPermSize=512M.可以尝试的另一件事是在测试期间进行分叉: http: //www.scala-sbt.org/release/docs/Detailed-Topics/Testing#forking-tests

If you haven't, try giving more PermGen space in your sbt.bat. I don't run sbt on Windows, but I give java -Xmx1512M -XX:MaxPermSize=512M. Another thing to try may be to fork during testing: http://www.scala-sbt.org/release/docs/Detailed-Topics/Testing#forking-tests

在版本0.12.0中，添加了在单独的JVM中运行测试的功能.设置

In version 0.12.0, the facility to run tests in a separate JVM was added. The setting

fork in Test := true

指定所有测试将在单个外部JVM中执行.

specifies that all tests will be executed in a single external JVM.

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