Question

我拥有Play 2.2.X应用程序。

我使用Specs2运行了一套规格，最终导致关于permgen空间的内存不足。

然后我将此设置放在我的Build.scala：

中

sbt.Keys.fork in Test := false

现在它就像一个魅力。

根据一些文档，Play 2.X forks默认测试以防止内存泄漏，但我确实观察到了相反的情况。

在分叉测试时观察permgen问题的原因是什么？我只是不明白。

更新-------------- 使用此配置：

parallelExecution in Test := false,
javaOptions in (Test,run) ++= Seq("-Xms512M", "-Xmx2048M", "-XX:MaxPermSize=2048M", "-XX:+CMSClassUnloadingEnabled")

这是我在启用分叉时获得的错误：

Uncaught exception when running htmlreporting.AllSpecs: java.lang.OutOfMemoryError: PermGen space
sbt.ForkMain$ForkError: PermGen space
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at scala.collection.parallel.immutable.LazyParVectorCombiner.result(ParVector.scala:129)
    at scala.collection.parallel.immutable.LazyParVectorCombiner.result(ParVector.scala:105)
    at scala.collection.Parallelizable$class.par(Parallelizable.scala:42)
    at scala.collection.AbstractTraversable.par(Traversable.scala:105)
    at org.specs2.reporter.AllExporting$$anonfun$export$1$$anonfun$2.apply(AllExporting.scala:28)
    at org.specs2.reporter.AllExporting$$anonfun$export$1$$anonfun$2.apply(AllExporting.scala:27)
    at scalaz.syntax.IdOps$class.$bar$greater(IdOps.scala:15)
    at scalaz.syntax.ToIdOps$$anon$1.$bar$greater(IdOps.scala:82)
    at org.specs2.reporter.AllExporting$$anonfun$export$1.apply(AllExporting.scala:32)
    at org.specs2.reporter.AllExporting$$anonfun$export$1.apply(AllExporting.scala:24)
    at scalaz.syntax.IdOps$class.$bar$greater(IdOps.scala:15)
    at scalaz.syntax.ToIdOps$$anon$1.$bar$greater(IdOps.scala:82)
    at org.specs2.reporter.AllExporting$class.report(AllExporting.scala:17)
    at org.specs2.reporter.SbtConsoleReporter.report(SbtReporter.scala:20)
    at org.specs2.runner.SbtRunner.org$specs2$runner$SbtRunner$$specificationRun(SbtRunner.scala:75)
    at org.specs2.runner.SbtRunner$$anonfun$newTask$1$$anon$5.execute(SbtRunner.scala:59)
    at sbt.ForkMain$Run.runTest(ForkMain.java:239)
    at sbt.ForkMain$Run.runTestSafe(ForkMain.java:211)
    at sbt.ForkMain$Run.runTests(ForkMain.java:187)
    at sbt.ForkMain$Run.run(ForkMain.java:251)

当我的conf变为：

时效果很好

    parallelExecution in Test := false,
    sbt.Keys.fork in Test := false,  //here's the important setting
    javaOptions in (Test,run) ++= Seq("-Xms512M", "-Xmx2048M", "-XX:MaxPermSize=2048M", "-XX:+CMSClassUnloadingEnabled")

Answer 1

哇我严格不理解:)：

我替换了这个设置：

javaOptions in (Test,run) ++= Seq("-Xms512M", "-Xmx2048M", "-XX:MaxPermSize=2048M", "-XX:+CMSClassUnloadingEnabled"),

由此：

javaOptions ++= Seq("-Xms512M", "-Xmx2048M", "-XX:MaxPermSize=2048M", "-XX:+CMSClassUnloadingEnabled"),  //without (Test,run) and it works

它现在有效！

为什么？...是否有另一个特定的群组而不是Test和Run？

测试中的sbt.Keys.fork：= true =＆gt;内存空间不足

1 个答案: