为什么在Scala中出现OutOfMemoryError编译错误? [英] Why am I getting OutOfMemoryError compilation error in Scala?

问题描述

我正在研究一个Lift项目，并尝试使用jvm args与scala:cc和scala编译服务器进行编译:

I am working on a Lift project and trying to compile it with scala:cc and the scala compilation server using the jvm args:

-Xmx1024m  -Xss20m -XX:PermSize=64M -XX:MaxPermSize=512M -XX:+CMSClassUnloadingEnabled -XX:+CMSClassUnloadingEnabled

jvm args也会发生错误:

The error also occurs with the jvm args:

-Xmx1024m  -Xss20m -XX:PermSize=64M -XX:MaxPermSize=512M 

结果是:

[INFO] Compiling 16 source files to /Users/axaluss/IdeaProjects/trunk/Team_Skynet/target/classes at 1299141180948
[ERROR] java.lang.OutOfMemoryError: Java heap space
[INFO]  at scala.tools.nsc.symtab.Types$class.typeRef(Types.scala:2503)
[INFO]  at scala.tools.nsc.symtab.SymbolTable.typeRef(SymbolTable.scala:13)
[INFO]  at scala.tools.nsc.symtab.Types$TypeMap.mapOver(Types.scala:2828)
[INFO]  at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply(Types.scala:3209)
[INFO]  at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply(Types.scala:3085)
[INFO]  at scala.tools.nsc.symtab.Types$TypeMap.mapOver(Types.scala:2849)
[INFO]  at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply(Types.scala:3209)
[INFO]  at scala.tools.nsc.symtab.Types$Type.asSeenFrom(Types.scala:507)
[INFO]  at scala.tools.nsc.symtab.Types$Type.computeMemberType(Types.scala:531)
[INFO]  at scala.tools.nsc.symtab.Symbols$MethodSymbol.typeAsMemberOf(Symbols.scala:1774)
[INFO]  at scala.tools.nsc.symtab.Types$Type.memberType(Types.scala:522)
[INFO]  at scala.tools.nsc.symtab.Types$Type.findMember(Types.scala:858)
[INFO]  at scala.tools.nsc.symtab.Types$Type.nonPrivateMembers(Types.scala:453)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub0$1(Types.scala:4919)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub0$1(Types.scala:4873)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub(Types.scala:4943)
[INFO]  at scala.tools.nsc.symtab.SymbolTable.lub(SymbolTable.scala:13)
[INFO]  at scala.tools.nsc.symtab.Types$class.lubsym$1(Types.scala:4901)
[INFO]  at scala.tools.nsc.symtab.Types$$anonfun$38.apply(Types.scala:4924)
[INFO]  at scala.tools.nsc.symtab.Types$$anonfun$38.apply(Types.scala:4919)
[INFO]  at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:61)
[INFO]  at scala.collection.immutable.List.foreach(List.scala:45)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub0$1(Types.scala:4919)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub(Types.scala:4943)
[INFO]  at scala.tools.nsc.symtab.SymbolTable.lub(SymbolTable.scala:13)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub(Types.scala:4863)
[INFO]  at scala.tools.nsc.symtab.SymbolTable.lub(SymbolTable.scala:13)
[INFO]  at scala.tools.nsc.symtab.Types$class.solveOne$1(Types.scala:4675)
[INFO]  at scala.tools.nsc.symtab.Types$$anonfun$solve$1.apply(Types.scala:4684)
[INFO]  at scala.tools.nsc.symtab.Types$$anonfun$solve$1.apply(Types.scala:4683)
[INFO]  at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:61)
[INFO]  at scala.collection.immutable.List.foreach(List.scala:45)
[ERROR] error: fatal error (server aborted): Java heap space
[ERROR] one error found

我该如何解决这个问题? 我不知道是什么原因导致了此错误，除了增加了内存，还没有在Google上找到任何内容.

How can I solve this problem? I dont know what is causing this error and found anything on Google except increasing the memory.

推荐答案

显然，您必须增加mx. Scala 确实存在的一个问题是其大的内存消耗.随着64位CPU和服务器操作系统的广泛采用，以及当前64位桌面OS的采用激增，我预计它将不再是关键.

Obviously, you have to increase mx. One problem Scala does have is its big memory consumption. With the widespread adoption of 64 bits CPUs and server OS, and the current surge in adoption of 64 bits desktop OS, I expect it won't be critical much longer.

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