Re: [ERROR] OutOfMemoryError: Increase heap size or lower gwt.jjs.maxThreads

Are you using a lot of code split points? 61GB memory seems pretty high. Someone else once posted a similar question and this person had ~100 split points which significantly impacted compilation. The more split points you have the more complex analysis will be in order to determine if some code is unique to a split point.

As comparision I have an app that produces 10MB JS in total per permutation and compiles fine using 4GB memory. It uses about 12 split points.

viny...@gmail.com schrieb am Dienstag, 24. September 2024 um 17:58:36 UTC+2:

Hi everyone,

We have stucked in a very strange / awkward situation. Our running GWT 2.6.1 application started crashing at the time of compilation since 2 days back.

We are using netbeans IDE (non-maven). we are sharing our app-information as follows:

1. "WAR" SIZE : 591MB

2. Total "*.gwt.rpc" files : 891 files (we have attached some of the *.gwt.rpc files for ref.)

                    

3. "*.cache.html" SIZE : 4.15 MB 

4. Earlier when WAR was compiling it was taking max 50 minutes for full comilation (single permutation) on hardware of (64 GB RAM, 4 Core, Xeon (R) CPU E3-1225 v5 @3.30 GHz,  window-server 2019 standard)  

5. using JVM option -Xmx61440M (gwt-conpilation config attached for ref.)

6. Currently we are getting following error: 

Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.
   Compiling 1 permutation
      Compiling permutation 0...
      [ERROR] OutOfMemoryError: Increase heap size or lower gwt.jjs.maxThreads
java.lang.OutOfMemoryError: Java heap space
at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:133)
at java.io.OutputStreamWriter.write(OutputStreamWriter.java:220)
at java.io.Writer.write(Writer.java:157)
at com.google.gwt.core.ext.soyc.impl.DependencyRecorder.flushOutput(DependencyRecorder.java:136)
at com.google.gwt.core.ext.soyc.impl.DependencyRecorder.endDependencyGraph(DependencyRecorder.java:70)
at com.google.gwt.dev.jjs.impl.codesplitter.CodeSplitter.computeComplementCfaForFragments(CodeSplitter.java:325)
at com.google.gwt.dev.jjs.impl.codesplitter.CodeSplitter.computeExclusivityMapWithFixups(CodeSplitter.java:362)
at com.google.gwt.dev.jjs.impl.codesplitter.CodeSplitter.execImpl(CodeSplitter.java:480)
at com.google.gwt.dev.jjs.impl.codesplitter.CodeSplitter.exec(CodeSplitter.java:115)
at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.compilePermutation(JavaToJavaScriptCompiler.java:423)
at com.google.gwt.dev.jjs.UnifiedAst.compilePermutation(UnifiedAst.java:137)
at com.google.gwt.dev.CompilePerms.compile(CompilePerms.java:195)
at com.google.gwt.dev.ThreadedPermutationWorkerFactory$ThreadedPermutationWorker.compile(ThreadedPermutationWorkerFactory.java:50)
at com.google.gwt.dev.PermutationWorkerFactory$Manager$WorkerThread.run(PermutationWorkerFactory.java:73)
at java.lang.Thread.run(Thread.java:750)
         [ERROR] Out of memory; to increase the amount of memory, use the -Xmx flag at startup (java -Xmx128M ...)
      [ERROR] Unrecoverable exception, shutting down
com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
at com.google.gwt.dev.ThreadedPermutationWorkerFactory$ThreadedPermutationWorker.compile(ThreadedPermutationWorkerFactory.java:56)
at com.google.gwt.dev.PermutationWorkerFactory$Manager$WorkerThread.run(PermutationWorkerFactory.java:73)
at java.lang.Thread.run(Thread.java:750)
      [ERROR] Not all permutation were compiled , completed (0/1)
F:\users\Avinash\forNewPlugin\aarogya\nbproject\build-gwt.xml:333: The following error occurred while executing this line:
F:\users\Avinash\forNewPlugin\aarogya\nbproject\build-gwt.xml:482: Java returned: 1

BUILD FAILED (total time: 39 minutes 36 seconds) 

We request you all to please provide any help / guidance on the same. 

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