./frysk-core/TestRunner -r 1000 'testSingleThreadedDetached(frysk.util.TestFStack)' produces the following: Running testSingleThreadedDetached(frysk.util.TestFStack) ...execvp: Too many open files 25-Jan-07 4:59:09 PM frysk.proc.LinuxPtraceHost$PollWaitOnSigChld$5 terminated WARNING: No task for pid 15,123 FAIL junit.framework.AssertionFailedError: event loop run explictly stopped (startChild (Sig_USR1)) Time: 5.008 There was 1 failure: 1) testSingleThreadedDetached(frysk.util.TestFStack)junit.framework.AssertionFailedError: event loop run explictly stopped (startChild (Sig_USR1)) at frysk.proc.TestLib.assertRunUntilStop(TestRunner) at frysk.proc.TestLib.assertRunUntilStop(TestRunner) at frysk.proc.TestLib$AckHandler.assertAwait(TestRunner) at frysk.proc.TestLib$AckHandler.await(TestRunner) at frysk.proc.TestLib$Child.<init>(TestRunner) at frysk.proc.TestLib$AckProcess.<init>(TestRunner) at frysk.proc.TestLib$AckProcess.<init>(TestRunner) at frysk.proc.TestLib$DetachedAckProcess.<init>(TestRunner) at frysk.util.TestFStack.testSingleThreadedDetached(TestRunner) at frysk.junit.Runner.runCases(TestRunner) at frysk.junit.Runner.runArchCases(TestRunner) at frysk.junit.Runner.runTestCases(TestRunner) at TestRunner.main(TestRunner) FAILURES!!! Tests run: 1, Failures: 1, Errors: 0 Failed after run #203 Note that it always fails after run #203.