Issues running jcstress on multi-core systems

[Johnson, Andy]

Most recent failures, with 24 cores:
Exception in thread "main" java.lang.AssertionError: TEST FAILURES:
org.openjdk.jcstress.tests.interrupt.ThreadSleepTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.TimeUnitSleepTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ObjectWaitTimedTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ObjectWaitInfiniteTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ObjectWaitTimedTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.TimeUnitSleepTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ReentrantLockInterruptiblyTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.TimeUnitSleepTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ObjectWaitTimedTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ReentrantLockInterruptiblyTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ReentrantLockInterruptiblyTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ThreadSleepTest: Observed forbidden state: STALE
org.openjdk.jcstress.tests.interrupt.ThreadSleepTest: Observed forbidden state: STALE

From the stdout log:
[FAILED] o.o.j.t.interrupt.ThreadSleepTest
    (fork: #1, iteration #4, JVM args: [-client])
  Observed state   Occurrences   Expectation  Interpretation                                     
           STALE             1     FORBIDDEN  Thread had failed to respond.                      
      TERMINATED           166    ACCEPTABLE  The thread had sucessfully terminated.             

(ETA:   00:45:35) (Rate: 1.61E+07 samples/sec) (Tests: 174 of 822) (Forks: 198 of 4932) (Iterations: 971 of 24660; 970 passed, 1 failed, 0 soft errs, 0 hard errs)
[FAILED] o.o.j.t.interrupt.ThreadSleepTest
    (fork: #1, iteration #2, JVM args: [-XX:TieredStopAtLevel=1])
  Observed state   Occurrences   Expectation  Interpretation                                     
           STALE             1     FORBIDDEN  Thread had failed to respond.                      
      TERMINATED           100    ACCEPTABLE  The thread had sucessfully terminated.             

(ETA:   00:44:35) (Rate: 1.66E+07 samples/sec) (Tests: 218 of 822) (Forks: 255 of 4932) (Iterations: 1237 of 24660; 1235 passed, 2 failed, 0 soft errs, 0 hard errs)
[FAILED] o.o.j.t.interrupt.ObjectWaitTimedTest
    (fork: #1, iteration #1, JVM args: [-client, -XX:-TieredCompilation])
  Observed state   Occurrences   Expectation  Interpretation                                     
           STALE             1     FORBIDDEN  Thread had failed to respond.                      
      TERMINATED            41    ACCEPTABLE  The thread had sucessfully terminated.             

(ETA:   00:46:59) (Rate: 1.49E+07 samples/sec) (Tests: 270 of 822) (Forks: 330 of 4932) (Iterations: 1620 of 24660; 1617 passed, 3 failed, 0 soft errs, 0 hard errs)
[FAILED] o.o.j.t.interrupt.ObjectWaitInfiniteTest
    (fork: #1, iteration #3, JVM args: [-server])
  Observed state   Occurrences   Expectation  Interpretation                                     
           STALE             1     FORBIDDEN  Thread had failed to respond.                      
      TERMINATED            96    ACCEPTABLE  The thread had sucessfully terminated.             

(ETA:   00:43:59) (Rate: 1.49E+07 samples/sec) (Tests: 418 of 822) (Forks: 552 of 4932) (Iterations: 2712 of 24660; 2707 passed, 4 failed, 1 soft errs, 0 hard errs)
[FAILED] o.o.j.t.interrupt.ThreadSleepTest
    (fork: #1, iteration #1, JVM args: [-client, -XX:-TieredCompilation])
  Observed state   Occurrences   Expectation  Interpretation                                     
           STALE             1     FORBIDDEN  Thread had failed to respond.                      
      TERMINATED            53    ACCEPTABLE  The thread had sucessfully terminated.             

(ETA:   00:39:02) (Rate: 1.51E+07 samples/sec) (Tests: 636 of 822) (Forks: 1064 of 4932) (Iterations: 5275 of 24660; 5268 passed, 5 failed, 2 soft errs, 0 hard errs)
... and more like this.

-----Original Message-----
From: Andrew Haley [mailto:aph at redhat.com] 
Sent: Wednesday, August 10, 2016 3:13 PM
To: Pavel Punegov <pavel.punegov at oracle.com>; Johnson, Andy <johnsona at cboe.com>
Cc: jcstress-dev at openjdk.java.net
Subject: Re: Issues running jcstress on multi-core systems

On 10/08/16 18:42, Pavel Punegov wrote:
> could you please provide a log of failure example or an exception that could have been thrown there? I haven’t seen any issues executing these tests. 

+1.  Let's see which tests failed.

Andrew.