$ java -jar ~/jcstress.jar -t org.openjdk.jcstress.tests.init.fields.volatiles.LongTest -iters 1

Java Concurrency Stress Tests
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Rev: 5297e983aa2bc98d, built by jenkins-slave with 11.0.12 at 2022-02-09T10:09:54Z

Burning up to figure out the exact CPU count....... done!

Probing the target OS:
 (all failures are non-fatal, but may affect testing accuracy)

----- [OK] Trying to set global affinity with taskset
----- [OK] Trying to set per-thread affinity with syscalls

Initializing and probing the target VM:
 (all failures are non-fatal, but may affect testing accuracy)

----- [OK] Unlocking diagnostic VM options
----- [OK] Disabling performance data collection
----- [OK] Checking for C1 availability
----- [OK] Checking for C2 availability
----- [OK] Trimming down the VM heap size to 256M
----- [OK] Trimming down the number of parallel GC threads
----- [OK] Trimming down the number of concurrent GC threads
----- [OK] Trimming down the number of G1 concurrent refinement GC threads
----- [OK] Trimming down the number of compiler threads
----- [OK] Testing @Contended works on all results and infra objects
----- [OK] Unlocking debug information for non-safepoints
----- [OK] Unlocking C2 local code motion randomizer
----- [OK] Unlocking C2 global code motion randomizer
----- [OK] Unlocking C2 iterative global value numbering randomizer
----- [OK] Unlocking C2 conditional constant propagation randomizer
----- [OK] Checking if C2 randomizers accept stress seed
----- [OK] Testing allocation profiling
----- [OK] Testing Thread.onSpinWait
----- [OK] Testing PrintAssembly
----- [OK] Testing compiler directives

Probing what VM configurations are available:
 (failures are non-fatal, but may miss some interesting cases)
 (split compilation is requested and compiler directives are available)

----- [OK] []
----- [OK] [-XX:+StressLCM, -XX:+StressGCM, -XX:+StressIGVN, -XX:+StressCCP]

Detecting CPU topology and computing scheduling classes:
  Linux, using /sys/devices/system/cpu
  1 package, 6 cores per package, 2 threads per core

  CPU lists:
    Package #0, Core #0, Threads: 0, 6
    Package #0, Core #1, Threads: 1, 7
    Package #0, Core #2, Threads: 2, 8
    Package #0, Core #3, Threads: 3, 9
    Package #0, Core #4, Threads: 4, 10
    Package #0, Core #5, Threads: 5, 11

  Scheduling classes for matching tests:
    2 actors:
      (PG 0, CG 0), (PG 0, CG 0)
      (PG 0, CG 0), (PG 0, CG 1)

  Test configuration:
    Test preset mode: "default"
    Hardware CPUs in use: 12
    Spinning style: Thread.onSpinWait()
    Test selection: "org.openjdk.jcstress.tests.init.fields.volatiles.LongTest"
    Forks per test: 1 normal, 5 stress
    Iterations per fork: 1
    Time per iteration: 1000 ms
    Test stride: 40 strides x 256 tests, but taking no more than 128 Mb
    Test result blob: "jcstress-results-2022-07-18-14-37-52.bin.gz"
    Test results: "results/"

  Attached the interactive console.
  Printing the progress line at most every 1000 milliseconds.

..... [TIMEOUT] o.o.j.t.init.fields.volatiles.LongTest
                           
  Scheduling class:
    actor1: package group 0, core group 0
    actor2: package group 0, core group 0

  CPU allocation:
    actor1: CPU #3, package #0, core #3
    actor2: CPU #9, package #0, core #3

  Compilation: split
    actor1: Interpreter
    actor2: C2

  JVM args: []
  Fork: #1

  Messages:
    Timeout waiting for tasks to complete: 30007 ms
    Have stale threads, forcing VM to exit for proper cleanup.

..... [TIMEOUT] o.o.j.t.init.fields.volatiles.LongTest