lock-benchmark.txt

e2-highcpu-32 VM with 32 vCPUs (Intel Haswell), 32 GB memory, Ubuntu 20.04, OpenJDK 17.0.1

32 threads:
Benchmark                                   (type)  Mode  Cnt       Score       Error  Units
LockBenchmark.testBaseline                     N/A  avgt   10      35.386 ±     0.206  ns/op
LockBenchmark.testLock                  JUC_UNFAIR  avgt   10    1297.444 ±     9.895  ns/op
LockBenchmark.testLock                    JUC_FAIR  avgt   10  283315.363 ± 19745.189  ns/op
LockBenchmark.testLock               CAS_SPIN_LOCK  avgt   10   48758.628 ±   121.294  ns/op
LockBenchmark.testLock       BACKOFF_CAS_SPIN_LOCK  avgt   10    1753.691 ±    20.733  ns/op
LockBenchmark.testLock      BACKOFF_TTAS_SPIN_LOCK  avgt   10    2080.310 ±    39.543  ns/op
LockBenchmark.testLock            TICKET_SPIN_LOCK  avgt   10   20797.627 ±   891.228  ns/op
LockBenchmark.testLock                    MCS_LOCK  avgt   10  278629.063 ± 14552.165  ns/op
LockBenchmark.testLock               MCS_SPIN_LOCK  avgt   10   15587.097 ±   785.566  ns/op

16 threads:
Benchmark                                   (type)  Mode  Cnt       Score      Error  Units
LockBenchmark.testBaseline                     N/A  avgt   10      17.588 ±    0.089  ns/op
LockBenchmark.testLock                  JUC_UNFAIR  avgt   10     633.150 ±    2.602  ns/op
LockBenchmark.testLock                    JUC_FAIR  avgt   10  148643.124 ± 6985.621  ns/op
LockBenchmark.testLock               CAS_SPIN_LOCK  avgt   10   21276.050 ±  482.583  ns/op
LockBenchmark.testLock       BACKOFF_CAS_SPIN_LOCK  avgt   10     732.360 ±   23.180  ns/op
LockBenchmark.testLock      BACKOFF_TTAS_SPIN_LOCK  avgt   10     810.022 ±   42.934  ns/op
LockBenchmark.testLock            TICKET_SPIN_LOCK  avgt   10    7504.140 ±  920.938  ns/op
LockBenchmark.testLock                    MCS_LOCK  avgt   10  150179.629 ± 5628.804  ns/op
LockBenchmark.testLock               MCS_SPIN_LOCK  avgt   10    4446.553 ±   92.338  ns/op

8 threads:
Benchmark                                   (type)  Mode  Cnt      Score      Error  Units
LockBenchmark.testBaseline                     N/A  avgt   10     17.015 ±    0.049  ns/op
LockBenchmark.testLock                  JUC_UNFAIR  avgt   10    316.098 ±    1.147  ns/op
LockBenchmark.testLock                    JUC_FAIR  avgt   10  74660.477 ± 2811.697  ns/op
LockBenchmark.testLock               CAS_SPIN_LOCK  avgt   10   6494.730 ±   51.756  ns/op
LockBenchmark.testLock       BACKOFF_CAS_SPIN_LOCK  avgt   10    336.847 ±   24.356  ns/op
LockBenchmark.testLock      BACKOFF_TTAS_SPIN_LOCK  avgt   10    363.767 ±   26.557  ns/op
LockBenchmark.testLock            TICKET_SPIN_LOCK  avgt   10   2219.451 ±   18.209  ns/op
LockBenchmark.testLock                    MCS_LOCK  avgt   10  72457.352 ± 3144.717  ns/op
LockBenchmark.testLock               MCS_SPIN_LOCK  avgt   10   2085.306 ±   60.382  ns/op

4 threads:
Benchmark                                   (type)  Mode  Cnt      Score      Error  Units
LockBenchmark.testBaseline                     N/A  avgt   10     18.804 ±    0.041  ns/op
LockBenchmark.testLock                  JUC_UNFAIR  avgt   10    155.673 ±    0.556  ns/op
LockBenchmark.testLock                    JUC_FAIR  avgt   10  37238.098 ± 1217.514  ns/op
LockBenchmark.testLock               CAS_SPIN_LOCK  avgt   10   1782.459 ±   15.173  ns/op
LockBenchmark.testLock       BACKOFF_CAS_SPIN_LOCK  avgt   10    160.339 ±   17.037  ns/op
LockBenchmark.testLock      BACKOFF_TTAS_SPIN_LOCK  avgt   10    169.751 ±   24.377  ns/op
LockBenchmark.testLock            TICKET_SPIN_LOCK  avgt   10    982.372 ±    9.618  ns/op
LockBenchmark.testLock                    MCS_LOCK  avgt   10  35858.288 ±  807.150  ns/op
LockBenchmark.testLock               MCS_SPIN_LOCK  avgt   10   1186.545 ±  199.337  ns/op

2 threads:
Benchmark                                   (type)  Mode  Cnt      Score      Error  Units
LockBenchmark.testBaseline                     N/A  avgt   10     18.823 ±    0.034  ns/op
LockBenchmark.testLock                  JUC_UNFAIR  avgt   10    350.819 ±   22.864  ns/op
LockBenchmark.testLock                    JUC_FAIR  avgt   10  11120.871 ± 5246.161  ns/op
LockBenchmark.testLock               CAS_SPIN_LOCK  avgt   10    479.140 ±    7.875  ns/op
LockBenchmark.testLock       BACKOFF_CAS_SPIN_LOCK  avgt   10     75.712 ±   18.551  ns/op
LockBenchmark.testLock      BACKOFF_TTAS_SPIN_LOCK  avgt   10     81.578 ±   22.431  ns/op
LockBenchmark.testLock            TICKET_SPIN_LOCK  avgt   10    386.126 ±    4.539  ns/op
LockBenchmark.testLock                    MCS_LOCK  avgt   10  16433.731 ±  366.203  ns/op
LockBenchmark.testLock               MCS_SPIN_LOCK  avgt   10    584.281 ±    7.824  ns/op

1 thread:
Benchmark                                   (type)  Mode  Cnt   Score   Error  Units
LockBenchmark.testBaseline                     N/A  avgt   10  18.718 ± 0.013  ns/op
LockBenchmark.testLock                  JUC_UNFAIR  avgt   10  37.338 ± 0.021  ns/op
LockBenchmark.testLock                    JUC_FAIR  avgt   10  37.149 ± 0.044  ns/op
LockBenchmark.testLock               CAS_SPIN_LOCK  avgt   10  34.938 ± 0.019  ns/op
LockBenchmark.testLock       BACKOFF_CAS_SPIN_LOCK  avgt   10  34.939 ± 0.030  ns/op
LockBenchmark.testLock      BACKOFF_TTAS_SPIN_LOCK  avgt   10  34.883 ± 0.025  ns/op
LockBenchmark.testLock            TICKET_SPIN_LOCK  avgt   10  35.187 ± 0.028  ns/op
LockBenchmark.testLock                    MCS_LOCK  avgt   10  39.983 ± 0.119  ns/op
LockBenchmark.testLock               MCS_SPIN_LOCK  avgt   10  39.309 ± 0.042  ns/op