jdk-23-switch

[info] running (fork) org.openjdk.jmh.Main -i 10 -wi 10 -f1
[info] # JMH version: 1.37
[info] # VM version: JDK 23-ea, OpenJDK 64-Bit Server VM, 23-ea+7-481
[info] # VM invoker: /Library/Java/JavaVirtualMachines/jdk-23.jdk/Contents/Home/bin/java
[info] # VM options: <none>
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 10 s each
[info] # Measurement: 10 iterations, 10 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Throughput, ops/time
[info] # Benchmark: p1.Bench.javaIfElse
[info] # Run progress: 0.00% complete, ETA 00:10:00
[info] # Fork: 1 of 1
[info] # Warmup Iteration   1: 35167.289 ops/s
[info] # Warmup Iteration   2: 36063.010 ops/s
[info] # Warmup Iteration   3: 35997.886 ops/s
[info] # Warmup Iteration   4: 35837.038 ops/s
[info] # Warmup Iteration   5: 35564.058 ops/s
[info] # Warmup Iteration   6: 35613.619 ops/s
[info] # Warmup Iteration   7: 35525.485 ops/s
[info] # Warmup Iteration   8: 35681.640 ops/s
[info] # Warmup Iteration   9: 35485.830 ops/s
[info] # Warmup Iteration  10: 35643.082 ops/s
[info] Iteration   1: 35769.730 ops/s
[info] Iteration   2: 35746.893 ops/s
[info] Iteration   3: 34203.675 ops/s
[info] Iteration   4: 35781.592 ops/s
[info] Iteration   5: 35867.521 ops/s
[info] Iteration   6: 35862.025 ops/s
[info] Iteration   7: 35761.548 ops/s
[info] Iteration   8: 35729.348 ops/s
[info] Iteration   9: 35910.344 ops/s
[info] Iteration  10: 35779.533 ops/s
[info] Result "p1.Bench.javaIfElse":
[info]   35641.221 ±(99.9%) 768.869 ops/s [Average]
[info]   (min, avg, max) = (34203.675, 35641.221, 35910.344), stdev = 508.559
[info]   CI (99.9%): [34872.352, 36410.090] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 23-ea, OpenJDK 64-Bit Server VM, 23-ea+7-481
[info] # VM invoker: /Library/Java/JavaVirtualMachines/jdk-23.jdk/Contents/Home/bin/java
[info] # VM options: <none>
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 10 s each
[info] # Measurement: 10 iterations, 10 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Throughput, ops/time
[info] # Benchmark: p1.Bench.javaSwitch
[info] # Run progress: 33.33% complete, ETA 00:06:40
[info] # Fork: 1 of 1
[info] # Warmup Iteration   1: 23569.407 ops/s
[info] # Warmup Iteration   2: 23371.238 ops/s
[info] # Warmup Iteration   3: 24557.304 ops/s
[info] # Warmup Iteration   4: 24592.280 ops/s
[info] # Warmup Iteration   5: 23355.323 ops/s
[info] # Warmup Iteration   6: 24833.621 ops/s
[info] # Warmup Iteration   7: 24896.383 ops/s
[info] # Warmup Iteration   8: 24665.317 ops/s
[info] # Warmup Iteration   9: 24714.091 ops/s
[info] # Warmup Iteration  10: 24644.733 ops/s
[info] Iteration   1: 24716.642 ops/s
[info] Iteration   2: 24373.975 ops/s
[info] Iteration   3: 24376.911 ops/s
[info] Iteration   4: 24386.142 ops/s
[info] Iteration   5: 24053.471 ops/s
[info] Iteration   6: 24374.261 ops/s
[info] Iteration   7: 24399.400 ops/s
[info] Iteration   8: 20804.871 ops/s
[info] Iteration   9: 24349.442 ops/s
[info] Iteration  10: 24243.587 ops/s
[info] Result "p1.Bench.javaSwitch":
[info]   24007.870 ±(99.9%) 1719.115 ops/s [Average]
[info]   (min, avg, max) = (20804.871, 24007.870, 24716.642), stdev = 1137.088
[info]   CI (99.9%): [22288.755, 25726.985] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 23-ea, OpenJDK 64-Bit Server VM, 23-ea+7-481
[info] # VM invoker: /Library/Java/JavaVirtualMachines/jdk-23.jdk/Contents/Home/bin/java
[info] # VM options: <none>
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 10 s each
[info] # Measurement: 10 iterations, 10 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Throughput, ops/time
[info] # Benchmark: p1.Bench.scalaMatch
[info] # Run progress: 66.67% complete, ETA 00:03:20
[info] # Fork: 1 of 1
[info] # Warmup Iteration   1: 34605.633 ops/s
[info] # Warmup Iteration   2: 35362.180 ops/s
[info] # Warmup Iteration   3: 35148.794 ops/s
[info] # Warmup Iteration   4: 35286.121 ops/s
[info] # Warmup Iteration   5: 35355.577 ops/s
[info] # Warmup Iteration   6: 35241.832 ops/s
[info] # Warmup Iteration   7: 35121.121 ops/s
[info] # Warmup Iteration   8: 35287.664 ops/s
[info] # Warmup Iteration   9: 35196.098 ops/s
[info] # Warmup Iteration  10: 35419.518 ops/s
[info] Iteration   1: 35364.334 ops/s
[info] Iteration   2: 35370.067 ops/s
[info] Iteration   3: 35437.097 ops/s
[info] Iteration   4: 35285.201 ops/s
[info] Iteration   5: 35216.119 ops/s
[info] Iteration   6: 35227.016 ops/s
[info] Iteration   7: 35455.284 ops/s
[info] Iteration   8: 35176.834 ops/s
[info] Iteration   9: 35213.402 ops/s
[info] Iteration  10: 35187.760 ops/s
[info] Result "p1.Bench.scalaMatch":
[info]   35293.312 ±(99.9%) 158.851 ops/s [Average]
[info]   (min, avg, max) = (35176.834, 35293.312, 35455.284), stdev = 105.070
[info]   CI (99.9%): [35134.460, 35452.163] (assumes normal distribution)
[info] # Run complete. Total time: 00:10:00
[info] REMEMBER: The numbers below are just data. To gain reusable insights, you need to follow up on
[info] why the numbers are the way they are. Use profilers (see -prof, -lprof), design factorial
[info] experiments, perform baseline and negative tests that provide experimental control, make sure
[info] the benchmarking environment is safe on JVM/OS/HW level, ask for reviews from the domain experts.
[info] Do not assume the numbers tell you what you want them to tell.
[info] NOTE: Current JVM experimentally supports Compiler Blackholes, and they are in use. Please exercise
[info] extra caution when trusting the results, look into the generated code to check the benchmark still
[info] works, and factor in a small probability of new VM bugs. Additionally, while comparisons between
[info] different JVMs are already problematic, the performance difference caused by different Blackhole
[info] modes can be very significant. Please make sure you use the consistent Blackhole mode for comparisons.
[info] Benchmark          Mode  Cnt      Score      Error  Units
[info] Bench.javaIfElse  thrpt   10  35641.221 ±  768.869  ops/s
[info] Bench.javaSwitch  thrpt   10  24007.870 ± 1719.115  ops/s
[info] Bench.scalaMatch  thrpt   10  35293.312 ±  158.851  ops/s