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chapter3-append.report.txt
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[info] welcome to sbt 1.10.1 (Eclipse Adoptium Java 21.0.4)
[info] loading settings for project global-plugins from metals.sbt,plugins.sbt ...
[info] loading global plugins from /home/gaelrenoux/.sbt/1.0/plugins
[info] loading settings for project public-scalaio2024-benchmarks-build from plugins.sbt ...
[info] loading project definition from /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/project
[success] Generated .bloop/public-scalaio2024-benchmarks-build.json
[success] Total time: 0 s, completed Nov 7, 2024, 6:43:36 PM
[info] loading settings for project public-scalaio2024-benchmarks from build.sbt ...
[info] set current project to scalaio2024-benchmarks (in build file:/home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/)
[info] running (fork) org.openjdk.jmh.generators.bytecode.JmhBytecodeGenerator /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/classes /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/src_managed/jmh /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/resource_managed/jmh default
[info] compiling 1 Scala source to /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/test-classes ...
[info] Processing 261 classes from /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/classes with "reflection" generator
[info] Writing out Java source to /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/src_managed/jmh and resources to /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/resource_managed/jmh
[info] compiling 1116 Java sources to /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/classes ...
[info] done compiling
[info] done compiling
[info] running (fork) org.openjdk.jmh.Main -i 20 -wi 10 -f1 -t1 .*chapter3.AppendBenchmark_String_Large
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_javaLinkedList
[info] # Run progress: 0.00% complete, ETA 00:03:00
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1145361.061 us/op
[info] # Warmup Iteration 2: 25065.370 us/op
[info] # Warmup Iteration 3: 33587.752 us/op
[info] # Warmup Iteration 4: 29498.594 us/op
[info] # Warmup Iteration 5: 51118.726 us/op
[info] # Warmup Iteration 6: 28485.942 us/op
[info] # Warmup Iteration 7: 12444.769 us/op
[info] # Warmup Iteration 8: 18705.390 us/op
[info] # Warmup Iteration 9: 19491.282 us/op
[info] # Warmup Iteration 10: 13789.062 us/op
[info] Iteration 1: 13587.634 us/op
[info] Iteration 2: 15204.378 us/op
[info] Iteration 3: 16410.836 us/op
[info] Iteration 4: 14716.379 us/op
[info] Iteration 5: 11684.299 us/op
[info] Iteration 6: 14848.274 us/op
[info] Iteration 7: 13211.393 us/op
[info] Iteration 8: 13328.680 us/op
[info] Iteration 9: 13531.838 us/op
[info] Iteration 10: 13616.302 us/op
[info] Iteration 11: 14119.945 us/op
[info] Iteration 12: 12352.670 us/op
[info] Iteration 13: 13584.420 us/op
[info] Iteration 14: 13326.310 us/op
[info] Iteration 15: 12783.647 us/op
[info] Iteration 16: 13498.481 us/op
[info] Iteration 17: 13850.789 us/op
[info] Iteration 18: 14035.359 us/op
[info] Iteration 19: 13153.297 us/op
[info] Iteration 20: 12792.088 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_javaLinkedList":
[info] 13681.851 ±(99.9%) 906.977 us/op [Average]
[info] (min, avg, max) = (11684.299, 13681.851, 16410.836), stdev = 1044.476
[info] CI (99.9%): [12774.874, 14588.828] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_list
[info] # Run progress: 16.67% complete, ETA 00:02:42
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1200785.509 us/op
[info] # Warmup Iteration 2: 32162.681 us/op
[info] # Warmup Iteration 3: 32711.368 us/op
[info] # Warmup Iteration 4: 21474.087 us/op
[info] # Warmup Iteration 5: 18909.644 us/op
[info] # Warmup Iteration 6: 22067.738 us/op
[info] # Warmup Iteration 7: 18352.580 us/op
[info] # Warmup Iteration 8: 18287.427 us/op
[info] # Warmup Iteration 9: 18029.828 us/op
[info] # Warmup Iteration 10: 16041.697 us/op
[info] Iteration 1: 16918.501 us/op
[info] Iteration 2: 18205.432 us/op
[info] Iteration 3: 15980.033 us/op
[info] Iteration 4: 19260.770 us/op
[info] Iteration 5: 17968.204 us/op
[info] Iteration 6: 15294.639 us/op
[info] Iteration 7: 17441.638 us/op
[info] Iteration 8: 17432.201 us/op
[info] Iteration 9: 18392.385 us/op
[info] Iteration 10: 15723.864 us/op
[info] Iteration 11: 17883.323 us/op
[info] Iteration 12: 17041.564 us/op
[info] Iteration 13: 17864.640 us/op
[info] Iteration 14: 16077.338 us/op
[info] Iteration 15: 16585.224 us/op
[info] Iteration 16: 15520.629 us/op
[info] Iteration 17: 17704.203 us/op
[info] Iteration 18: 17880.463 us/op
[info] Iteration 19: 18154.014 us/op
[info] Iteration 20: 17572.272 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_list":
[info] 17245.067 ±(99.9%) 931.774 us/op [Average]
[info] (min, avg, max) = (15294.639, 17245.067, 19260.770), stdev = 1073.033
[info] CI (99.9%): [16313.293, 18176.841] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_listBuffer
[info] # Run progress: 33.33% complete, ETA 00:02:08
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1041555.851 us/op
[info] # Warmup Iteration 2: 16276.042 us/op
[info] # Warmup Iteration 3: 15393.915 us/op
[info] # Warmup Iteration 4: 11262.631 us/op
[info] # Warmup Iteration 5: 11713.892 us/op
[info] # Warmup Iteration 6: 10056.527 us/op
[info] # Warmup Iteration 7: 10144.336 us/op
[info] # Warmup Iteration 8: 9270.772 us/op
[info] # Warmup Iteration 9: 9174.348 us/op
[info] # Warmup Iteration 10: 10843.676 us/op
[info] Iteration 1: 12359.051 us/op
[info] Iteration 2: 9626.958 us/op
[info] Iteration 3: 9467.800 us/op
[info] Iteration 4: 9439.835 us/op
[info] Iteration 5: 9532.216 us/op
[info] Iteration 6: 8985.039 us/op
[info] Iteration 7: 9848.178 us/op
[info] Iteration 8: 9274.105 us/op
[info] Iteration 9: 9530.632 us/op
[info] Iteration 10: 9041.222 us/op
[info] Iteration 11: 9238.405 us/op
[info] Iteration 12: 9402.144 us/op
[info] Iteration 13: 9208.359 us/op
[info] Iteration 14: 9618.804 us/op
[info] Iteration 15: 9385.849 us/op
[info] Iteration 16: 9797.201 us/op
[info] Iteration 17: 9360.538 us/op
[info] Iteration 18: 8940.679 us/op
[info] Iteration 19: 9355.817 us/op
[info] Iteration 20: 9843.815 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_listBuffer":
[info] 9562.832 ±(99.9%) 614.528 us/op [Average]
[info] (min, avg, max) = (8940.679, 9562.832, 12359.051), stdev = 707.691
[info] CI (99.9%): [8948.304, 10177.360] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_javaLinkedList
[info] # Run progress: 50.00% complete, ETA 00:01:35
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 342434.349 us/op
[info] # Warmup Iteration 2: 22783.924 us/op
[info] # Warmup Iteration 3: 29717.249 us/op
[info] # Warmup Iteration 4: 23766.659 us/op
[info] # Warmup Iteration 5: 21804.026 us/op
[info] # Warmup Iteration 6: 16236.939 us/op
[info] # Warmup Iteration 7: 16978.942 us/op
[info] # Warmup Iteration 8: 15501.651 us/op
[info] # Warmup Iteration 9: 14392.646 us/op
[info] # Warmup Iteration 10: 15427.841 us/op
[info] Iteration 1: 17877.634 us/op
[info] Iteration 2: 13633.501 us/op
[info] Iteration 3: 14580.877 us/op
[info] Iteration 4: 13253.930 us/op
[info] Iteration 5: 14958.656 us/op
[info] Iteration 6: 14015.697 us/op
[info] Iteration 7: 13062.805 us/op
[info] Iteration 8: 16148.754 us/op
[info] Iteration 9: 15555.216 us/op
[info] Iteration 10: 13225.142 us/op
[info] Iteration 11: 12899.757 us/op
[info] Iteration 12: 12226.142 us/op
[info] Iteration 13: 13407.602 us/op
[info] Iteration 14: 14730.515 us/op
[info] Iteration 15: 13094.633 us/op
[info] Iteration 16: 13509.007 us/op
[info] Iteration 17: 13872.835 us/op
[info] Iteration 18: 12841.089 us/op
[info] Iteration 19: 13267.489 us/op
[info] Iteration 20: 12993.483 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_javaLinkedList":
[info] 13957.738 ±(99.9%) 1173.065 us/op [Average]
[info] (min, avg, max) = (12226.142, 13957.738, 17877.634), stdev = 1350.904
[info] CI (99.9%): [12784.673, 15130.804] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_list
[info] # Run progress: 66.67% complete, ETA 00:01:03
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1003469.513 us/op
[info] # Warmup Iteration 2: 11506.976 us/op
[info] # Warmup Iteration 3: 12058.907 us/op
[info] # Warmup Iteration 4: 9951.251 us/op
[info] # Warmup Iteration 5: 8045.037 us/op
[info] # Warmup Iteration 6: 6468.894 us/op
[info] # Warmup Iteration 7: 7254.164 us/op
[info] # Warmup Iteration 8: 7371.999 us/op
[info] # Warmup Iteration 9: 7081.658 us/op
[info] # Warmup Iteration 10: 6948.810 us/op
[info] Iteration 1: 7172.048 us/op
[info] Iteration 2: 7385.800 us/op
[info] Iteration 3: 7613.525 us/op
[info] Iteration 4: 7251.387 us/op
[info] Iteration 5: 7521.429 us/op
[info] Iteration 6: 7146.560 us/op
[info] Iteration 7: 7090.656 us/op
[info] Iteration 8: 7286.091 us/op
[info] Iteration 9: 7955.468 us/op
[info] Iteration 10: 7111.393 us/op
[info] Iteration 11: 6852.110 us/op
[info] Iteration 12: 8299.727 us/op
[info] Iteration 13: 7307.866 us/op
[info] Iteration 14: 7356.328 us/op
[info] Iteration 15: 6728.259 us/op
[info] Iteration 16: 7711.867 us/op
[info] Iteration 17: 7466.799 us/op
[info] Iteration 18: 6725.169 us/op
[info] Iteration 19: 6955.903 us/op
[info] Iteration 20: 7431.878 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_list":
[info] 7318.513 ±(99.9%) 338.853 us/op [Average]
[info] (min, avg, max) = (6725.169, 7318.513, 8299.727), stdev = 390.223
[info] CI (99.9%): [6979.661, 7657.366] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_listBuffer
[info] # Run progress: 83.33% complete, ETA 00:00:31
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 560266.282 us/op
[info] # Warmup Iteration 2: 12175.898 us/op
[info] # Warmup Iteration 3: 13248.476 us/op
[info] # Warmup Iteration 4: 9528.645 us/op
[info] # Warmup Iteration 5: 10803.114 us/op
[info] # Warmup Iteration 6: 8346.426 us/op
[info] # Warmup Iteration 7: 7647.554 us/op
[info] # Warmup Iteration 8: 8945.361 us/op
[info] # Warmup Iteration 9: 7824.007 us/op
[info] # Warmup Iteration 10: 9427.265 us/op
[info] Iteration 1: 8797.740 us/op
[info] Iteration 2: 8996.471 us/op
[info] Iteration 3: 9557.140 us/op
[info] Iteration 4: 8972.393 us/op
[info] Iteration 5: 9640.862 us/op
[info] Iteration 6: 9136.224 us/op
[info] Iteration 7: 9672.769 us/op
[info] Iteration 8: 9263.882 us/op
[info] Iteration 9: 8882.859 us/op
[info] Iteration 10: 8786.820 us/op
[info] Iteration 11: 8971.462 us/op
[info] Iteration 12: 9529.786 us/op
[info] Iteration 13: 9014.645 us/op
[info] Iteration 14: 9179.168 us/op
[info] Iteration 15: 8878.516 us/op
[info] Iteration 16: 9192.918 us/op
[info] Iteration 17: 8426.915 us/op
[info] Iteration 18: 9199.391 us/op
[info] Iteration 19: 8971.130 us/op
[info] Iteration 20: 9288.240 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_listBuffer":
[info] 9117.966 ±(99.9%) 274.766 us/op [Average]
[info] (min, avg, max) = (8426.915, 9117.966, 9672.769), stdev = 316.421
[info] CI (99.9%): [8843.200, 9392.733] (assumes normal distribution)
[info] # Run complete. Total time: 00:03:10
[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] AppendBenchmark_String_Large.append_javaLinkedList avgt 20 13681.851 ± 906.977 us/op
[info] AppendBenchmark_String_Large.append_list avgt 20 17245.067 ± 931.774 us/op
[info] AppendBenchmark_String_Large.append_listBuffer avgt 20 9562.832 ± 614.528 us/op
[info] AppendBenchmark_String_Large.prepend_javaLinkedList avgt 20 13957.738 ± 1173.065 us/op
[info] AppendBenchmark_String_Large.prepend_list avgt 20 7318.513 ± 338.853 us/op
[info] AppendBenchmark_String_Large.prepend_listBuffer avgt 20 9117.966 ± 274.766 us/op
[success] Total time: 212 s (03:32), completed Nov 7, 2024, 6:47:09 PM
[info] welcome to sbt 1.10.1 (Eclipse Adoptium Java 21.0.4)
[info] loading settings for project global-plugins from metals.sbt,plugins.sbt ...
[info] loading global plugins from /home/gaelrenoux/.sbt/1.0/plugins
[info] loading settings for project public-scalaio2024-benchmarks-build from plugins.sbt ...
[info] loading project definition from /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/project
[success] Generated .bloop/public-scalaio2024-benchmarks-build.json
[success] Total time: 0 s, completed Nov 7, 2024, 6:47:16 PM
[info] loading settings for project public-scalaio2024-benchmarks from build.sbt ...
[info] set current project to scalaio2024-benchmarks (in build file:/home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/)
[info] running (fork) org.openjdk.jmh.generators.bytecode.JmhBytecodeGenerator /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/classes /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/src_managed/jmh /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/resource_managed/jmh default
[info] Processing 1377 classes from /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/classes with "reflection" generator
[info] Writing out Java source to /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/src_managed/jmh and resources to /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/target/scala-3.5.1/resource_managed/jmh
[info] running (fork) org.openjdk.jmh.Main -i 20 -wi 10 -f1 -t1 .*chapter3.AppendBenchmark_String_Large
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_javaLinkedList
[info] # Run progress: 0.00% complete, ETA 00:03:00
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 338884.350 us/op
[info] # Warmup Iteration 2: 41717.946 us/op
[info] # Warmup Iteration 3: 55695.361 us/op
[info] # Warmup Iteration 4: 34234.513 us/op
[info] # Warmup Iteration 5: 43992.832 us/op
[info] # Warmup Iteration 6: 17257.726 us/op
[info] # Warmup Iteration 7: 16905.420 us/op
[info] # Warmup Iteration 8: 17823.247 us/op
[info] # Warmup Iteration 9: 13667.667 us/op
[info] # Warmup Iteration 10: 12093.530 us/op
[info] Iteration 1: 13974.584 us/op
[info] Iteration 2: 14285.657 us/op
[info] Iteration 3: 14150.701 us/op
[info] Iteration 4: 13219.056 us/op
[info] Iteration 5: 13714.631 us/op
[info] Iteration 6: 12811.011 us/op
[info] Iteration 7: 12352.053 us/op
[info] Iteration 8: 13644.518 us/op
[info] Iteration 9: 13420.426 us/op
[info] Iteration 10: 13752.618 us/op
[info] Iteration 11: 12556.227 us/op
[info] Iteration 12: 14532.874 us/op
[info] Iteration 13: 13210.871 us/op
[info] Iteration 14: 13504.910 us/op
[info] Iteration 15: 13400.693 us/op
[info] Iteration 16: 12612.918 us/op
[info] Iteration 17: 13199.632 us/op
[info] Iteration 18: 13592.732 us/op
[info] Iteration 19: 12621.849 us/op
[info] Iteration 20: 13721.323 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_javaLinkedList":
[info] 13413.964 ±(99.9%) 522.658 us/op [Average]
[info] (min, avg, max) = (12352.053, 13413.964, 14532.874), stdev = 601.894
[info] CI (99.9%): [12891.306, 13936.623] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_list
[info] # Run progress: 16.67% complete, ETA 00:02:47
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1205516.510 us/op
[info] # Warmup Iteration 2: 32114.427 us/op
[info] # Warmup Iteration 3: 32695.622 us/op
[info] # Warmup Iteration 4: 24412.450 us/op
[info] # Warmup Iteration 5: 22263.315 us/op
[info] # Warmup Iteration 6: 21605.275 us/op
[info] # Warmup Iteration 7: 20430.794 us/op
[info] # Warmup Iteration 8: 18269.839 us/op
[info] # Warmup Iteration 9: 18525.863 us/op
[info] # Warmup Iteration 10: 16584.599 us/op
[info] Iteration 1: 15593.828 us/op
[info] Iteration 2: 15521.170 us/op
[info] Iteration 3: 19894.900 us/op
[info] Iteration 4: 18257.234 us/op
[info] Iteration 5: 20410.012 us/op
[info] Iteration 6: 17055.628 us/op
[info] Iteration 7: 17671.437 us/op
[info] Iteration 8: 17336.523 us/op
[info] Iteration 9: 17703.384 us/op
[info] Iteration 10: 16526.970 us/op
[info] Iteration 11: 19324.640 us/op
[info] Iteration 12: 19732.449 us/op
[info] Iteration 13: 19075.703 us/op
[info] Iteration 14: 23422.781 us/op
[info] Iteration 15: 17871.529 us/op
[info] Iteration 16: 18308.576 us/op
[info] Iteration 17: 15972.274 us/op
[info] Iteration 18: 16757.490 us/op
[info] Iteration 19: 17408.677 us/op
[info] Iteration 20: 17692.500 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_list":
[info] 18076.885 ±(99.9%) 1624.667 us/op [Average]
[info] (min, avg, max) = (15521.170, 18076.885, 23422.781), stdev = 1870.969
[info] CI (99.9%): [16452.218, 19701.552] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_listBuffer
[info] # Run progress: 33.33% complete, ETA 00:02:10
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 343764.022 us/op
[info] # Warmup Iteration 2: 18806.765 us/op
[info] # Warmup Iteration 3: 15803.394 us/op
[info] # Warmup Iteration 4: 15079.709 us/op
[info] # Warmup Iteration 5: 11873.097 us/op
[info] # Warmup Iteration 6: 10538.300 us/op
[info] # Warmup Iteration 7: 11275.045 us/op
[info] # Warmup Iteration 8: 10175.874 us/op
[info] # Warmup Iteration 9: 10902.092 us/op
[info] # Warmup Iteration 10: 9762.933 us/op
[info] Iteration 1: 9408.798 us/op
[info] Iteration 2: 9712.280 us/op
[info] Iteration 3: 9370.096 us/op
[info] Iteration 4: 8794.783 us/op
[info] Iteration 5: 10139.213 us/op
[info] Iteration 6: 9056.016 us/op
[info] Iteration 7: 9100.224 us/op
[info] Iteration 8: 12019.495 us/op
[info] Iteration 9: 9273.984 us/op
[info] Iteration 10: 9123.174 us/op
[info] Iteration 11: 9463.073 us/op
[info] Iteration 12: 9267.941 us/op
[info] Iteration 13: 8988.990 us/op
[info] Iteration 14: 9776.669 us/op
[info] Iteration 15: 9062.980 us/op
[info] Iteration 16: 9668.147 us/op
[info] Iteration 17: 9724.584 us/op
[info] Iteration 18: 8796.765 us/op
[info] Iteration 19: 9291.779 us/op
[info] Iteration 20: 9274.704 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_listBuffer":
[info] 9465.685 ±(99.9%) 601.012 us/op [Average]
[info] (min, avg, max) = (8794.783, 9465.685, 12019.495), stdev = 692.127
[info] CI (99.9%): [8864.672, 10066.697] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_javaLinkedList
[info] # Run progress: 50.00% complete, ETA 00:01:36
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1037725.523 us/op
[info] # Warmup Iteration 2: 26253.328 us/op
[info] # Warmup Iteration 3: 24827.016 us/op
[info] # Warmup Iteration 4: 17129.499 us/op
[info] # Warmup Iteration 5: 20076.909 us/op
[info] # Warmup Iteration 6: 20662.506 us/op
[info] # Warmup Iteration 7: 13079.616 us/op
[info] # Warmup Iteration 8: 14078.030 us/op
[info] # Warmup Iteration 9: 15028.588 us/op
[info] # Warmup Iteration 10: 15260.052 us/op
[info] Iteration 1: 13750.338 us/op
[info] Iteration 2: 14126.726 us/op
[info] Iteration 3: 11864.637 us/op
[info] Iteration 4: 12090.359 us/op
[info] Iteration 5: 13943.468 us/op
[info] Iteration 6: 14593.986 us/op
[info] Iteration 7: 12868.657 us/op
[info] Iteration 8: 13528.065 us/op
[info] Iteration 9: 13183.572 us/op
[info] Iteration 10: 13268.164 us/op
[info] Iteration 11: 12542.424 us/op
[info] Iteration 12: 13152.442 us/op
[info] Iteration 13: 12507.688 us/op
[info] Iteration 14: 13029.977 us/op
[info] Iteration 15: 13433.684 us/op
[info] Iteration 16: 14826.289 us/op
[info] Iteration 17: 13199.762 us/op
[info] Iteration 18: 13912.735 us/op
[info] Iteration 19: 13018.859 us/op
[info] Iteration 20: 12781.559 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_javaLinkedList":
[info] 13281.170 ±(99.9%) 664.340 us/op [Average]
[info] (min, avg, max) = (11864.637, 13281.170, 14826.289), stdev = 765.055
[info] CI (99.9%): [12616.829, 13945.510] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_list
[info] # Run progress: 66.67% complete, ETA 00:01:04
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 558854.399 us/op
[info] # Warmup Iteration 2: 12162.838 us/op
[info] # Warmup Iteration 3: 11507.179 us/op
[info] # Warmup Iteration 4: 9023.109 us/op
[info] # Warmup Iteration 5: 8016.164 us/op
[info] # Warmup Iteration 6: 7667.159 us/op
[info] # Warmup Iteration 7: 9545.189 us/op
[info] # Warmup Iteration 8: 7332.290 us/op
[info] # Warmup Iteration 9: 7963.085 us/op
[info] # Warmup Iteration 10: 7504.102 us/op
[info] Iteration 1: 7618.900 us/op
[info] Iteration 2: 7293.917 us/op
[info] Iteration 3: 7326.501 us/op
[info] Iteration 4: 7563.150 us/op
[info] Iteration 5: 7320.499 us/op
[info] Iteration 6: 7359.127 us/op
[info] Iteration 7: 7267.230 us/op
[info] Iteration 8: 7428.213 us/op
[info] Iteration 9: 7205.746 us/op
[info] Iteration 10: 7756.136 us/op
[info] Iteration 11: 7067.711 us/op
[info] Iteration 12: 7214.581 us/op
[info] Iteration 13: 7238.849 us/op
[info] Iteration 14: 7321.656 us/op
[info] Iteration 15: 7502.173 us/op
[info] Iteration 16: 8299.278 us/op
[info] Iteration 17: 8413.559 us/op
[info] Iteration 18: 8741.075 us/op
[info] Iteration 19: 8652.671 us/op
[info] Iteration 20: 8975.053 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_list":
[info] 7678.301 ±(99.9%) 511.983 us/op [Average]
[info] (min, avg, max) = (7067.711, 7678.301, 8975.053), stdev = 589.600
[info] CI (99.9%): [7166.318, 8190.284] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_listBuffer
[info] # Run progress: 83.33% complete, ETA 00:00:31
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 503851.763 us/op
[info] # Warmup Iteration 2: 12616.423 us/op
[info] # Warmup Iteration 3: 10963.293 us/op
[info] # Warmup Iteration 4: 11428.128 us/op
[info] # Warmup Iteration 5: 9130.012 us/op
[info] # Warmup Iteration 6: 8152.993 us/op
[info] # Warmup Iteration 7: 9101.568 us/op
[info] # Warmup Iteration 8: 8776.388 us/op
[info] # Warmup Iteration 9: 8706.371 us/op
[info] # Warmup Iteration 10: 7716.376 us/op
[info] Iteration 1: 7966.207 us/op
[info] Iteration 2: 8146.337 us/op
[info] Iteration 3: 7823.205 us/op
[info] Iteration 4: 7908.185 us/op
[info] Iteration 5: 8355.304 us/op
[info] Iteration 6: 7106.899 us/op
[info] Iteration 7: 9480.869 us/op
[info] Iteration 8: 9215.608 us/op
[info] Iteration 9: 8732.427 us/op
[info] Iteration 10: 9136.783 us/op
[info] Iteration 11: 9198.457 us/op
[info] Iteration 12: 8813.998 us/op
[info] Iteration 13: 9680.210 us/op
[info] Iteration 14: 9234.344 us/op
[info] Iteration 15: 9121.203 us/op
[info] Iteration 16: 9266.779 us/op
[info] Iteration 17: 8993.261 us/op
[info] Iteration 18: 9316.353 us/op
[info] Iteration 19: 9292.489 us/op
[info] Iteration 20: 9078.208 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_listBuffer":
[info] 8793.356 ±(99.9%) 589.523 us/op [Average]
[info] (min, avg, max) = (7106.899, 8793.356, 9680.210), stdev = 678.895
[info] CI (99.9%): [8203.834, 9382.879] (assumes normal distribution)
[info] # Run complete. Total time: 00:03:11
[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] AppendBenchmark_String_Large.append_javaLinkedList avgt 20 13413.964 ± 522.658 us/op
[info] AppendBenchmark_String_Large.append_list avgt 20 18076.885 ± 1624.667 us/op
[info] AppendBenchmark_String_Large.append_listBuffer avgt 20 9465.685 ± 601.012 us/op
[info] AppendBenchmark_String_Large.prepend_javaLinkedList avgt 20 13281.170 ± 664.340 us/op
[info] AppendBenchmark_String_Large.prepend_list avgt 20 7678.301 ± 511.983 us/op
[info] AppendBenchmark_String_Large.prepend_listBuffer avgt 20 8793.356 ± 589.523 us/op
[success] Total time: 196 s (03:16), completed Nov 7, 2024, 6:50:32 PM
[info] welcome to sbt 1.10.1 (Eclipse Adoptium Java 21.0.4)
[info] loading settings for project global-plugins from metals.sbt,plugins.sbt ...
[info] loading global plugins from /home/gaelrenoux/.sbt/1.0/plugins
[info] loading settings for project public-scalaio2024-benchmarks-build from plugins.sbt ...
[info] loading project definition from /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/project
[success] Generated .bloop/public-scalaio2024-benchmarks-build.json
[success] Total time: 0 s, completed Nov 7, 2024, 6:50:39 PM
[info] loading settings for project public-scalaio2024-benchmarks from build.sbt ...
[info] set current project to scalaio2024-benchmarks (in build file:/home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/)
[info] running (fork) org.openjdk.jmh.Main -i 20 -wi 10 -f1 -t1 .*chapter3.AppendBenchmark_String_Large
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_javaLinkedList
[info] # Run progress: 0.00% complete, ETA 00:03:00
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1013624.807 us/op
[info] # Warmup Iteration 2: 57704.292 us/op
[info] # Warmup Iteration 3: 34547.688 us/op
[info] # Warmup Iteration 4: 55996.159 us/op
[info] # Warmup Iteration 5: 42673.959 us/op
[info] # Warmup Iteration 6: 43259.699 us/op
[info] # Warmup Iteration 7: 32269.422 us/op
[info] # Warmup Iteration 8: 21514.835 us/op
[info] # Warmup Iteration 9: 23325.115 us/op
[info] # Warmup Iteration 10: 14967.265 us/op
[info] Iteration 1: 15935.176 us/op
[info] Iteration 2: 18902.255 us/op
[info] Iteration 3: 16426.430 us/op
[info] Iteration 4: 15215.220 us/op
[info] Iteration 5: 11137.644 us/op
[info] Iteration 6: 10815.871 us/op
[info] Iteration 7: 14541.262 us/op
[info] Iteration 8: 15038.284 us/op
[info] Iteration 9: 13394.106 us/op
[info] Iteration 10: 18005.245 us/op
[info] Iteration 11: 13069.205 us/op
[info] Iteration 12: 17788.787 us/op
[info] Iteration 13: 12813.136 us/op
[info] Iteration 14: 13025.926 us/op
[info] Iteration 15: 12376.326 us/op
[info] Iteration 16: 12714.087 us/op
[info] Iteration 17: 14951.250 us/op
[info] Iteration 18: 14249.623 us/op
[info] Iteration 19: 13505.437 us/op
[info] Iteration 20: 12103.040 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_javaLinkedList":
[info] 14300.416 ±(99.9%) 1953.187 us/op [Average]
[info] (min, avg, max) = (10815.871, 14300.416, 18902.255), stdev = 2249.293
[info] CI (99.9%): [12347.229, 16253.603] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_list
[info] # Run progress: 16.67% complete, ETA 00:02:39
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1207122.520 us/op
[info] # Warmup Iteration 2: 30505.451 us/op
[info] # Warmup Iteration 3: 33944.464 us/op
[info] # Warmup Iteration 4: 28061.046 us/op
[info] # Warmup Iteration 5: 19259.392 us/op
[info] # Warmup Iteration 6: 18772.907 us/op
[info] # Warmup Iteration 7: 18023.238 us/op
[info] # Warmup Iteration 8: 16420.756 us/op
[info] # Warmup Iteration 9: 18906.351 us/op
[info] # Warmup Iteration 10: 17014.796 us/op
[info] Iteration 1: 16451.868 us/op
[info] Iteration 2: 16985.957 us/op
[info] Iteration 3: 16220.449 us/op
[info] Iteration 4: 16964.637 us/op
[info] Iteration 5: 17728.471 us/op
[info] Iteration 6: 17324.592 us/op
[info] Iteration 7: 17031.074 us/op
[info] Iteration 8: 14066.201 us/op
[info] Iteration 9: 17257.427 us/op
[info] Iteration 10: 17622.358 us/op
[info] Iteration 11: 15503.822 us/op
[info] Iteration 12: 18607.418 us/op
[info] Iteration 13: 17710.016 us/op
[info] Iteration 14: 16285.169 us/op
[info] Iteration 15: 19337.857 us/op
[info] Iteration 16: 18402.894 us/op
[info] Iteration 17: 15651.147 us/op
[info] Iteration 18: 15817.923 us/op
[info] Iteration 19: 16768.465 us/op
[info] Iteration 20: 19362.661 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_list":
[info] 17055.020 ±(99.9%) 1138.671 us/op [Average]
[info] (min, avg, max) = (14066.201, 17055.020, 19362.661), stdev = 1311.296
[info] CI (99.9%): [15916.349, 18193.692] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_listBuffer
[info] # Run progress: 33.33% complete, ETA 00:02:06
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 551231.430 us/op
[info] # Warmup Iteration 2: 16293.772 us/op
[info] # Warmup Iteration 3: 17215.573 us/op
[info] # Warmup Iteration 4: 12673.735 us/op
[info] # Warmup Iteration 5: 11426.347 us/op
[info] # Warmup Iteration 6: 10449.265 us/op
[info] # Warmup Iteration 7: 9851.472 us/op
[info] # Warmup Iteration 8: 10215.520 us/op
[info] # Warmup Iteration 9: 10220.762 us/op
[info] # Warmup Iteration 10: 9843.692 us/op
[info] Iteration 1: 8860.708 us/op
[info] Iteration 2: 15900.283 us/op
[info] Iteration 3: 8653.626 us/op
[info] Iteration 4: 13924.765 us/op
[info] Iteration 5: 9575.181 us/op
[info] Iteration 6: 9386.780 us/op
[info] Iteration 7: 9322.213 us/op
[info] Iteration 8: 9606.691 us/op
[info] Iteration 9: 9155.686 us/op
[info] Iteration 10: 8310.061 us/op
[info] Iteration 11: 10900.012 us/op
[info] Iteration 12: 11856.141 us/op
[info] Iteration 13: 10304.414 us/op
[info] Iteration 14: 10772.525 us/op
[info] Iteration 15: 10206.590 us/op
[info] Iteration 16: 10599.425 us/op
[info] Iteration 17: 8879.457 us/op
[info] Iteration 18: 10425.300 us/op
[info] Iteration 19: 9825.205 us/op
[info] Iteration 20: 9440.474 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_listBuffer":
[info] 10295.277 ±(99.9%) 1586.857 us/op [Average]
[info] (min, avg, max) = (8310.061, 10295.277, 15900.283), stdev = 1827.427
[info] CI (99.9%): [8708.420, 11882.134] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_javaLinkedList
[info] # Run progress: 50.00% complete, ETA 00:01:34
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 635005.206 us/op
[info] # Warmup Iteration 2: 23856.791 us/op
[info] # Warmup Iteration 3: 21811.591 us/op
[info] # Warmup Iteration 4: 37104.504 us/op
[info] # Warmup Iteration 5: 22821.623 us/op
[info] # Warmup Iteration 6: 16549.717 us/op
[info] # Warmup Iteration 7: 22489.889 us/op
[info] # Warmup Iteration 8: 15634.187 us/op
[info] # Warmup Iteration 9: 15509.205 us/op
[info] # Warmup Iteration 10: 12063.622 us/op
[info] Iteration 1: 11645.757 us/op
[info] Iteration 2: 18312.633 us/op
[info] Iteration 3: 16484.669 us/op
[info] Iteration 4: 12079.511 us/op
[info] Iteration 5: 13136.444 us/op
[info] Iteration 6: 13037.845 us/op
[info] Iteration 7: 13511.839 us/op
[info] Iteration 8: 11406.482 us/op
[info] Iteration 9: 16248.977 us/op
[info] Iteration 10: 16159.032 us/op
[info] Iteration 11: 15433.665 us/op
[info] Iteration 12: 13191.872 us/op
[info] Iteration 13: 17657.124 us/op
[info] Iteration 14: 17790.786 us/op
[info] Iteration 15: 14120.733 us/op
[info] Iteration 16: 16710.530 us/op
[info] Iteration 17: 17807.224 us/op
[info] Iteration 18: 14373.123 us/op
[info] Iteration 19: 16714.165 us/op
[info] Iteration 20: 17788.692 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_javaLinkedList":
[info] 15180.555 ±(99.9%) 1978.693 us/op [Average]
[info] (min, avg, max) = (11406.482, 15180.555, 18312.633), stdev = 2278.666
[info] CI (99.9%): [13201.862, 17159.248] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_list
[info] # Run progress: 66.67% complete, ETA 00:01:03
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 524290.651 us/op
[info] # Warmup Iteration 2: 11440.191 us/op
[info] # Warmup Iteration 3: 12215.969 us/op
[info] # Warmup Iteration 4: 8898.281 us/op
[info] # Warmup Iteration 5: 7763.600 us/op
[info] # Warmup Iteration 6: 7720.690 us/op
[info] # Warmup Iteration 7: 6697.156 us/op
[info] # Warmup Iteration 8: 7444.577 us/op
[info] # Warmup Iteration 9: 7574.189 us/op
[info] # Warmup Iteration 10: 7601.686 us/op
[info] Iteration 1: 6927.856 us/op
[info] Iteration 2: 7214.587 us/op
[info] Iteration 3: 7493.990 us/op
[info] Iteration 4: 7558.530 us/op
[info] Iteration 5: 7345.251 us/op
[info] Iteration 6: 6693.215 us/op
[info] Iteration 7: 7536.979 us/op
[info] Iteration 8: 7784.386 us/op
[info] Iteration 9: 7284.807 us/op
[info] Iteration 10: 6998.480 us/op
[info] Iteration 11: 7229.240 us/op
[info] Iteration 12: 7320.291 us/op
[info] Iteration 13: 7461.267 us/op
[info] Iteration 14: 6826.642 us/op
[info] Iteration 15: 7383.218 us/op
[info] Iteration 16: 7442.097 us/op
[info] Iteration 17: 7369.458 us/op
[info] Iteration 18: 7075.678 us/op
[info] Iteration 19: 7711.703 us/op
[info] Iteration 20: 7549.886 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_list":
[info] 7310.378 ±(99.9%) 249.613 us/op [Average]
[info] (min, avg, max) = (6693.215, 7310.378, 7784.386), stdev = 287.454
[info] CI (99.9%): [7060.765, 7559.991] (assumes normal distribution)
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_listBuffer
[info] # Run progress: 83.33% complete, ETA 00:00:31
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1013722.169 us/op
[info] # Warmup Iteration 2: 12390.982 us/op
[info] # Warmup Iteration 3: 10441.956 us/op
[info] # Warmup Iteration 4: 10115.876 us/op
[info] # Warmup Iteration 5: 9539.749 us/op
[info] # Warmup Iteration 6: 8570.237 us/op
[info] # Warmup Iteration 7: 8239.247 us/op
[info] # Warmup Iteration 8: 8337.462 us/op
[info] # Warmup Iteration 9: 7941.949 us/op
[info] # Warmup Iteration 10: 7637.073 us/op
[info] Iteration 1: 7389.877 us/op
[info] Iteration 2: 8136.927 us/op
[info] Iteration 3: 7678.382 us/op
[info] Iteration 4: 7661.751 us/op
[info] Iteration 5: 8203.613 us/op
[info] Iteration 6: 7573.787 us/op
[info] Iteration 7: 7313.290 us/op
[info] Iteration 8: 8428.656 us/op
[info] Iteration 9: 7302.207 us/op
[info] Iteration 10: 8591.696 us/op
[info] Iteration 11: 7792.036 us/op
[info] Iteration 12: 7790.643 us/op
[info] Iteration 13: 8294.349 us/op
[info] Iteration 14: 7622.573 us/op
[info] Iteration 15: 7320.722 us/op
[info] Iteration 16: 8247.557 us/op
[info] Iteration 17: 7356.115 us/op
[info] Iteration 18: 8156.473 us/op
[info] Iteration 19: 7875.558 us/op
[info] Iteration 20: 7426.753 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.prepend_listBuffer":
[info] 7808.148 ±(99.9%) 356.933 us/op [Average]
[info] (min, avg, max) = (7302.207, 7808.148, 8591.696), stdev = 411.045
[info] CI (99.9%): [7451.215, 8165.082] (assumes normal distribution)
[info] # Run complete. Total time: 00:03:09
[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] AppendBenchmark_String_Large.append_javaLinkedList avgt 20 14300.416 ± 1953.187 us/op
[info] AppendBenchmark_String_Large.append_list avgt 20 17055.020 ± 1138.671 us/op
[info] AppendBenchmark_String_Large.append_listBuffer avgt 20 10295.277 ± 1586.857 us/op
[info] AppendBenchmark_String_Large.prepend_javaLinkedList avgt 20 15180.555 ± 1978.693 us/op
[info] AppendBenchmark_String_Large.prepend_list avgt 20 7310.378 ± 249.613 us/op
[info] AppendBenchmark_String_Large.prepend_listBuffer avgt 20 7808.148 ± 356.933 us/op
[success] Total time: 193 s (03:13), completed Nov 7, 2024, 6:53:53 PM
[info] welcome to sbt 1.10.1 (Eclipse Adoptium Java 21.0.4)
[info] loading settings for project global-plugins from metals.sbt,plugins.sbt ...
[info] loading global plugins from /home/gaelrenoux/.sbt/1.0/plugins
[info] loading settings for project public-scalaio2024-benchmarks-build from plugins.sbt ...
[info] loading project definition from /home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/project
[success] Generated .bloop/public-scalaio2024-benchmarks-build.json
[success] Total time: 0 s, completed Nov 7, 2024, 6:54:00 PM
[info] loading settings for project public-scalaio2024-benchmarks from build.sbt ...
[info] set current project to scalaio2024-benchmarks (in build file:/home/gaelrenoux/Repositories/DataDome/public-scalaio2024-benchmarks/)
[info] running (fork) org.openjdk.jmh.Main -i 20 -wi 10 -f1 -t1 .*chapter3.AppendBenchmark_String_Large
[info] # JMH version: 1.37
[info] # VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7-LTS
[info] # VM invoker: /home/gaelrenoux/.sdkman/candidates/java/21.0.4-tem/bin/java
[info] # VM options: -server -Xms1g -Xmx1g -XX:NewSize=512m -XX:MaxNewSize=512m -XX:InitialCodeCacheSize=256m -XX:ReservedCodeCacheSize=256m -XX:+UseParallelGC -XX:MaxInlineLevel=18 -XX:+AlwaysPreTouch
[info] # Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
[info] # Warmup: 10 iterations, 1 s each
[info] # Measurement: 20 iterations, 1 s each
[info] # Timeout: 10 min per iteration
[info] # Threads: 1 thread, will synchronize iterations
[info] # Benchmark mode: Average time, time/op
[info] # Benchmark: co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_javaLinkedList
[info] # Run progress: 0.00% complete, ETA 00:03:00
[info] # Fork: 1 of 1
[info] # Warmup Iteration 1: 1077984.159 us/op
[info] # Warmup Iteration 2: 40549.741 us/op
[info] # Warmup Iteration 3: 55924.631 us/op
[info] # Warmup Iteration 4: 33952.251 us/op
[info] # Warmup Iteration 5: 60030.375 us/op
[info] # Warmup Iteration 6: 69150.787 us/op
[info] # Warmup Iteration 7: 20594.384 us/op
[info] # Warmup Iteration 8: 26340.476 us/op
[info] # Warmup Iteration 9: 23069.985 us/op
[info] # Warmup Iteration 10: 19198.200 us/op
[info] Iteration 1: 13014.034 us/op
[info] Iteration 2: 17944.172 us/op
[info] Iteration 3: 18187.082 us/op
[info] Iteration 4: 11095.243 us/op
[info] Iteration 5: 14800.657 us/op
[info] Iteration 6: 16257.459 us/op
[info] Iteration 7: 11798.484 us/op
[info] Iteration 8: 13317.356 us/op
[info] Iteration 9: 13069.443 us/op
[info] Iteration 10: 16302.823 us/op
[info] Iteration 11: 11648.026 us/op
[info] Iteration 12: 13905.404 us/op
[info] Iteration 13: 12781.044 us/op
[info] Iteration 14: 12763.975 us/op
[info] Iteration 15: 12778.090 us/op
[info] Iteration 16: 12978.327 us/op
[info] Iteration 17: 12878.999 us/op
[info] Iteration 18: 12079.435 us/op
[info] Iteration 19: 13502.920 us/op
[info] Iteration 20: 12831.473 us/op
[info] Result "co.datadome.pub.scalaio2024.benchmarks.chapter3.AppendBenchmark_String_Large.append_javaLinkedList":
[info] 13696.722 ±(99.9%) 1731.289 us/op [Average]
[info] (min, avg, max) = (11095.243, 13696.722, 18187.082), stdev = 1993.755
[info] CI (99.9%): [11965.434, 15428.011] (assumes normal distribution)