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[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------< dev.openfeature:sdk >-------------------------
[INFO] Building OpenFeature Java SDK 1.12.0
[INFO] from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[WARNING] Parameter 'encoding' is unknown for plugin 'maven-checkstyle-plugin:3.5.0:check (validate)'
[INFO]
[INFO] >>> jmh:0.2.2:benchmark (default-cli) > process-test-resources @ sdk >>>
[INFO]
[INFO] --- checkstyle:3.5.0:check (validate) @ sdk ---
[INFO] Starting audit...
Audit done.
[INFO] You have 0 Checkstyle violations.
[INFO]
[INFO] --- jacoco:0.8.12:prepare-agent (prepare-agent) @ sdk ---
[INFO] surefireArgLine set to -javaagent:/home/todd/.m2/repository/org/jacoco/org.jacoco.agent/0.8.12/org.jacoco.agent-0.8.12-runtime.jar=destfile=/home/todd/git/java-sdk/target/coverage-reports/jacoco-ut.exec
[INFO]
[INFO] --- resources:3.3.1:resources (default-resources) @ sdk ---
[INFO] skip non existing resourceDirectory /home/todd/git/java-sdk/src/main/resources
[INFO]
[INFO] --- compiler:3.13.0:compile (default-compile) @ sdk ---
[INFO] Recompiling the module because of changed source code.
[INFO] Compiling 65 source files with javac [debug target 1.8] to target/classes
[WARNING] bootstrap class path not set in conjunction with -source 8
[WARNING] source value 8 is obsolete and will be removed in a future release
[WARNING] target value 8 is obsolete and will be removed in a future release
[WARNING] To suppress warnings about obsolete options, use -Xlint:-options.
[INFO] Annotation processing is enabled because one or more processors were found
on the class path. A future release of javac may disable annotation processing
unless at least one processor is specified by name (-processor), or a search
path is specified (--processor-path, --processor-module-path), or annotation
processing is enabled explicitly (-proc:only, -proc:full).
Use -Xlint:-options to suppress this message.
Use -proc:none to disable annotation processing.
[WARNING] /home/todd/git/java-sdk/src/main/java/dev/openfeature/sdk/MutableStructure.java:[19,1] Generating equals/hashCode implementation but without a call to superclass, even though this class does not extend java.lang.Object. If this is intentional, add '@EqualsAndHashCode(callSuper=false)' to your type.
[WARNING] /home/todd/git/java-sdk/src/main/java/dev/openfeature/sdk/ImmutableStructure.java:[22,1] Generating equals/hashCode implementation but without a call to superclass, even though this class does not extend java.lang.Object. If this is intentional, add '@EqualsAndHashCode(callSuper=false)' to your type.
[WARNING] /home/todd/git/java-sdk/src/main/java/dev/openfeature/sdk/EventDetails.java:[9,1] Generating equals/hashCode implementation but without a call to superclass, even though this class does not extend java.lang.Object. If this is intentional, add '@EqualsAndHashCode(callSuper=false)' to your type.
[WARNING] /home/todd/git/java-sdk/src/main/java/dev/openfeature/sdk/Value.java:[27,26] finalize() in java.lang.Object has been deprecated and marked for removal
[INFO] /home/todd/git/java-sdk/src/main/java/dev/openfeature/sdk/NoOpProvider.java: Some input files use or override a deprecated API.
[INFO] /home/todd/git/java-sdk/src/main/java/dev/openfeature/sdk/NoOpProvider.java: Recompile with -Xlint:deprecation for details.
[INFO] /home/todd/git/java-sdk/src/main/java/dev/openfeature/sdk/Value.java: Some input files use unchecked or unsafe operations.
[INFO] /home/todd/git/java-sdk/src/main/java/dev/openfeature/sdk/Value.java: Recompile with -Xlint:unchecked for details.
[INFO]
[INFO] --- resources:3.3.1:testResources (default-testResources) @ sdk ---
[INFO] Copying 2 resources from src/test/resources to target/test-classes
[INFO]
[INFO] <<< jmh:0.2.2:benchmark (default-cli) < process-test-resources @ sdk <<<
[INFO]
[INFO]
[INFO] --- jmh:0.2.2:benchmark (default-cli) @ sdk ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 52 source files to /home/todd/git/java-sdk/target/test-classes
[INFO] /home/todd/git/java-sdk/src/test/java/dev/openfeature/sdk/LockingTest.java: Some input files use or override a deprecated API.
[INFO] /home/todd/git/java-sdk/src/test/java/dev/openfeature/sdk/LockingTest.java: Recompile with -Xlint:deprecation for details.
[INFO] /home/todd/git/java-sdk/src/test/java/dev/openfeature/sdk/internal/TriConsumerTest.java: Some input files use unchecked or unsafe operations.
[INFO] /home/todd/git/java-sdk/src/test/java/dev/openfeature/sdk/internal/TriConsumerTest.java: Recompile with -Xlint:unchecked for details.
[INFO] Executing the JMH benchmarks
# JMH version: 1.37
# VM version: JDK 21.0.4, OpenJDK 64-Bit Server VM, 21.0.4+7
# VM invoker: /usr/lib/jvm/java-21-openjdk/bin/java
# VM options: -Xmx1024m -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -Xmx1024m -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
# Blackhole mode: compiler (auto-detected, use -Djmh.blackhole.autoDetect=false to disable)
# Warmup: <none>
# Measurement: 1 iterations, single-shot each
# Timeout: 10 min per iteration
# Threads: 1 thread
# Benchmark mode: Single shot invocation time
# Benchmark: dev.openfeature.sdk.benchmark.AllocationBenchmark.run
# Run progress: 0.00% complete, ETA 00:00:00
# Fork: 1 of 1
[0.001s][warning][gc,init] Consider setting -Xms equal to -Xmx to avoid resizing hiccups
[0.001s][warning][gc,init] Consider enabling -XX:+AlwaysPreTouch to avoid memory commit hiccups
Iteration 1: num #instances #bytes class name (module)
-------------------------------------------------------
1: 1146984 55055232 java.util.HashMap (java.base@21.0.4)
2: 700056 11200896 java.util.HashMap$EntrySet (java.base@21.0.4)
3: 47757 9295888 [B (java.base@21.0.4)
4: 305989 8105752 [Ljava.lang.Object; (java.base@21.0.4)
5: 482225 7715600 dev.openfeature.sdk.ImmutableStructure
6: 472225 7555600 dev.openfeature.sdk.ImmutableContext
7: 100000 4000000 dev.openfeature.sdk.HookContext
8: 100000 4000000 dev.openfeature.sdk.HookContext$HookContextBuilder
9: 154 2995712 [Ljdk.internal.vm.FillerElement; (java.base@21.0.4)
10: 122807 2947368 java.util.ArrayList (java.base@21.0.4)
11: 50000 2000000 dev.openfeature.sdk.FlagEvaluationDetails
12: 50000 2000000 dev.openfeature.sdk.ProviderEvaluation
13: 50002 1600064 java.util.Collections$UnmodifiableMap (java.base@21.0.4)
14: 100001 1600016 dev.openfeature.sdk.NoOpProvider$$Lambda/0x000074760c02fa78
15: 50000 1600000 [Ljava.util.List; (java.base@21.0.4)
16: 100000 1600000 dev.openfeature.sdk.ImmutableMetadata
17: 100000 1600000 dev.openfeature.sdk.ImmutableMetadata$ImmutableMetadataBuilder
18: 100000 1600000 dev.openfeature.sdk.OpenFeatureClient$$Lambda/0x000074760c0821f8
19: 43808 1401856 java.util.ArrayList$Itr (java.base@21.0.4)
20: 50000 1200000 dev.openfeature.sdk.FlagEvaluationOptions
21: 56919 910704 java.util.Optional (java.base@21.0.4)
22: 34754 834096 dev.openfeature.sdk.FlagEvaluationOptions$FlagEvaluationOptionsBuilder
23: 4489 679248 [I (java.base@21.0.4)
24: 26554 637296 java.lang.String (java.base@21.0.4)
25: 12462 598176 dev.openfeature.sdk.FlagEvaluationDetails$FlagEvaluationDetailsBuilder
26: 13748 549920 dev.openfeature.sdk.ProviderEvaluation$ProviderEvaluationBuilder
27: 16418 394032 dev.openfeature.sdk.HookSupport$$Lambda/0x000074760c081230
28: 1461 390008 [J (java.base@21.0.4)
29: 24033 384528 dev.openfeature.sdk.internal.AutoCloseableReentrantReadWriteLock$$Lambda/0x000074760c02eae8
30: 14591 350184 dev.openfeature.sdk.HookSupport$$Lambda/0x000074760c081000
31: 2355 288104 java.lang.Class (java.base@21.0.4)
32: 8141 260512 java.util.HashMap$EntryIterator (java.base@21.0.4)
33: 4610 258160 jdk.internal.org.objectweb.asm.SymbolTable$Entry (java.base@21.0.4)
34: 10001 240024 java.lang.Double (java.base@21.0.4)
35: 2502 180144 java.lang.reflect.Field (java.base@21.0.4)
36: 10000 160000 dev.openfeature.sdk.Value
37: 6004 144096 java.lang.StringBuilder (java.base@21.0.4)
38: 179 139928 [Ljdk.internal.org.objectweb.asm.SymbolTable$Entry; (java.base@21.0.4)
39: 3824 122368 java.util.concurrent.ConcurrentHashMap$Node (java.base@21.0.4)
40: 48 122168 [C (java.base@21.0.4)
41: 1440 113512 [S (java.base@21.0.4)
42: 1201 105688 java.lang.reflect.Method (java.base@21.0.4)
43: 3030 79616 [Ljava.lang.Class; (java.base@21.0.4)
44: 1349 75544 jdk.internal.org.objectweb.asm.Label (java.base@21.0.4)
45: 1550 74400 java.lang.invoke.MemberName (java.base@21.0.4)
46: 332 74368 jdk.internal.org.objectweb.asm.MethodWriter (java.base@21.0.4)
47: 1794 71760 java.lang.invoke.MethodType (java.base@21.0.4)
48: 1089 69696 java.net.URL (java.base@21.0.4)
49: 2011 64352 java.util.HashMap$Node (java.base@21.0.4)
50: 121 50512 [Ljava.util.concurrent.ConcurrentHashMap$Node; (java.base@21.0.4)
51: 3140 50240 jdk.internal.util.StrongReferenceKey (java.base@21.0.4)
52: 491 49608 [Ljava.util.HashMap$Node; (java.base@21.0.4)
53: 1057 42280 java.io.ObjectStreamField (java.base@21.0.4)
54: 1225 39200 java.io.File (java.base@21.0.4)
55: 779 37392 jdk.internal.org.objectweb.asm.Frame (java.base@21.0.4)
56: 243 25272 java.util.jar.JarFile$JarFileEntry (java.base@21.0.4)
57: 793 25224 [Ljava.lang.String; (java.base@21.0.4)
58: 622 24880 java.lang.NoSuchFieldException (java.base@21.0.4)
59: 571 22840 java.util.LinkedHashMap$Entry (java.base@21.0.4)
60: 473 22704 jdk.internal.ref.CleanerImpl$PhantomCleanableRef (java.base@21.0.4)
61: 689 22048 jdk.internal.util.WeakReferenceKey (java.base@21.0.4)
62: 824 19776 jdk.internal.org.objectweb.asm.ByteVector (java.base@21.0.4)
63: 248 18848 [Ljava.lang.ref.SoftReference; (java.base@21.0.4)
64: 117 17784 jdk.internal.org.objectweb.asm.ClassWriter (java.base@21.0.4)
65: 380 16824 [Ljava.lang.invoke.LambdaForm$Name; (java.base@21.0.4)
66: 625 15000 java.lang.Long (java.base@21.0.4)
67: 463 14816 java.lang.invoke.LambdaForm$Name (java.base@21.0.4)
68: 903 14448 java.lang.Object (java.base@21.0.4)
69: 198 14256 java.lang.reflect.Constructor (java.base@21.0.4)
70: 249 13944 java.util.zip.ZipFile$ZipFileInputStream (java.base@21.0.4)
71: 334 13360 jdk.internal.org.objectweb.asm.Handler (java.base@21.0.4)
72: 202 12928 java.util.concurrent.ConcurrentHashMap (java.base@21.0.4)
73: 201 12864 jdk.internal.org.objectweb.asm.FieldWriter (java.base@21.0.4)
74: 316 12640 java.util.WeakHashMap$Entry (java.base@21.0.4)
75: 102 12240 java.io.ObjectStreamClass (java.base@21.0.4)
76: 249 11952 java.util.zip.ZipFile$ZipFileInflaterInputStream (java.base@21.0.4)
77: 359 11488 jdk.internal.org.objectweb.asm.Type (java.base@21.0.4)
78: 464 11136 jdk.internal.org.objectweb.asm.Edge (java.base@21.0.4)
79: 463 11112 java.lang.invoke.ResolvedMethodName (java.base@21.0.4)
80: 341 10912 jdk.internal.math.FDBigInteger (java.base@21.0.4)
81: 94 10728 [Ljava.lang.reflect.Field; (java.base@21.0.4)
82: 266 10640 java.lang.NoSuchMethodException (java.base@21.0.4)
83: 266 10640 java.security.CodeSource (java.base@21.0.4)
84: 264 10560 sun.security.util.KnownOIDs (java.base@21.0.4)
85: 218 10464 java.lang.invoke.DirectMethodHandle$Constructor (java.base@21.0.4)
86: 75 10200 sun.nio.fs.UnixFileAttributes (java.base@21.0.4)
87: 123 9840 jdk.internal.event.DeserializationEvent (java.base@21.0.4)
88: 245 9800 java.lang.ref.SoftReference (java.base@21.0.4)
89: 115 9200 [Ljava.util.WeakHashMap$Entry; (java.base@21.0.4)
90: 368 8832 java.lang.module.ModuleDescriptor$Exports (java.base@21.0.4)
91: 63 8384 [Ljava.lang.invoke.MethodHandle; (java.base@21.0.4)
92: 146 8176 java.io.FileCleanable (java.base@21.0.4)
93: 125 8000 java.lang.Class$ReflectionData (java.base@21.0.4)
94: 322 7728 java.util.ImmutableCollections$Set12 (java.base@21.0.4)
95: 120 7680 jdk.internal.org.objectweb.asm.SymbolTable (java.base@21.0.4)
96: 69 7176 java.lang.invoke.InnerClassLambdaMetafactory (java.base@21.0.4)
97: 144 6912 jdk.internal.org.objectweb.asm.AnnotationWriter (java.base@21.0.4)
98: 167 6680 jdk.internal.loader.URLClassPath$JarLoader$2 (java.base@21.0.4)
99: 196 6272 java.lang.invoke.MethodHandles$Lookup (java.base@21.0.4)
100: 156 6240 java.util.StringJoiner (java.base@21.0.4)
101: 153 6120 java.io.FileDescriptor (java.base@21.0.4)
102: 126 6048 java.lang.invoke.LambdaForm (java.base@21.0.4)
103: 77 6016 [Ljava.lang.reflect.Method; (java.base@21.0.4)
104: 249 5976 java.util.zip.ZipFile$InflaterCleanupAction (java.base@21.0.4)
105: 370 5920 java.lang.Byte (java.base@21.0.4)
106: 74 5920 java.util.zip.ZipFile$Source (java.base@21.0.4)
107: 82 5720 [Ljava.io.ObjectStreamField; (java.base@21.0.4)
108: 40 5640 [Ljava.lang.ClassValue$Entry; (java.base@21.0.4)
109: 234 5616 java.util.jar.Attributes$Name (java.base@21.0.4)
110: 174 5568 java.util.concurrent.locks.ReentrantLock$NonfairSync (java.base@21.0.4)
111: 98 5488 java.lang.Module (java.base@21.0.4)
112: 219 5256 java.lang.PublicMethods$MethodList (java.base@21.0.4)
113: 65 5200 java.net.URI (java.base@21.0.4)
114: 215 5104 [Ljdk.internal.org.objectweb.asm.Type; (java.base@21.0.4)
115: 158 5056 java.lang.invoke.MethodTypeForm (java.base@21.0.4)
116: 152 4864 java.nio.file.attribute.FileTime (java.base@21.0.4)
117: 301 4816 java.util.HashSet (java.base@21.0.4)
118: 75 4800 java.util.zip.Inflater (java.base@21.0.4)
truncated...
Total 4474389 138762960
0.113 s/op
+totalAllocatedBytes: 138762960.000 bytes
+totalAllocatedInstances: 4474389.000 instances
+totalHeap: 521412608.000 bytes
Secondary result "dev.openfeature.sdk.benchmark.AllocationBenchmark.run:+totalAllocatedBytes":
138762960.000 bytes
Secondary result "dev.openfeature.sdk.benchmark.AllocationBenchmark.run:+totalAllocatedInstances":
4474389.000 instances
Secondary result "dev.openfeature.sdk.benchmark.AllocationBenchmark.run:+totalHeap":
521412608.000 bytes
# Run complete. Total time: 00:00:00
REMEMBER: The numbers below are just data. To gain reusable insights, you need to follow up on
why the numbers are the way they are. Use profilers (see -prof, -lprof), design factorial
experiments, perform baseline and negative tests that provide experimental control, make sure
the benchmarking environment is safe on JVM/OS/HW level, ask for reviews from the domain experts.
Do not assume the numbers tell you what you want them to tell.
NOTE: Current JVM experimentally supports Compiler Blackholes, and they are in use. Please exercise
extra caution when trusting the results, look into the generated code to check the benchmark still
works, and factor in a small probability of new VM bugs. Additionally, while comparisons between
different JVMs are already problematic, the performance difference caused by different Blackhole
modes can be very significant. Please make sure you use the consistent Blackhole mode for comparisons.
Benchmark Mode Cnt Score Error Units
AllocationBenchmark.run ss 0.113 s/op
AllocationBenchmark.run:+totalAllocatedBytes ss 138762960.000 bytes
AllocationBenchmark.run:+totalAllocatedInstances ss 4474389.000 instances
AllocationBenchmark.run:+totalHeap ss 521412608.000 bytes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.073 s
[INFO] Finished at: 2024-10-10T12:26:18-04:00
[INFO] ------------------------------------------------------------------------