kotlinx-benchmark | Kotlin multiplatform benchmarking toolkit | Plugin library
kandi X-RAY | kotlinx-benchmark Summary
kandi X-RAY | kotlinx-benchmark Summary
NOTE: Starting from version 0.3.0 of the library: The library runtime is published to Maven Central and no longer published to Bintray. The Gradle plugin is published to Gradle Plugin Portal The Gradle plugin id has changed to org.jetbrains.kotlinx.benchmark The library runtime artifact id has changed to kotlinx-benchmark-runtime. kotlinx.benchmark is a toolkit for running benchmarks for multiplatform code written in Kotlin and running on the following supported targets: JVM, JavaScript and Native. If you're familiar with JMH, it is very similar and uses it under the hoods to run benchmarks on JVM.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of kotlinx-benchmark
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Trending Discussions on kotlinx-benchmark
QUESTION
I'm testing with the following class (You can find a git repository here):
...ANSWER
Answered 2020-Dec-03 at 14:54You simply can't use measureNanoTime
for microbenchmarks like this: that result is completely unreliable. A big reason for that are optimizations made at runtime by the JVM, as well as non-deterministic behavior like GC or system effects like power management, OS scheduling, and time sharing.
The entire point of JMH is to create a harness which attempts to work around all of these issues, to produce more reliable micro-benchmarking results.
See the article Avoiding Benchmarking Pitfalls on the JVM for a deeper discussion of the issues.
Aleksey Shipilëv, one of the maintainers of JMH, has many fascinating articles and talks about the subject. See:
- https://shipilev.net/#benchmarking ("Two Timestamps" Story)
- https://shipilev.net/#benchmarking-1 ("The Lesser of Two Evils" Story)
See also: How do I write a correct micro-benchmark in Java?.
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