Run specific class or function

[theapache64]

How can I run specific benchmark class or function? I am looking for something like

./gradlew benchmark -Pbenchmarks="*Day1Benchmark*substringSolution"

[fzhinkin]

@theapache64, right now, the only way to filter benchmark is by creating a new (or updating existing) configuration. See include/exclude options here.

For JVM, however, you can generate a benchmarks Jar and use it directly, and pass an RE to filter benchmarks.

[theapache64]

Oops! That sounds like pain... :D Looking forward to some IDE magic!... Thanks for the suggestion though

[teenriot]

"That sounds like pain"

Thats what i thought too. But how often do you create new Benchmarks? I simply made a gradle function to register a specific benchmark subset. From there its a gradle one liner for every specific run you need. Thats manageable without wasting time or ruining your gradle script.

benchmark {
    targets {
        register("benchmark")
    }

    configurations {
        registerStartsWith("####Playground")
        registerStartsWith("CreateUnmodifiableEmpty")
        registerStartsWith("CreateUnmodifiableFromVararg")
        ...
    }
}

fun NamedDomainObjectContainerScope<BenchmarkConfiguration>.registerStartsWith(startsWith : String) {
    val filterName = startsWith.substringAfterLast("#").substringAfterLast("_")
    val filter = "(?i)${Regex.escape(filterName)}.*"
    register(startsWith + "_accurate") {
        include(filter)
        advanced("jvmForks", "definedByJmh")
        warmups = 5
        iterations = 10
        iterationTime = 1000
        iterationTimeUnit = "ms"
    }
    register(startsWith + "_normal") {
        include(filter)
        warmups = 5
        iterations = 10
        iterationTime = 500
        iterationTimeUnit = "ms"
    }
    register(startsWith + "_quick") {
        include(filter)
        warmups = 3
        iterations = 3
        iterationTime = 500
        iterationTimeUnit = "ms"
    }
}