org.openjdk.jmh.annotations

Enum Mode

    • Enum Constant Detail

      • Throughput

        public static final Mode Throughput

        Throughput: operations per unit of time.

        Runs by continuously calling Benchmark methods, counting the total throughput over all worker threads. This mode is time-based, and it will run until the iteration time expires.

      • AverageTime

        public static final Mode AverageTime

        Average time: average time per per operation.

        Runs by continuously calling Benchmark methods, counting the average time to call over all worker threads. This is the inverse of Throughput, but with different aggregation policy. This mode is time-based, and it will run until the iteration time expires.

      • SampleTime

        public static final Mode SampleTime

        Sample time: samples the time for each operation.

        Runs by continuously calling Benchmark methods, and randomly samples the time needed for the call. This mode automatically adjusts the sampling frequency, but may omit some pauses which missed the sampling measurement. This mode is time-based, and it will run until the iteration time expires.

      • SingleShotTime

        public static final Mode SingleShotTime

        Single shot time: measures the time for a single operation.

        Runs by calling Benchmark once and measuring its time. This mode is useful to estimate the "cold" performance when you don't want to hide the warmup invocations, or if you want to see the progress from call to call, or you want to record every single sample. This mode is work-based, and will run only for a single invocation of Benchmark method.

        Caveats for this mode include:
        • More warmup/measurement iterations are generally required.
        • Timers overhead might be significant if benchmarks are small; switch to SampleTime mode if that is a problem.
      • All

        public static final Mode All
        Meta-mode: all the benchmark modes. This is mostly useful for internal JMH testing.
    • Method Detail

      • values

        public static Mode[] values()
        Returns an array containing the constants of this enum type, inthe order they are declared. This method may be used to iterateover the constants as follows:
        for (Mode c : Mode.values())    System.out.println(c);
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static Mode valueOf(String name)
        Returns the enum constant of this type with the specified name.The string must match exactly an identifier used to declare anenum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        IllegalArgumentException - if this enum type has no constant with the specified name
        NullPointerException - if the argument is null
      • shortLabel

        public String shortLabel()
      • longLabel

        public String longLabel()
      • deepValueOf

        public static Mode deepValueOf(String name)

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