module FartCpuPing

FartCpuPing — local CPU micro-benchmark for !fart footer (nanosecond timing). Public: sample_ns, format_ns Depends: (none) Tests: test/lib/fart_cpu_ping_test.rb, test/plugins/fart_test.rb

Constants

DEFAULT_SAMPLES

Public Instance Methods

default_clock ()

Source

# File lib/fart_cpu_ping.rb, line 29
def default_clock
  -> { Process.clock_gettime(Process::CLOCK_MONOTONIC, :nanosecond) }
end

default_work ()

Source

# File lib/fart_cpu_ping.rb, line 33
def default_work
  -> { 1 + 1 }
end

format_ns (ns)

Source

# File lib/fart_cpu_ping.rb, line 23
def format_ns(ns)
  return nil if ns.nil?

  "#{ns}ns"
end

sample_ns (samples: DEFAULT_SAMPLES, clock: default_clock, work: default_work)

Source

# File lib/fart_cpu_ping.rb, line 13
def sample_ns(samples: DEFAULT_SAMPLES, clock: default_clock, work: default_work)
  deltas = Array.new(samples) do
    start = clock.call
    work.call
    finish = clock.call
    finish - start
  end
  deltas.min
end