Module: Perfgate::Instrumentation::Duration

Defined in:
lib/perfgate/instrumentation/duration.rb

Overview

Wall-clock duration of a Perfgate.measure block (spec section 13.1). Uses a monotonic clock so NTP adjustments and system clock changes never produce a negative or inflated reading.

Class Method Summary collapse

Class Method Details

.finish(started_at) ⇒ Object 



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# File 'lib/perfgate/instrumentation/duration.rb', line 15

def finish(started_at)
  { "duration_ns" => ((Process.clock_gettime(Process::CLOCK_MONOTONIC) - started_at) * 1_000_000_000).round }
end

.start ⇒ Object 



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# File 'lib/perfgate/instrumentation/duration.rb', line 11

def start
  Process.clock_gettime(Process::CLOCK_MONOTONIC)
end