Module: NewRelic::Agent::Instrumentation::DispatcherInstrumentation::BusyCalculator

Extended by:
BusyCalculator
Included in:
BusyCalculator
Defined in:
lib/new_relic/agent/instrumentation/dispatcher_instrumentation.rb

Overview

This won’t work with Rails 2.2 multi-threading

Instance Method Summary collapse

Instance Method Details

#dispatcher_finish(time) ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/dispatcher_instrumentation.rb', line 64

def dispatcher_finish(time)
  Thread.critical = true
  @accumulator += (time - @dispatcher_start)
  @dispatcher_start = nil
  
  Thread.critical = false
end

#dispatcher_start(time) ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/dispatcher_instrumentation.rb', line 58

def dispatcher_start(time)
  Thread.critical = true
  @dispatcher_start = time      
  Thread.critical = false
end

#harvest_busy ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/dispatcher_instrumentation.rb', line 76

def harvest_busy
  Thread.critical = true
  
  busy = @accumulator
  @accumulator = 0
  
  t0 = Time.now.to_f
  
  if @dispatcher_start
    busy += (t0 - @dispatcher_start)
    @dispatcher_start = t0
  end
  
  
  Thread.critical = false
  
  busy = 0.0 if busy < 0.0 # don't go below 0%
  
  time_window = (t0 - @harvest_start)
  time_window = 1.0 if time_window == 0.0  # protect against divide by zero
  
  busy = busy / time_window
  
  busy = 1.0 if busy > 1.0    # cap at 100%
  @instance_busy.record_data_point busy
  @harvest_start = t0
end

#is_busy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/new_relic/agent/instrumentation/dispatcher_instrumentation.rb', line 72

def is_busy?
  @dispatcher_start
end