Class: ScoutApm::SlowJobPolicy

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_apm/slow_job_policy.rb

Constant Summary collapse

DEFAULT_HISTOGRAM_SIZE = 
50
QUANTILE = 
95

Instance Method Summary collapse

Constructor Details

#initialize(histogram_size = DEFAULT_HISTOGRAM_SIZE) ⇒ SlowJobPolicy

Returns a new instance of SlowJobPolicy.



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# File 'lib/scout_apm/slow_job_policy.rb', line 15

def initialize(histogram_size = DEFAULT_HISTOGRAM_SIZE)
  @histograms = Hash.new { |h, k| h[k] = NumericHistogram.new(histogram_size) }
end

Instance Method Details

#slow?(worker, total_time) ⇒ Boolean

worker: just the worker class name. “PasswordResetJob” or similar total_time: runtime of the job in seconds returns true if this request should be stored in higher trace detail, false otherwise

Returns:

  • (Boolean) 


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# File 'lib/scout_apm/slow_job_policy.rb', line 22

def slow?(worker, total_time)
  @histograms[worker].add(total_time)
  return false if @histograms[worker].total == 1 # First call is never slow

  total_time >= @histograms[worker].quantile(QUANTILE)
end