Class: Steep::Sampler

Inherits:
Object show all
Defined in:
lib/steep.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Sampler

Returns a new instance of Sampler.



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# File 'lib/steep.rb', line 251

def initialize()
  @samples = []
end

Instance Method Details

#average ⇒ Object 



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# File 'lib/steep.rb', line 277

def average
  if count > 0
    total/count
  else
    0.to_f
  end
end

#count ⇒ Object 



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# File 'lib/steep.rb', line 265

def count
  @samples.count
end

#percentile(p) ⇒ Object 



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# File 'lib/steep.rb', line 285

def percentile(p)
  c = [count * p / 100.to_r, 1].max or raise
  slowests(c.to_i).last&.last || 0.to_f
end

#sample(message) ⇒ Object 



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# File 'lib/steep.rb', line 255

def sample(message)
  start = Time.now
  begin
    yield
  ensure
    time = Time.now - start
    @samples << [message, time]
  end
end

#slowests(num) ⇒ Object 



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# File 'lib/steep.rb', line 273

def slowests(num)
  @samples.sort_by(&:last).reverse.take(num)
end

#total ⇒ Object 



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# File 'lib/steep.rb', line 269

def total
  @samples.sum(&:last)
end