Class: Kronk::Player::Benchmark::ResultSet

Inherits:
Object
  • Object
show all
Defined in:
lib/kronk/player/benchmark.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ResultSet

Returns a new instance of ResultSet.



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# File 'lib/kronk/player/benchmark.rb', line 25

def initialize
  @times     = Hash.new(0)
  @count     = 0
  @r5XX      = 0
  @r4XX      = 0
  @r3XX      = 0
  @err_count = 0

  @precision = 3

  @slowest = nil
  @fastest = nil

  @paths = {}

  @total_bytes = 0
  @byterate    = 0

  @total_time = 0
end

Instance Attribute Details

#byterate ⇒ Object (readonly)

Returns the value of attribute byterate.



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# File 'lib/kronk/player/benchmark.rb', line 22

def byterate
  @byterate
end

#count ⇒ Object (readonly)

Returns the value of attribute count.



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# File 'lib/kronk/player/benchmark.rb', line 22

def count
  @count
end

#err_count ⇒ Object

Returns the value of attribute err_count.



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# File 'lib/kronk/player/benchmark.rb', line 20

def err_count
  @err_count
end

#fastest ⇒ Object (readonly)

Returns the value of attribute fastest.



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# File 'lib/kronk/player/benchmark.rb', line 22

def fastest
  @fastest
end

#precision ⇒ Object (readonly)

Returns the value of attribute precision.



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# File 'lib/kronk/player/benchmark.rb', line 22

def precision
  @precision
end

#slowest ⇒ Object (readonly)

Returns the value of attribute slowest.



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# File 'lib/kronk/player/benchmark.rb', line 22

def slowest
  @slowest
end

#total_bytes ⇒ Object (readonly)

Returns the value of attribute total_bytes.



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# File 'lib/kronk/player/benchmark.rb', line 22

def total_bytes
  @total_bytes
end

#total_time ⇒ Object

Returns the value of attribute total_time.



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# File 'lib/kronk/player/benchmark.rb', line 20

def total_time
  @total_time
end

Instance Method Details

#add_result(resp) ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 47

def add_result resp
  time = (resp.time * 1000).round

  @times[time] += 1
  @count += 1

  case resp.code[0, 1]
  when "5" then @r5XX += 1
  when "4" then @r4XX += 1
  when "3" then @r3XX += 1
  end

  @slowest = time if !@slowest || @slowest < time
  @fastest = time if !@fastest || @fastest > time

  log_req resp.request, time if resp.request

  @total_bytes += resp.total_bytes

  @byterate = (@byterate * (@count-1) + resp.byterate) / @count
end

#clear_caches ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 156

def clear_caches
  @percentages  = nil
  @slowest_reqs = nil
  @sum          = nil
  @mean         = nil
  @median       = nil
  @deviation    = nil
end

#deviation ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 83

def deviation
  return 0 if @count == 0
  return @deviation if @deviation

  mdiff = @times.to_a.inject(0) do |sum, (time, count)|
            sum + ((time-self.mean)**2) * count
          end

  @deviation = ((mdiff / @count)**0.5).round @precision
end

#log_req(req, time) ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 70

def log_req req, time
  uri = req.uri.dup
  uri.query = nil
  uri = "#{req.http_method} #{uri.to_s}"

  @paths[uri] ||= [0, 0]
  pcount = @paths[uri][1] + 1
  @paths[uri][0] = (@paths[uri][0] * @paths[uri][1] + time) / pcount
  @paths[uri][0] = @paths[uri][0].round @precision
  @paths[uri][1] = pcount
end

#mean ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 95

def mean
  return 0 if @count == 0
  @mean ||= (self.sum / @count).round @precision
end

#median ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 101

def median
  return 0 if @count == 0
  @median ||= ((@slowest + @fastest) / 2).round @precision
end

#percentages ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 107

def percentages
  return @percentages if @percentages

  @percentages = {}

  perc_list   = [50, 66, 75, 80, 90, 95, 98, 99]
  times_count = 0
  target_perc = perc_list.first

  i = 0
  @times.keys.sort.each do |time|
    times_count += @times[time]

    if target_perc <= (100 * times_count / @count)
      @percentages[target_perc] = time
      i += 1
      target_perc = perc_list[i]

      break unless target_perc
    end
  end

  perc_list.each{|l| @percentages[l] ||= self.slowest }
  @percentages[100] = self.slowest
  @percentages
end

#req_per_sec ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 135

def req_per_sec
  return 0 if @count == 0
  (@count / @total_time).round @precision
end

#slowest_reqs ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 151

def slowest_reqs
  @slowest_reqs ||= @paths.to_a.sort{|x,y| y[1] <=> x[1]}[0..9]
end

#sum ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 146

def sum
  @sum ||= @times.inject(0){|sum, (time,count)| sum + time * count}
end

#to_s ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 166

def to_s
  clear_caches

  out = <<-STR

Completed:     #{@count}
300s:          #{@r3XX}
400s:          #{@r4XX}
500s:          #{@r5XX}
Errors:        #{@err_count}
Req/Sec:       #{self.req_per_sec}
Total Bytes:   #{@total_bytes}
Transfer Rate: #{self.transfer_rate} Kbytes/sec

Connection Times (ms)
  Min:       #{self.fastest || 0}
  Mean:      #{self.mean}
  [+/-sd]:   #{self.deviation}
  Median:    #{self.median}
  Max:       #{self.slowest || 0}

Request Percentages (ms)
   50%    #{self.percentages[50]}
   66%    #{self.percentages[66]}
   75%    #{self.percentages[75]}
   80%    #{self.percentages[80]}
   90%    #{self.percentages[90]}
   95%    #{self.percentages[95]}
   98%    #{self.percentages[98]}
   99%    #{self.percentages[99]}
  100%    #{self.percentages[100]} (longest request)
  STR

  unless slowest_reqs.empty?
    out << "
Avg. Slowest Requests (ms, count)
#{slowest_reqs.map{|arr| "  #{arr[1].inspect}  #{arr[0]}"}.join "\n" }"
  end

  out
end

#transfer_rate ⇒ Object 



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# File 'lib/kronk/player/benchmark.rb', line 141

def transfer_rate
  ((@total_bytes / 1000) / @total_time).round @precision
end