Class: LitmusPaper::Metric::CPULoad

Inherits:
Object
  • Object
show all
Defined in:
lib/litmus_paper/metric/cpu_load.rb

Instance Method Summary collapse

Constructor Details

#initialize(weight) ⇒ CPULoad

Returns a new instance of CPULoad.



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# File 'lib/litmus_paper/metric/cpu_load.rb', line 4

def initialize(weight)
  @weight = weight
end

Instance Method Details

#current_health ⇒ Object 



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# File 'lib/litmus_paper/metric/cpu_load.rb', line 8

def current_health
  [@weight - (@weight * load_average / processor_count), 1].max
end

#load_average ⇒ Object 



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# File 'lib/litmus_paper/metric/cpu_load.rb', line 23

def load_average
  File.read('/proc/loadavg').split(' ').first.to_f
end

#processor_count ⇒ Object 



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# File 'lib/litmus_paper/metric/cpu_load.rb', line 12

def processor_count
  @processor_count ||= File.readlines('/proc/cpuinfo').reduce(0) do |memo, line|
    if line =~ /^processor/
      memo + 1
    else
      memo
    end
  end

end

#stats ⇒ Object 



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# File 'lib/litmus_paper/metric/cpu_load.rb', line 27

def stats
  {
    :cpu_load_average => load_average,
  }
end

#to_s ⇒ Object 



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# File 'lib/litmus_paper/metric/cpu_load.rb', line 33

def to_s
  "Metric::CPULoad(#{@weight})"
end