Class: ScoutApm::Instruments::Process::ProcessMemory

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_apm/instruments/process/process_memory.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(logger) ⇒ ProcessMemory

Returns a new instance of ProcessMemory.



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 20

def initialize(logger)
  @logger = logger
end

Instance Attribute Details

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 5

def logger
  @logger
end

Class Method Details

.rss ⇒ Object 



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 12

def self.rss
  ::Process.rusage.maxrss
end

.rss_in_mb ⇒ Object 



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 16

def self.rss_in_mb
  rss_to_mb(rss)
end

.rss_to_mb(rss) ⇒ Object

Account for Darwin returning maxrss in bytes and Linux in KB. Used by the slow converters. Doesn’t feel like this should go here though…more of a utility.



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 8

def self.rss_to_mb(rss)
  rss.to_f/1024/(ScoutApm::Agent.instance.environment.os == 'darwin' ? 1024 : 1)
end

Instance Method Details

#human_name ⇒ Object 



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 32

def human_name
  "Process Memory"
end

#metric_name ⇒ Object 



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 28

def metric_name
  "Physical"
end

#metric_type ⇒ Object 



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 24

def metric_type
  "Memory"
end

#metrics(timestamp, store) ⇒ Object 



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 36

def metrics(timestamp, store)
  result = run
  if result
    meta = MetricMeta.new("#{metric_type}/#{metric_name}")
    stat = MetricStats.new(false)
    stat.update!(result)
    store.track!({ meta => stat }, :timestamp => timestamp)
  else
    {}
  end
end

#run ⇒ Object 



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# File 'lib/scout_apm/instruments/process/process_memory.rb', line 48

def run
  self.class.rss_in_mb.tap { |res| logger.debug "#{human_name}: #{res.inspect}" }
end