Class: HttpLoader::Harness::ResourceMonitor

Inherits:
Object
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/http_loader/harness/resource_monitor.rb

Overview

Monitors CPU, memory, and established connections for running processes.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ResourceMonitor

Returns a new instance of ResourceMonitor.



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# File 'lib/http_loader/harness/resource_monitor.rb', line 14

def initialize
  @cpu_prev = T.let({}, T::Hash[Integer, T::Hash[Symbol, T.untyped]])
end

Instance Method Details

#count_established_connections(pid) ⇒ Object 



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# File 'lib/http_loader/harness/resource_monitor.rb', line 32

def count_established_connections(pid)
  return 0 if pid.nil?

  if File.directory?("/proc/#{pid}/fd")
    count_linux_connections(pid)
  else
    count_lsof_connections(pid)
  end
rescue StandardError
  0
end

#process_stats(pid) ⇒ Object 



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# File 'lib/http_loader/harness/resource_monitor.rb', line 19

def process_stats(pid)
  return ['EXTERNAL', 'EXTERNAL', 0.0, 0] if pid.nil?

  if File.exist?("/proc/#{pid}/stat") && File.exist?("/proc/#{pid}/statm")
    native_linux_stats(pid)
  else
    fallback_ps_stats(pid)
  end
rescue StandardError
  fallback_ps_stats(pid)
end