JezK
Edit File: cpu_counter.rb
module Celluloid module CPUCounter class << self def cores @cores ||= count_cores end private def count_cores result = from_env || from_sysdev || from_sysctl Integer(result.to_s[/\d+/], 10) if result end def from_env result = ENV['NUMBER_OF_PROCESSORS'] result if result end def from_sysdev ::IO.read('/sys/devices/system/cpu/present').split('-').last.to_i + 1 rescue Errno::ENOENT result = Dir['/sys/devices/system/cpu/cpu*'].count { |n| n =~ /cpu\d+/ } result unless result.zero? end def from_sysctl result = `sysctl -n hw.ncpu` result if $?.success? rescue Errno::ENOENT end end end end