gistfile1.rb

#!/usr/bin/env ruby

def running?(pid)
  begin
    return Process.getpgid(pid) != -1
  rescue Errno::ESRCH
    return false
  end
end

processes = `ps aax --sort cp -o pid,pcpu,time,cmd | grep [R]ails`

processes.each do |process|
  process.strip!
  pid, pcpu, time, cmd = process.split(/\s+/)
  hh, mm, ss = time.split(':')
  next if mm.to_i < 20
  puts "Rogue: #{pid} uses #{pcpu}% cpu, alive for #{time}"
  Process.kill('SIGUSR1', pid.to_i)
  sleep 20
  if running?(pid.to_i)
    puts "Process is still running, sending term signal"
    Process.kill("KILL", pid.to_i)
  end
end