class ElasticAPM::Metrics::CpuMemSet::Linux

def sample
  proc_stat = ProcStat.new.read!
  proc_self_stat = ProcSelfStat.new.read!
  meminfo = Meminfo.new.read!
  Sample.new(
    system_cpu_total: proc_stat.total,
    system_cpu_usage: proc_stat.usage,
    system_memory_total: meminfo.total,
    system_memory_free: meminfo.available,
    process_cpu_usage: proc_self_stat.total,
    process_memory_size: proc_self_stat.vsize,
    process_memory_rss: proc_self_stat.rss,
    page_size: meminfo.page_size
  )
end