docs: def parse_vmstat(text):
      ''' Parse vmstat output. '''
      lines = text.splitlines()
      results = Info()  # TODO use MemInfo
  
      try:
          PAGESIZE = int(lines[0].split()[-2])
      except IndexError:
          PAGESIZE = 4096
  
      for line in lines[1:]:      # dump header
          if not line[0] == 80:   # b'P' startswith Page...
              break
          tokens = line.split()
          name, value = tokens[1][:-1].decode('ascii'), tokens[-1][:-1]
          results[name] = int(value) * PAGESIZE
  
      return results