Анализ bootchart

The fifth field (fs_freq).
              This  field  is  used  for these filesystems by the dump(8) command to determine which filesystems need to be dumped.  If the
              fifth field is not present, a value of zero is returned and dump will assume that the filesystem does not need to be dumped.

The sixth field (fs_passno).
              This field is used by the fsck(8) program to determine the order in which filesystem checks are done  at  reboot  time.   The
              root  filesystem  should be specified with a fs_passno of 1, and other filesystems should have a fs_passno of 2.  Filesystems
              within a drive will be checked sequentially, but filesystems on different drives will be checked at the same time to  utilize
              parallelism  available in the hardware.  If the sixth field is not present or zero, a value of zero is returned and fsck will
              assume that the filesystem does not need to be checked.