/sys/kernel/debug/xfs/sda4/timestats//blocked::ilock :
count: 131471111262
                       since mount        recent
duration of events
  min:                           50 ns
  max:                         1621 ms
  total:                         13 h
  mean:                         372 ns      86 ns
  stddev:                       160 us      50 ns
time between events
  min:                           10 ns
  max:                          999 ms
  mean:                         656 ns    1641 ns
  stddev:                        11 us    1871 ns