/proc/PID/sched 測量單位

/proc/<PID>/sched有誰知道Linux中文件中的度量單位是什麼？

cat /proc/1277/sched
flush-202:32 (1277, #threads: 1)
---------------------------------------------------------
se.exec_start                      :    7969759448.265086
se.vruntime                        :     282810360.009524
se.sum_exec_runtime                :        121710.613450
se.statistics.wait_start           :             0.000000
se.statistics.sleep_start          :    7969759448.265086
se.statistics.block_start          :             0.000000
se.statistics.sleep_max            :          5005.885001
se.statistics.block_max            :          9270.821298
se.statistics.exec_max             :             3.988085
se.statistics.slice_max            :            12.407345
se.statistics.wait_max             :            12.008414
se.statistics.wait_sum             :         11067.153244
se.statistics.wait_count           :              1611854
se.statistics.iowait_sum           :         12593.039209
se.statistics.iowait_count         :                    2
se.nr_migrations                   :                17755
se.statistics.nr_migrations_cold   :                    0
se.statistics.nr_failed_migrations_affine:                    0
se.statistics.nr_failed_migrations_running:                58593
se.statistics.nr_failed_migrations_hot:                    2
se.statistics.nr_forced_migrations :                    0
se.statistics.nr_wakeups           :              1593915
se.statistics.nr_wakeups_sync      :                    0
se.statistics.nr_wakeups_migrate   :                    0
se.statistics.nr_wakeups_local     :              1593912
se.statistics.nr_wakeups_remote    :                    3
se.statistics.nr_wakeups_affine    :                    0
se.statistics.nr_wakeups_affine_attempts:                    3
se.statistics.nr_wakeups_passive   :                    0
se.statistics.nr_wakeups_idle      :                    0
avg_atom                           :             0.076350
avg_per_cpu                        :             6.855004
nr_switches                        :              1594100
nr_voluntary_switches              :              1593916
nr_involuntary_switches            :                  184
se.load.weight                     :                 1024
policy                             :                    0
prio                               :                  120
clock-delta                        :                  129

雖然計數幾乎是不言自明的，但時間卻不是。是秒、毫秒還是微秒？我特別感興趣

se.statistics.iowait_sum           :         12593.039209

謝謝！

這些值以毫秒為單位顯示；它們在納秒內被跟踪，並按一百萬縮放（請參閱 參考資料kernel/sched/debug.c）。所以

se.statistics.iowait_sum           :         12593.039209

意味著程序在 I/O 等待中花費了超過 12.5 秒。

引用自：https://unix.stackexchange.com/questions/463895