linux - top 命令显示的时间不准确

Question

我的机器只启动了大约 10 分钟。但是 top 命令显示以下不准确的 TIME

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND 5721 root      20   0 15424 1588  840 R  1.9  0.0   0:00.02 top    1 root      20   0 19360 1532 1224 S  0.0  0.0  4727184h init    2 root      20   0     0    0    0 S  0.0  0.0  4723057h kthreadd    3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0    4 root      20   0     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0    5 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0    6 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 watchdog/0    7 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/1    8 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/1    9 root      20   0     0    0    0 S  0.0  0.0 300194:20 ksoftirqd/1   10 root      RT   0     0    0    0 S  0.0  0.0 300194:20 watchdog/1   11 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/2   12 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/2   13 root      20   0     0    0    0 S  0.0  0.0   0:00.05 ksoftirqd/2   14 root      RT   0     0    0    0 S  0.0  0.0 300194:20 watchdog/2   15 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/3   16 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/3   17 root      20   0     0    0    0 S  0.0  0.0   0:00.05 ksoftirqd/3   18 root      RT   0     0    0    0 S  0.0  0.0 300194:20 watchdog/3   19 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/4   20 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/4   21 root      20   0     0    0    0 S  0.0  0.0   0:00.05 ksoftirqd/4

# ps p 1 uUSER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMANDroot         1 205788576  0.0 19360 1532 ?     Ss   13:22 68882688:50 /sbin/init# uptime 13:35:17 up 8 min,  1 user,  load average: 0.00, 0.00, 0.00#

谁能告诉我是什么导致了这个巨大的 TIME+ 数字吗？这是/proc/1/stat

# cat /proc/1/stat1 (init) S 0 1 1 0 -1 4202752 2693 1076732 9 366 35687438872 1666098882994 1074795224736 1071709728674 20 0 1 0 3 19824640 383 18446744073709551615 139708515631104 139708515771252 140737139200704 140737139199784 139708497335507 0 0 4096 536962595 18446744071580512361 0 0 0 12 0 0 11 0 0#

谢谢你，

Answer 1

TIME+ 是显示的累计时间。它是任务自启动以来使用的总 CPU 时间。要查找进程的实际运行情况，您可以使用 ps 命令。