39

See the example below. Automount is showing 3019:57 in the TIME+ column.

Tasks: 241 total,   1 running, 240 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  0.7%sy,  0.0%ni, 98.5%id,  0.0%wa,  0.1%hi,  0.0%si,  0.0%st
Mem:  16435884k total, 15007668k used,  1428216k free,   454300k buffers
Swap: 33554424k total,      140k used, 33554284k free,  1915400k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
**27026 root      15   0  974m  12m 1616 S  3.3  0.1   3019:57 automount**
 4619 root      15   0  245m  24m 9444 S  2.0  0.1   3491:25 java
20515 root      15   0 15720 1532 1124 R  0.7  0.0   0:00.03 top
    1 root      15   0 10372  644  548 S  0.0  0.0   0:04.87 init
    2 root      RT  -5     0    0    0 S  0.0  0.0   2:49.80 migration/0
    3 root      34  19     0    0    0 S  0.0  0.0   1:20.90 ksoftirqd/0
    4 root      RT  -5     0    0    0 S  0.0  0.0   0:00.00 watchdog/0
    5 root      RT  -5     0    0    0 S  0.0  0.0   3:53.73 migration/1
    6 root      34  19     0    0    0 S  0.0  0.0   0:34.51 ksoftirqd/1

Does it mean it has spent an accumulated 3019 hours of CPU time?

Matthias Braun
  • 1,518
June Bug
  • 391

3 Answers3

29

Haven't looked at the source code of top, but it seems like 3019:57 in column TIME+ means 3019 minutes 57 seconds of accumulated CPU time.

  • 999:00.00 means 999 minutes
  • 1000:00 means a thousand minutes (no . separator at all)

I confirmed it on my system. I took an example process from top with 2529:38 then checked it with ps -fp PID which showed 1-18:09:38. The latter is one day and eighteen hours, which is approximately two and a half thousand minutes, so they seem to be in agreement.

kubanczyk
  • 1,447
5

I find the meaning of TIME+ through the man top command. It said the following in the 3. FIELDS / Columns chapter:

 29. TIME  --  CPU Time
     Total CPU time the task has used since it started.  When Cumulative mode is On,  each  process  is  listed
     with  the cpu time that it and its dead children have used.  You toggle Cumulative mode with `S', which is
     both a command-line option and an interactive command.  See the `S'  interactive  command  for  additional
     information regarding this mode.

    

  1. TIME+  --  CPU Time, hundredths
The same as TIME, but reflecting more granularity through hundredths of a second.
    2.

When I let top display both the TIME+ and TIME fields, I find the details as follows:

TIME+ TIME
5432:01 means "5432 minutes and 1 second" 90,32 means "90 hours and 32 minutes" (that is "5432 minutes")
25:15.20 means "25 minutes, 15 seconds and 20% of 1 second" 25:15 means "25 minutes and 15 seconds"
Charles Z
  • 51
0

the TIME+ column in TOP command, is not in minutes, is in hundredths of a second. source: https://www.maketecheasier.com/linux-top-explained/

greetings

mcfee
  • 25