Re: [Bsdrp-users] high WCPU in clean bsdrp

[Olivier Cochard-L. <ol...@co...>]

On Mon, Feb 15, 2021 at 7:14 AM Сучасні Системи Безпеки <gri...@gm...>
wrote:

>
>
> it is a clean server and its doing nothing right now
>
> why is so high % using  acpi_cpu_idle_mwait ?
>

If my understanding is correct: The idle process is a 'fake' process used
to count CPU time spent in idle mode (ie: doing nothing).
Here is an example from one of my server:

# top -b | head -n 7
last pid:  1733;  load averages:  0.00,  0.00,  0.00  up 15+00:38:42
 09:20:37
62 processes:  1 running, 58 sleeping, 3 zombie
CPU:  0.4% user,  0.0% nice,  0.1% system,  0.0% interrupt, 99.5% idle
Mem: 120M Active, 17G Inact, 95G Wired, 11G Free
ARC: 54G Total, 12G MFU, 40G MRU, 1312K Anon, 528M Header, 1720M Other
     49G Compressed, 112G Uncompressed, 2.29:1 Ratio
Swap: 100G Total, 100G Free

=> Notice the 99.5% idle showing my system is doing nothing.
And the same top command as your on this system:

# top -SHb | tail -n 20
  PID USERNAME    PRI NICE   SIZE    RES STATE    C   TIME    WCPU COMMAND
   11 root        155 ki31     0B   512K CPU16   16 358.9H 100.00%
idle{idle: cpu16}
   11 root        155 ki31     0B   512K CPU22   22 358.9H 100.00%
idle{idle: cpu22}
   11 root        155 ki31     0B   512K CPU1     1 358.9H 100.00%
idle{idle: cpu1}
   11 root        155 ki31     0B   512K CPU0     0 358.8H 100.00%
idle{idle: cpu0}
   11 root        155 ki31     0B   512K CPU26   26 358.8H 100.00%
idle{idle: cpu26}
   11 root        155 ki31     0B   512K CPU20   20 358.8H 100.00%
idle{idle: cpu20}
   11 root        155 ki31     0B   512K CPU18   18 358.8H 100.00%
idle{idle: cpu18}
   11 root        155 ki31     0B   512K CPU3     3 358.8H 100.00%
idle{idle: cpu3}
   11 root        155 ki31     0B   512K CPU24   24 358.8H 100.00%
idle{idle: cpu24}
   11 root        155 ki31     0B   512K CPU30   30 358.8H 100.00%
idle{idle: cpu30}
   11 root        155 ki31     0B   512K CPU7     7 358.8H 100.00%
idle{idle: cpu7}
   11 root        155 ki31     0B   512K CPU23   23 358.8H 100.00%
idle{idle: cpu23}
   11 root        155 ki31     0B   512K CPU28   28 358.8H 100.00%
idle{idle: cpu28}
   11 root        155 ki31     0B   512K CPU8     8 358.8H 100.00%
idle{idle: cpu8}
   11 root        155 ki31     0B   512K CPU11   11 358.8H 100.00%
idle{idle: cpu11}
   11 root        155 ki31     0B   512K CPU15   15 358.8H 100.00%
idle{idle: cpu15}
   11 root        155 ki31     0B   512K CPU5     5 358.8H 100.00%
idle{idle: cpu5}
   11 root        155 ki31     0B   512K CPU6     6 358.8H 100.00%
idle{idle: cpu6}

Do you have a too high CPU power consumption in this idle state ?

Regards,

Olivier