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

[Сучасні С. Б. <gri...@gm...>]

i understand about idle process

but why is pmcstat -TS inst_retired.any_p -w1
showing

PMC: [inst_retired.any_p] Samples: 220 (100.0%) , 36 unresolved

%SAMP IMAGE      FUNCTION                       CALLERS

------>>>>>>> 67.4 kernel     acpi_cpu_idle_mwait            acpi_cpu_idle

could you please run pmcstat on your server and see the output ? is where
also a high % the kernel using ?

On Mon, Feb 15, 2021 at 11:29 AM Olivier Cochard-Labbé <ol...@co...>
wrote:

> 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
> _______________________________________________
> Bsdrp-users mailing list
> Bsd...@li...
> https://lists.sourceforge.net/lists/listinfo/bsdrp-users
>


-- 
"Cучасні Системи Безпеки"
http://www.itlogix.com.ua
+38 (050) 523-66-17
+38 (067) 523-66-17