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

[Douglas F. <fis...@gm...>]

I really don't know very much about FreeBSD.
But old servers platforms (release date before 2015) with Linux or even
with Windows is a pain in the a** whe talking about high performance
between the buses.

HP Gen7, Dell 410/x10, are from 2009 and 2010...

Most of the improvement techniques on North-South bridge communications on
those platforms don't work very well.
I had bad experiences with them. RDMA, RoCE, or even DPDK(first releases)
didn't really bypass the north-south controller.
So, the processes got piped until each one "went downstairs", do the job
and come back saying "it's done".

Adjust CPU affinity with that was like fighting against cancer.
Every week/month you need to review everything to be sure that still was in
remission.

I also don't know very well about HP Gen8, but I would recommend you to
check for that.

Talking about Dell, using R230/Rx30 and younger with newer NICs... This is
a paradise!
Even on virtualized environments using SR-IOV.



Em sex., 19 de fev. de 2021 às 03:00, Сучасні Системи Безпеки <
gri...@gm...> escreveu:

> i continue digging in this
>
> i turned on C states in bios (the was OFF)
>
> now the pmcstat shows:
>
> %SAMP IMAGE      FUNCTION                       CALLERS
>  41.9 kernel     acpi_cpu_idle_mwait            acpi_cpu_idle
>  38.6 kernel     lock_delay                     _mtx_lock_spin_cookie
>
> the acpi_cpu_idle wen from 70 to 40% but ther is a new process -
> lock_delay %(
>
> i trying to run lockstat -x aggsize=4m sleep 10 > lock-type.txt
> but it's not starting
>
> lockstat: failed to compile program: "/usr/lib/dtrace/ip.d", line 125:
> failed to copy type of 'ipv6_hdr': Conflicting type is already defined
>
> what's wrong with by HP gen8 ?
>
> On Thu, Feb 18, 2021 at 9:20 AM Сучасні Системи Безпеки <
> gri...@gm...> wrote:
>
>> installed a clean freebsd release 12.2 - the same situation
>>
>> please advise us how to tune this system to avoid such high % of kernel
>>
>> On Thu, Feb 18, 2021 at 7:47 AM Сучасні Системи Безпеки <
>> gri...@gm...> wrote:
>>
>>> the same situation (high acpi_cpu_idle_mwait) with clean BSDRP 1.97
>>> also..
>>> i have tried to change power settings in bios but with no luck..
>>>
>>> On Wed, Feb 17, 2021 at 11:39 PM Сучасні Системи Безпеки <
>>> gri...@gm...> wrote:
>>>
>>>> no - it's a clean install without anything.
>>>> please help us configure this router... What can we do with this ?
>>>>
>>>> On Wed, Feb 17, 2021 at 11:29 PM Olivier Cochard-Labbé <
>>>> ol...@co...> wrote:
>>>>
>>>>> On Mon, Feb 15, 2021 at 11:00 AM Сучасні Системи Безпеки <
>>>>> gri...@gm...> wrote:
>>>>>
>>>>>> 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 ?
>>>>>>
>>>>>>
>>>>> No indeed I don't have this acpi_cpu_idle_mwait function on the top:
>>>>>
>>>>> PMC: [inst_retired.any_p] Samples: 156 (100.0%) , 44 unresolved
>>>>>
>>>>> %SAMP IMAGE      FUNCTION                       CALLERS
>>>>>  32.1 kernel     cpu_search_highest
>>>>> cpu_search_highest:28.6 sched_switch:2.7 sched_idletd:0.9
>>>>>   4.5 kernel     cpu_search_lowest              cpu_search_lowest:3.6
>>>>> sched_pickcpu:0.9
>>>>>   2.7 libncurses start_color_sp                 wbkgrnd
>>>>>   1.8 kernel     sched_switch                   mi_switch
>>>>>
>>>>> Did you customize your performance_cx_lowest rc.conf ?
>>>>> 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
>>>>
>>>
>>>
>>> --
>>> "Cучасні Системи Безпеки"
>>> http://www.itlogix.com.ua
>>> +38 (050) 523-66-17
>>> +38 (067) 523-66-17
>>>
>>
>>
>> --
>> "Cучасні Системи Безпеки"
>> http://www.itlogix.com.ua
>> +38 (050) 523-66-17
>> +38 (067) 523-66-17
>>
>
>
> --
> "Cучасні Системи Безпеки"
> http://www.itlogix.com.ua
> +38 (050) 523-66-17
> +38 (067) 523-66-17
> _______________________________________________
> Bsdrp-users mailing list
> Bsd...@li...
> https://lists.sourceforge.net/lists/listinfo/bsdrp-users
>


-- 
Douglas Fernando Fischer
Engº de Controle e Automação