Re: Rtai Digest, Vol 99, Issue 6

You're right, number of CPU depends on the number of physical of your CPU.
In that config I setted 2 because it was for my laptop.

Il giorno lun 7 mar 2016 alle ore 09:15 Rathin Dholakia <
[email protected]> ha scritto:

> Dear Francescodario,
>
> I am trying out that method, kernel is compiling will update you. but
> before going ahead I just wanted to ask that after disabling my Hiper
> threading- my "getconf _NPROCESSORS_ONLN" shows only 2 CPUs!
> where as i3 is supposed to have 4 cpus, correct?
>
> So, what CPU count should I use in config? 4 or 2?
>
> Currently I am going ahead with 4!
>
> Regards,
> Rathin
>
> On Sun, Mar 6, 2016 at 5:09 PM, Francescodario Cuzzocrea <
> [email protected]> wrote:
>
>> Hi Rathin,
>>
>> I had the exact same problem with my two i7.
>>
>> Can you try this kernel configuration ? http://pastebin.com/tzcuaadU
>>
>>  Also, have you disabled HyperThreading and SpeedStep from BIOS ?
>>
>> Also, try to run the test on a tty2 console (ctrl+alt+f2, then to return
>> to x ctrl+alt+f1).
>>
>>
>> Il giorno sab 5 mar 2016 alle ore 16:32 <[email protected]> ha
>> scritto:
>>
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>>> Today's Topics:
>>>
>>>    1. Re: Rtai Digest, Vol 99, Issue 1 (Rathin Dholakia)
>>>
>>>
>>> ----------------------------------------------------------------------
>>>
>>> Message: 1
>>> Date: Sat, 5 Mar 2016 21:02:12 +0530
>>> From: Rathin Dholakia <[email protected]>
>>> To: Francescodario Cuzzocrea <[email protected]>
>>> Cc: [email protected]
>>> Subject: Re: [Rtai] Rtai Digest, Vol 99, Issue 1
>>> Message-ID:
>>>         <CAJW6HtSm26Sx3VUb7jb5UiecDN0sMqYJ=
>>> [email protected]>
>>> Content-Type: text/plain; charset="utf-8"
>>>
>>> Dear Francescodario,
>>>
>>> This thread seems to be dead yet I faced the same issue so I thought of
>>> sharing my information.
>>>
>>> Herewith attaching my kernel config & RTAI config file.
>>>
>>> My observation:
>>> System specifically hangs when we fiddle around preemption or threading.
>>> 1) if you run latency/preemption test it will hang
>>>    Modules loaded at the time (rtai_sched, rtai_hal, rtai_sem, rtai_mq,
>>> rtai_msg,rtai_shm,rtai_fifos, rtai_bits, rtai_mbx)
>>>
>>> I tried different combination of modules yet it hangs
>>>
>>> 2) simply load preemption_rt.ko or kthread.ko module and system will hang
>>> immediately.(in my case at least)
>>>
>>> This problem occurs specifically in latest version of RTAI ( I am using
>>> ShabbyX -- i.e. RTAI 5.1 I guess).
>>>
>>> Currently by using RTAI 4.1 this issue can be averted ( with NewLib ).
>>>
>>> Hope this helps debug the issue.
>>>
>>> Sincerely,
>>> Rathin
>>>
>>>
>>> On Tue, Mar 1, 2016 at 9:18 PM, Francescodario Cuzzocrea <
>>> [email protected]> wrote:
>>>
>>> > Hi Artyon,
>>> >
>>> > first, in order to get some help you should attach at least you kernel
>>> > (the .config file inside the kernel sources folder) and rtai
>>> configuration
>>> > (the .rtai-config file inside the rtai source folder), so we can see
>>> if is
>>> > ok.
>>> >
>>> > Il giorno mar 1 mar 2016 alle ore 12:00 <[email protected]> ha
>>> > scritto:
>>> >
>>> >> Send Rtai mailing list submissions to
>>> >>         [email protected]
>>> >>
>>> >> To subscribe or unsubscribe via the World Wide Web, visit
>>> >>         https://mail.rtai.org/cgi-bin/mailman/listinfo/rtai
>>> >> or, via email, send a message with subject or body 'help' to
>>> >>         [email protected]
>>> >>
>>> >> You can reach the person managing the list at
>>> >>         [email protected]
>>> >>
>>> >> When replying, please edit your Subject line so it is more specific
>>> >> than "Re: Contents of Rtai digest..."
>>> >>
>>> >>
>>> >> Today's Topics:
>>> >>
>>> >>    1. Latency test hangs system (Artyom Lobach)
>>> >>
>>> >>
>>> >> ----------------------------------------------------------------------
>>> >>
>>> >> Message: 1
>>> >> Date: Tue, 1 Mar 2016 10:42:31 +0300
>>> >> From: Artyom Lobach <[email protected]>
>>> >> To: [email protected]
>>> >> Subject: [Rtai] Latency test hangs system
>>> >> Message-ID:
>>> >>         <CAFYUkWvoqWy_kcpA4t+1ySSFyOPnYCiQ4D8g3=
>>> >> [email protected]>
>>> >> Content-Type: text/plain; charset="utf-8"
>>> >>
>>> >> Hi! I installed RTAI v4.1 with linux kernel v3.10.32 on Ubuntu 14.04
>>> >> according this instruction (related to i386 arch):
>>> >> https://gist.github.com/gaoyifan/c881aa36cd02fb5c1c20.
>>> >> At the end of installation I tried kern/latency test, but it hangs
>>> system
>>> >> with no errors in console and kern.log file. only one warning:
>>> >> *"Error opening /proc/rtai/latency_calibrate*
>>> >> *Couldn't get infos about the module's state" - *an empty latency
>>> table
>>> >> below and no reaction.
>>> >> That happens with different components (i tried with different
>>> kernels and
>>> >> rtai versions during last 2 weeks).
>>> >> I think the kernel or rtai configuration for my machine is wrong, but
>>> in
>>> >> what way should i correct it?
>>> >>
>>> >> Thakns in advance!
>>> >>
>>> >> Best Regards
>>> >> Artyom
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>>>
>>> --
>>> Rathin A. Dholakia
>>> "Dont GO through life, GROW through life"
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>>
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>
>
>
> --
> Rathin A. Dholakia
> "Dont GO through life, GROW through life"
>

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