[lttng-dev] Required Kernel

[lttng-dev] Required Kernel

[Ben_Day]

Could you please tell me what version of the kernel is required in order 
to do kernel tracing with LTTng 2.0 and CTF output?

I have not been able to find this information on the website or in any of 
the documentation.

Thanks!

Ben
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[lttng-dev] Required Kernel

[Yannick Brosseau]

The minimal version we've tested is 2.6.38.

You can find this information in the readme of the kernel modules:
http://git.lttng.org/?p=lttng-modules.git;a=blob;f=README

and on the download page.

On 2012-04-02 17:53, Ben_Day at selinc.com wrote:
> Could you please tell me what version of the kernel is required in
> order to do kernel tracing with LTTng 2.0 and CTF output?
>
> I have not been able to find this information on the website or in any
> of the documentation.
>
> Thanks!
>
> Ben
>
>
> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

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[lttng-dev] Required Kernel

[Mathieu Desnoyers]

We should probably put a kernel version compability matrix, with links
from the lttng 2.0 kernel tracer and download pages.

Thanks,

Mathieu

* Yannick Brosseau (yannick.brosseau at gmail.com) wrote:
> The minimal version we've tested is 2.6.38.
> 
> You can find this information in the readme of the kernel modules:
> http://git.lttng.org/?p=lttng-modules.git;a=blob;f=README
> 
> and on the download page.
> 
> On 2012-04-02 17:53, Ben_Day at selinc.com wrote:
> > Could you please tell me what version of the kernel is required in
> > order to do kernel tracing with LTTng 2.0 and CTF output?
> >
> > I have not been able to find this information on the website or in any
> > of the documentation.
> >
> > Thanks!
> >
> > Ben
> >
> >
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev at lists.lttng.org
> > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
> 

> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev


-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com

[lttng-dev] Required Kernel

[Yannick Brosseau]

Probablement simply add the requirement to the kernel tracer main page
(http://lttng.org/lttng-kernel-tracer) would be sufficient.

On 2012-04-03 08:59, Mathieu Desnoyers wrote:
> We should probably put a kernel version compability matrix, with links
> from the lttng 2.0 kernel tracer and download pages.
>
> Thanks,
>
> Mathieu
>
> * Yannick Brosseau (yannick.brosseau at gmail.com) wrote:
>> The minimal version we've tested is 2.6.38.
>>
>> You can find this information in the readme of the kernel modules:
>> http://git.lttng.org/?p=lttng-modules.git;a=blob;f=README
>>
>> and on the download page.
>>
>> On 2012-04-02 17:53, Ben_Day at selinc.com wrote:
>>> Could you please tell me what version of the kernel is required in
>>> order to do kernel tracing with LTTng 2.0 and CTF output?
>>>
>>> I have not been able to find this information on the website or in any
>>> of the documentation.
>>>
>>> Thanks!
>>>
>>> Ben
>>>
>>>
>>> _______________________________________________
>>> lttng-dev mailing list
>>> lttng-dev at lists.lttng.org
>>> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>> _______________________________________________
>> lttng-dev mailing list
>> lttng-dev at lists.lttng.org
>> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>

[lttng-dev] Required Kernel

[Alexandre Montplaisir]

On 12-04-03 08:59 AM, Mathieu Desnoyers wrote:
> We should probably put a kernel version compability matrix,

Oh god, please, no...
I'm still having nightmares from 
http://git.lttng.org/?p=lttv.git;a=blob_plain;f=doc/developer/lttng-lttv-compatibility.html;hb=HEAD

;)


Granted, the minimum requirement could be advertised a bit more
prominently (on the lttng2.0 page for example).

Also, I remember someone being able to run it on 2.6.35 by backporting 1
or 2 kernel patches. Perhaps it'd be worth re-testing and documenting
this procedure somewhere?


Cheers,

-- 
Alexandre Montplaisir
DORSAL lab,
?cole Polytechnique de Montr?al

[lttng-dev] Required Kernel

[Mathieu Desnoyers]

* Alexandre Montplaisir (alexandre.montplaisir at polymtl.ca) wrote:
> On 12-04-03 08:59 AM, Mathieu Desnoyers wrote:
> > We should probably put a kernel version compability matrix,
> 
> Oh god, please, no...
> I'm still having nightmares from 
> http://git.lttng.org/?p=lttv.git;a=blob_plain;f=doc/developer/lttng-lttv-compatibility.html;hb=HEAD
> 
> ;)
> 
> 
> Granted, the minimum requirement could be advertised a bit more
> prominently (on the lttng2.0 page for example).

OK.

> 
> Also, I remember someone being able to run it on 2.6.35 by backporting 1
> or 2 kernel patches. Perhaps it'd be worth re-testing and documenting
> this procedure somewhere?

Yes, Yannick probably still has the patches.

Thanks,

Mathieu

> 
> 
> Cheers,
> 
> -- 
> Alexandre Montplaisir
> DORSAL lab,
> ?cole Polytechnique de Montr?al
> 

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com

[lttng-dev] Required Kernel

[Yannick Brosseau]

On 2012-04-03 09:15, Alexandre Montplaisir wrote:
> Granted, the minimum requirement could be advertised a bit more
> prominently (on the lttng2.0 page for example). Also, I remember
> someone being able to run it on 2.6.35 by backporting 1 or 2 kernel
> patches. Perhaps it'd be worth re-testing and documenting this
> procedure somewhere? Cheers, 
Yes, that was me. Since my initial work on that was in september, it's
currently broken.
I need to adapt it to the syscalls and statedump additions.
More on that front soon I hope.

Yannick