[ltt-dev] Problem with tracing network events in 0.128 to 0.132

Gregory Haskins gregory.haskins at gmail.com
Tue Jun 16 15:15:42 EDT 2009


Pierre-Marc Fournier wrote:
> Mathieu Desnoyers wrote:
>   
>> * Pierre-Marc Fournier (pierre-marc.fournier at polymtl.ca) wrote:
>>     
>>> Gregory Haskins wrote:
>>>
>>>       
>>>> The RV view.  I noticed that if you get something like irq_entry(x)
>>>> irq_entry(y), irq_exit(y), irq_exit(x), its like the last event gets
>>>> lost and (I believe) x will stay "lit" forever in the RV window (tho it
>>>> could be y, will have to confirm).  Turning on lockdep makes that
>>>> nesting impossible and Ive noted that the issue seems to goes away in
>>>> this config.  Thus my theory about the nesting.  I can post a screen
>>>> shot if it will help.
>>>>
>>>>         
>>> Yes this is a known problem... I will try to get it fixed in the next days.
>>>
>>>       
>> Pierre-Marc : any progress on this issue ?
>>
>>     
>
> Sorry for the delay. Some fixes were committed to head. It should be
> better now.
>
> I think there are still a few cases where the bug occurs. I would be
> glad to check it out if someone would send me a problematic trace.
>
>   
Hi Pierre,
  I assume the fix is in lttv, right?  I currently have 0.12.14, which I
assume probably does not have the fix yet.  Should I assume 0.12.15 will
have the fix?  If so, I will keep and eye out for it and test when its
available.

Thanks guys!
-Greg

> Thanks
>
> pmf
>
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