[erlang-questions] Investigate an infinite loop on production servers

[Morgan Segalis]

Yeah that what I'm doing right now, but of course, when I'm monitoring it, it won't crash, only when I sleep !!

I get back to the Erlang list as soon as I have more informations about this.

Thank you all !

Morgan.

Le 23 mai 2013 à 16:30, Vance Shipley <vances@REDACTED> a écrit :

> Keep etop running and capture the output to a file (e.g. etop ... | tee stop.log). After it gets into trouble look back and see what was happening beforehand.
> On May 23, 2013 6:16 PM, "Morgan Segalis" <msegalis@REDACTED> wrote:
> So I should go back to R15B ?
> 
> erlang:memory() gives me 
> 
> [{total,1525779584},
>  {processes,1272881427},
>  {processes_used,1272789743},
>  {system,252898157},
>  {atom,372217},
>  {atom_used,346096},
>  {binary,148093608},
>  {code,8274446},
>  {ets,1546832}]
> 
> 
> But keep in mind that right now, there is no infinite loop, or memory issue at this exact time…
> It will be more interesting to have that when the VM is asking for 14GB of memory, but when it does, the console is unresponsive, so I can't get anything then.
> 
> Le 23 mai 2013 à 14:39, Dmitry Kolesnikov <dmkolesnikov@REDACTED> a écrit :
> 
>> Right, you do not have many processes. Same time you goes out of memory…
>> 
>> Unfortunately, I had no time play around with R16B at production… 
>> Could it be some issue with SSL, I re-call there was some complains in the list? 
>> 
>> I would use entop to spot the process that has either too much reductions, queue len or heap.
>> Once you know they pid you can dig more info about them using erlang:process_info(…) and/or sys:get:status(…)
>> 
>> BTW, What erlang:memory() says on you production node?
>> 
>> - Dmitry
>> 
>> On May 23, 2013, at 3:25 PM, Morgan Segalis <msegalis@REDACTED> wrote:
>> 
>>> No, I was talking about the function I made to investigate which processes I have created, which gives me this output : 
>>> 
>>> Dict: {dict,16,16,16,8,80,48,
>>>            {[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},
>>>            {{[[{{connector_serv,init,1},[connector_suprc42,connector,<0.42.0>]}|548]],
>>>              [],
>>>              [[{{supervisor,connector_sup,1},[connector,<0.42.0>]}|3],
>>>               [{{connector_serv,init,1},[connector_supssl,connector,<0.42.0>]}|1460],
>>>               [{{supervisor,casserl_sup,1},[connector,<0.42.0>]}|1],
>>>               [{{supervisor,pushiphone_sup,1},[connector,<0.42.0>]}|2],
>>>               [{{pushiphone,init,1},['pushiphone-lite',connector,<0.42.0>]}|3],
>>>               [{{supervisor,clientpool_sup,1},[connector,<0.42.0>]}|1]],
>>>              [],
>>>              [[{{clientpool,init,1},[clientpool_sup,connector,<0.42.0>]}|1],
>>>               [undefined|4]],
>>>              [],
>>>              [[{{supervisor,connector,1},[<0.42.0>]}|1],
>>>               [{{casserl_serv,init,1},[casserl_sup,connector,<0.42.0>]}|50]],
>>>              [],[],[],
>>>              [[{{connector_serv,init,1},[connector_suprc4,connector,<0.42.0>]}|472],
>>>               [{{ssl_connection,init,1},
>>>                 [ssl_connection_sup,ssl_sup,<0.51.0>]}|
>>>                1366],
>>>               [{unknown,unknown}|3]],
>>>              [],[],
>>>              [[{{pushiphone,init,1},['pushiphone-full',connector,<0.42.0>]}|3]],
>>>              [],
>>>              [[{{pg2,init,1},[kernel_safe_sup,kernel_sup,<0.10.0>]}|1]]}}}
>>> ok
>>> 
>>> I'm very satisfied with supervisor, and I don't think to have the expertise tweaking it...
>>> 
>>> Le 23 mai 2013 à 14:19, Dmitry Kolesnikov <dmkolesnikov@REDACTED> a écrit :
>>> 
>>>> 
>>>> On May 23, 2013, at 1:04 PM, Morgan Segalis <msegalis@REDACTED> wrote:
>>>> 
>>>>> I have made a little function a while back, getting all processes and removing the processes inited at the beginning…
>>>> 
>>>> Could you please elaborate on that? Why you are not satisfied with supervisor?
>>>> 
>>>> - Dmitry 
>>> 
>> 
> 
> 
> _______________________________________________
> erlang-questions mailing list
> erlang-questions@REDACTED
> http://erlang.org/mailman/listinfo/erlang-questions
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-questions/attachments/20130523/c0f77824/attachment.htm>