Hi! Very sorry about this, I had a draft that I thought I had sent.

Could you email me your libganglia.so binary off-list? Alternatively,
do you have the ability to compile libganglia with debugging symbols?

2015-11-17 1:56 GMT-08:00 Cristovao Cordeiro <[email protected]>:
> Hi everyone,
>
> any news on this?
> Another symptom is that this happens quite as often as the cluster changes, 
> meaning that the more activity there is in the cluster (delete machines, 
> create...) the more this issue happens. Could it be related with the deletion 
> of old hosts by gmond causing gmetad to try to access files that are already 
> gone?
>
> Cumprimentos / Best regards,
> Cristóvão José Domingues Cordeiro
>
>
> ________________________________________
> From: Cristovao Cordeiro [[email protected]]
> Sent: 09 November 2015 13:40
> To: Devon H. O'Dell
> Cc: [email protected]
> Subject: Re: [Ganglia-general] gmetad segmentation fault
>
> Hi Devon,
>
> thanks!
>
>  * I don't think there was a core dump. At least that is not stated in 
> /var/log/messages and I don't find anything relevant in /var/spool/abrt/
>  * I am running 3.7.1
>  * The addr2line returns ??:0. Also with gdb:
>    > gdb /usr/lib64/libganglia.so.0.0.0
>    ...
>    Reading symbols from /usr/lib64/libganglia.so.0.0.0...(no debugging 
> symbols found)...done.
>
> Some more information about my setup:
>  - I am running several gmonds in the same machine, so all my data_sources 
> are to localhost.
>
> Cumprimentos / Best regards,
> Cristóvão José Domingues Cordeiro
>
>
> ________________________________________
> From: Devon H. O'Dell [[email protected]]
> Sent: 09 November 2015 13:12
> To: Cristovao Cordeiro
> Cc: [email protected]
> Subject: Re: [Ganglia-general] gmetad segmentation fault
>
> Hi!
>
> I have a couple of initial questions that might help figure out the problem:
>
>  * Did you get a core dump?
>  * What version of ganglia are you running?
>  * This crash happened within libganglia.so at offset 0xb7b0. Can you run:
>
> $ addr2line -e /path/to/libganglia.so.0.0.0 0xb7b0
>
> and paste the output? If that does not work, there are a couple other
> things we can try to get information about the fault, but hopefully we
> can just work from there.
>
> Kind regards,
>
> Devon H. O'Dell
>
> 2015-11-09 0:13 GMT-08:00 Cristovao Cordeiro <[email protected]>:
>> Dear all,
>>
>> I have several Ganglia monitors running with similar configurations in
>> different machines (VMs) and for a long time now I have been experiencing
>> segmentation faults at random times. It seems to happen more on gmetads that
>> are monitoring larger number of nodes.
>>
>> In /var/log/messages I see:
>>
>> kernel: gmetad[3948]: segfault at 0 ip 0000003630c0b7b0 sp 00007f0ecbffebc0
>> error 4 in libganglia.so.0.0.0[3630c00000+15000]
>>
>>
>> and in the console output there's only this:
>>
>> /bin/bash: line 1: 30375 Terminated              /usr/sbin/gmetad
>>
>>                                                            [FAILED]
>>
>>
>> gmetad does not have any special configuration besides the RRD location
>> which in on a 4Gb ramdisk.
>>
>>
>> Cumprimentos / Best regards,
>> Cristóvão José Domingues Cordeiro
>>
>>
>> ------------------------------------------------------------------------------
>> Presto, an open source distributed SQL query engine for big data, initially
>> developed by Facebook, enables you to easily query your data on Hadoop in a
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>> _______________________________________________
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>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/ganglia-general
>>
>
> ------------------------------------------------------------------------------
> Presto, an open source distributed SQL query engine for big data, initially
> developed by Facebook, enables you to easily query your data on Hadoop in a
> more interactive manner. Teradata is also now providing full enterprise
> support for Presto. Download a free open source copy now.
> http://pubads.g.doubleclick.net/gampad/clk?id=250295911&iu=/4140
> _______________________________________________
> Ganglia-general mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/ganglia-general

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