[rabbitmq-discuss] mnesia is overloaded

Jon Brisbin jon at jbrisbin.com
Wed Jul 14 14:57:46 BST 2010


I can't always re-create the problem, but I have a unit test that creates a hundred or more bindings as fast as I can spool off threads. It might be able to be isolated like that...

jb


On Jul 13, 2010, at 5:25 PM, Matthias Radestock wrote:

> Tony,
> 
> Tony Garnock-Jones wrote:
>>>>> =WARNING REPORT==== 10-Jul-2010::09:01:05 ===
>>>>> Mnesia('rabbit at brisbins-mbp'): ** WARNING ** Mnesia is overloaded:
>>>>> {dump_log,
>>>>>  time_threshold}
>>> The warning message is indicative of a very high rate of AMQP resource
>>> configuration operations, e.g. creation/deletion of exchanges, queues
>>> and bindings. Is that what you'd expect to see from your tests?
>> Hm, oddly I've been seeing that with recent builds from tip-of-default a bit
>> too. I haven't figured out what could be causing it yet; load is generally low,
>> and I see it while rabbit is actually idle. This'd be on karmic in a virtual
>> machine on my OS X laptop.
> 
> I wonder whether VM-induced clock adjustments could trigger the warning. I vaguely recall some weirdness in that area being reported by people on erlang-questions, but that was quite a while ago.
> 
> 
> Matthias.
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Thanks!

J. Brisbin
http://jbrisbin.com/






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