[rabbitmq-discuss] mnesia is overloaded

Tue Jul 13 23:25:19 BST 2010

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.