[rabbitmq-discuss] rabbitmq gets high load

Doug doug at hacks.perl.sh
Fri Jan 18 03:42:32 GMT 2013

Thanks Tim.

This is the info in sasl log (many of these):

=SUPERVISOR REPORT==== 17-Jan-2013::17:00:31 ===
     Supervisor: {<0.31128.1705>,
     Context:    shutdown_error
     Reason:     noproc
     Offender:   [{pid,<0.31130.1705>},

=SUPERVISOR REPORT==== 17-Jan-2013::17:02:41 ===
     Supervisor: {<0.30250.1707>,
     Context:    shutdown_error
     Reason:     shutdown
     Offender:   [{pid,<0.30252.1707>},

And this is the status report:

Status of node 'testmq-master at ubuntu' ...
                        {os_mon,"CPO  CXC 138 46","2.2.9"},
                        {sasl,"SASL  CXC 138 11","2.2.1"},
                        {mnesia,"MNESIA  CXC 138 12","4.7"},
                        {stdlib,"ERTS  CXC 138 10","1.18.1"},
                        {kernel,"ERTS  CXC 138 10","2.15.1"}]},
 {erlang_version,"Erlang R15B01 (erts-5.9.1) [source] [64-bit]
[smp:8:8] [async-threads:30] [kernel-poll:true]\n"},

2013/1/17 Tim Watson <tim at rabbitmq.com>:
> Hi Doug
> On 17 Jan 2013, at 04:29, Doug wrote:
>> 17994 rabbitmq  20   0 11.6g  10g 1764 S  367 66.2 416834:07 beam.smp
>> As you see, rabbitmq process has lots of system load (367% CPU, 66.2% memory).
> Certainly looks like it. That level of CPU utilisation is a bit surprising.
>> It even can't list the queue now:
>> root at ubuntu:~# rabbitmqctl -p /pay list_queues
>> Listing queues ...
>> ^C
>> BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded
>>       (v)ersion (k)ill (D)b-tables (d)istribution
>> So how to handle this case? Thanks.
> You've not given us much to go on here. Normally I'd ask you to run the output of `rabbitmqctl report` but that's likely to lock up just as list_queues is doing. Can you post the regular as sasl rabbit logs please? If they're too bit to post, a /paste/ url will do fine and of course you may wish to scrub the logs to remove any private information if that's relevant.
> Also what kind of /usage/ is this rabbit subject to at the time? Is it serving a large number of producers, consumers, both? Have you looked at any stats around the time this starts happening in order to see what the broker is up to?
> Cheers,
> Tim
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