[rabbitmq-discuss] High cpu usage on CentOS boxes

Tue Nov 26 05:24:20 GMT 2013

Hello Simon,
   Cent OS takes much lesser traffic than I have on Ubuntu. I migrated 5%
cpu traffic from ubuntu and It caused 15% cpu increase in Cent OS. I
goggled and noticed quite similar questions but didn't find any solutions.
If there are a few knobs that I can tune,  I would be happy to test it out.

    BTW, I don't use Mandatory/Immediate flags or Acks. All my publisher &
consumer calls are asynchronous.

Thanks,
Shri

On Mon, Nov 25, 2013 at 9:28 AM, Simon MacMullen <simon at rabbitmq.com> wrote:

> I'm afraid there isn't a good way to see which parts of the broker are
> busy at the moment (we hope to add something along these lines in a future
> release).
>
> I'm suspicious of the idea that it's distro-related though. Is the CentOS
> server really performing the same workload as the Ubuntu server?
>
> To get to the bottom of this you'd have to gradually take bits away until
> you see the CPU usage drop - stop connections, disable plugins and so on.
>
> Cheers, Simon
>
>
> On 25/11/2013 16:53, shridharan muthu wrote:
>
>> Hello There,
>>
>>     Reg my previous message, is there anyway to dig into the high cpu
>> usage issue? With similar configs in Ubuntu & Cent OS, Cent OS takes lot
>> more cpu for beam.smp process. I switched log level to "info" but
>> noticed nothing unusual.
>>
>> Any help would be appreciated.
>>
>> Thanks,
>> Shri
>>
>>
>> On Fri, Nov 22, 2013 at 3:56 PM, shridharan muthu
>> <shridharan.m at gmail.com <mailto:shridharan.m at gmail.com>> wrote:
>>
>>     Hi There,
>>          I am experiencing high cpu usage (above 400%) on Cent OS rabbit
>>     mq cluster (with 2 nodes). We have a similar setup in Ubuntu and cpu
>>     usage seems fine. Pls fine the report, status and top below.
>>
>>     OS: /CentOS release 6.4/
>>
>>     Report:
>>     /{pid,2148},/
>>     / {running_applications,/
>>     /     [{rabbitmq_management,"RabbitMQ Management Console","3.0.2"},/
>>     /      {rabbitmq_management_agent,"RabbitMQ Management
>> Agent","3.0.2"},/
>>     /      {rabbit,"RabbitMQ","3.0.2"},/
>>     /      {os_mon,"CPO  CXC 138 46","2.2.7"},/
>>     /      {rabbitmq_mochiweb,"RabbitMQ Mochiweb Embedding","3.0.2"},/
>>     /      {webmachine,"webmachine","1.9.1-rmq3.0.2-git52e62bc"},/
>>     /      {mochiweb,"MochiMedia Web Server","2.3.1-rmq3.0.2-
>> gitd541e9a"},/
>>     /      {xmerl,"XML parser","1.2.10"},/
>>     /      {inets,"INETS  CXC 138 49","5.7.1"},/
>>     /      {mnesia,"MNESIA  CXC 138 12","4.5"},/
>>     /      {amqp_client,"RabbitMQ AMQP Client","3.0.2"},/
>>     /      {sasl,"SASL  CXC 138 11","2.1.10"},/
>>     /      {stdlib,"ERTS  CXC 138 10","1.17.5"},/
>>     /      {kernel,"ERTS  CXC 138 10","2.14.5"}]},/
>>     / {os,{unix,linux}},/
>>     / {erlang_version,/
>>     /     "Erlang R14B04 (erts-5.8.5) [source] [64-bit] [smp:12:12]
>>     [rq:12] [async-threads:30] [kernel-poll:true]\n"},/
>>     / {memory,/
>>     /     [{total,285898072},/
>>     /      {connection_procs,16592856},/
>>     /      {queue_procs,1064888},/
>>     /      {plugins,269872},/
>>     /      {other_proc,13173224},/
>>     /      {mnesia,100632},/
>>     /      {mgmt_db,2167672},/
>>     /      {msg_index,35352},/
>>     /      {other_ets,72058416},/
>>     /      {binary,7326576},/
>>     /      {code,17434264},/
>>     /      {atom,3356065},/
>>     /      {other_system,152318255}]},/
>>     / {vm_memory_high_watermark,0.4},/
>>     / {vm_memory_limit,4991811584},/
>>     / {disk_free_limit,1000000000},/
>>     / {disk_free,17927184384},/
>>     / {file_descriptors,/
>>     /     [{total_limit,199900},/
>>     /      {total_used,314},/
>>     /      {sockets_limit,179908},/
>>     /      {sockets_used,312}]},/
>>     / {processes,[{limit,1048576},{used,2703}]},/
>>     / {run_queue,0},/
>>     / {uptime,3207797}]/
>>
>>      From Top:
>>     /   2249 rabbitmq  20   0 2989m 319m 2540 S 371.5  2.7  25109:43
>>     beam.smp /
>>
>>
>>
>>       Pls advise me how to proceed further.
>>
>>     Thanks,
>>     Shri
>>
>>
>>
>>
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>>
>
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