Rabbitmq beam.smp process utilize most of the Memory size for no reason

Question

Rabbitmq beam.smp process utilize most of the Memory size for no reason

RabbitMQ version: 3.7 erlang 22

I don't have any special configuration or anything

I don't use celery or anything except Rabbitmq.

I searched for this issue and all I found is something related to celery!

What's the problem with this RabbitMQ .. it can't stand for couple of days without issues!

Answer 1

CPU utilization could be Erratic with large number of mirrored queues. Please mention the following RabbitMQ deployment details:

RabbitMQ v3.7
Erlang/OTP v22
Ubuntu 16.04.5 LTS
Linux 4.15.0-32-generic x86_64

mention dstat --cpu check for RabbitMQ nodes utilization w.r.t CPU (user + system)

Additionally u can do what It is possible to make schedulers that currently do not have work to do using the +sbwt flag:

RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS="+sbwt none"

The value of none can reduce CPU usage on systems that have a large number of mostly idle connections.

Answer 2

Several reasons can increase the CPU usage, you are not providing enough information.

What you should do is:

1. Check the rabbitmq logs, to see if there is some error
2. Check if you have some publisher that are trolling the server
3. Check the number of the queues/binding, maybe you are creating too many queues/binding

you can also enable this rabbitmq plugin https://github.com/rabbitmq/rabbitmq-top to see with process is using all the CPU