[rabbitmq-discuss] RabbitMQ Cluster High CPU Usage 100-200%+

[Francesco Mazzoli]

At Wed, 11 Jul 2012 18:12:24 +0800,
Wong Kam Hoong wrote:
> Hi,
> 
> Now i'm running RabbitMQ in 3 hosts in cluster mode, each Rabbit nodes run in disc mode, 
> but I found that even there is no produce and consume operation going on, the % cpu usage 
> remain very high especially on the master node. 
> 
> Below are the TOP result captured in the hosts:
> 
> Master Node 
> PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> 13994 rabbitmq  25   0  206m 114m 2304 S 205.0  2.9 670:29.57 beam.smp
> 
> 1st Slave
> PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> 13775 rabbitmq  25   0  136m  49m 2252 S 60.7  1.3   7:02.15 beam.smp
> 
> 2nd Slave
> PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> 23053 rabbitmq  25   0  135m  47m 2248 S  8.7  1.2   8:14.07 beam.smp
> 
> Based on the result captured on the hosts the memory usage is OK, but why the 
> %cpu usage can be so high? Is it due to my server configuration?

What version of rabbit are you using? We fixed a couple of bugs that could cause
things like this (I'm looking at you, gb_trees!).

--
Francesco * Often in error, never in doubt