[rabbitmq-discuss] RabbitMQ writes non stop to disk

Simon MacMullen simon at rabbitmq.com
Tue Oct 25 12:26:49 BST 2011

On 25/10/11 02:07, Raphael Simon wrote:
> Hello all,
> We are seeing an issue on a production broker where the RabbitMQ process
> writes non stop to files in mnesia/<node>/msg_store_persistent. It keeps
> creating new files and the problem seems to be getting worse. Listing
> the files in that directory shows that it's creating a new 16 MB file
> every 2 to 4 minutes [1].
> The throughput of persistent messages in this broker is orders of
> magnitude less (maybe 20 msg/sec at the most, each being in the 10s of KB) .

Umm, if you average 10 msg/s and 30kB each (picking figures out of the 
air), that's 300kB/s. 16MB takes less than a minute to write at that 
speed. What were you expecting to see?

Cheers, Simon

Simon MacMullen
RabbitMQ, VMware

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