[rabbitmq-discuss] Connection blocked by "flow" for more than 600 seconds

Simon MacMullen simon at rabbitmq.com
Wed Oct 9 10:30:05 BST 2013

On 09/10/2013 00:20, Matthias Radestock wrote:
> You might just be seeing normal flow control behaviour. Looks like you
> have lots of durable queues and are publishing persistent messages. That
> puts a huge strain on disk i/o, so that's likely the bottleneck which
> causes flow control to kick in.

*Particularly* if (as the OP was originally) there is a crunch on file 
descriptors - with lots of queues and very few file descriptors to share 
among them I suspect we might see quite a slowdown.

Cheers, Simon

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