[rabbitmq-discuss] Response times for publisher confirms

Matthias Radestock matthias at rabbitmq.com
Tue Oct 16 12:38:17 BST 2012

On 16/10/12 12:28, Tim Watson wrote:
> Yes they're generally much faster than transactions. Bare in mind
> though, that if you're asking for confirms and the messages are
> persistent, then you're asking rabbit to fsync to disk repeatedly
> which is very expensive. Whether or not this is related to what
> you're seeing every 10 minutes is a little unclear to me, though some
> of the more knowledgeable rabbits may spot something I've missed
> here.

Nothing in rabbit is scheduled at a ten minute interval.

I can just about imagine that with a very regular load some ten minute 
pattern might emerge, but the more likely cause is some other 
application causing io contention.



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