[zeromq-dev] Logging HWM events?

Pieter Hintjens ph at imatix.com
Tue Sep 27 01:28:53 CEST 2011

Hi Tom,

Take a look at the Suicidal Snail pattern in
http://zguide.zeromq.org/page:all. That might be what you're looking


On Mon, Sep 26, 2011 at 6:16 PM, Tom Wilberding <tom at wilberding.com> wrote:
> Hi there,
> I have an app using PUB/SUB over TCP. Is there a way to log when HWM is
> reached and we have entered into an exceptional state?
> We had a problem today where it appears that the PUB/SUB link went quiet
> for almost 30 minutes (it is usually processing hundreds or thousands of
> messages per second). Then we saw a slow trickle of very stale (i.e. 30
> minutes old) messages that lasted for another 30 minutes or so before I
> figured out that there was a problem and restarted the client.
> What is best practice to monitor/detect full buffer and HWM?
> Thanks,
> Tom
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