[zeromq-dev] Apparent queuing on PUB/SUB fan-in despite HWM=1

[Pieter Hintjens]

On Fri, May 13, 2011 at 8:02 PM, Brian Rossa <rossabri at hotmail.com> wrote:

> I really feel that the BIG PICTURE question I want to answer can't be boiled
> down to a unit test so easily, though. The Question: "Is ZeroMQ suitable for
> use in real-time and just-in-time systems?" I think my approach, up to and
> including the test scripts I've sent, is pretty reasonable and I hope you'll
> have a look at it when you can. It has identified at least one use-case --
> PUB/SUB fan-in -- in which the answer seems to be "no." I am open to
> suggestions about how to turn those BIG PICTURE results into a constructive
> contribution to the project.

The only way to identify, reproduce, and fix specific issues with 0MQ
(or any similar technology) is to make precise test cases that
deliberately remove all other code which could be causing problems.

Let me show you some examples: https://github.com/zeromq/issues

-Pieter