[zeromq-dev] Reliable pub sub on c++ linux

[Peter Krey]

I have HWM set to zero on recv and pub. I am keeping track of sequence
numbers recved on the sub socket which are sent out by the pub socket. Here
is an example output.

The pub socket is publishing a uint64_t seqNumber. If i change the socket
types to pair, no seqNumbers are ever missed.


 seqNumber missed 2301000
 seqNumber missed 2303206
 seqNumber missed 2305000
 seqNumber missed 2306820
 seqNumber missed 2309353
 seqNumber missed 2311575
 seqNumber missed 2314514
 seqNumber missed 2316767
 seqNumber missed 2318000
 seqNumber missed 2319924
 seqNumber missed 2321730
 seqNumber missed 2323618
 seqNumber missed 2325000
 seqNumber missed 2326963
 seqNumber missed 2329000
 seqNumber missed 2330664
 seqNumber missed 2333000
 seqNumber missed 2334997
 seqNumber missed 2336000
 seqNumber missed 2338000
 seqNumber missed 2340000
 seqNumber missed 2343000
 seqNumber missed 2344933
 seqNumber missed 2346401
 seqNumber missed 2349000
 seqNumber missed 2351000
 seqNumber missed 2352309
 seqNumber missed 2354198
 seqNumber missed 2356000
 seqNumber missed 2357645

On Mon, Apr 27, 2015 at 12:56 PM, Pieter Hintjens <ph at imatix.com> wrote:

> You can increase the HWM on sender and receiver to match your expectations.
>
> If you set the HWM to zero there will never be any message loss, which
> also means your publisher will explode if the subscriber stops
> reading.
>
>
>
> On Mon, Apr 27, 2015 at 9:03 PM, Peter Krey <krey at ripple.com> wrote:
> > Hi,
> >
> > What is the best way to get guaranteed in order delivery over pub-sub
> > framework in zmq using c++ on linux?
> >
> > I have a test server and client running zmq pub and sub sockets. The pub
> > pushes sequence numbers as fast as possible in a tight loop. The sub
> socket
> > misses around one in every 10k messages.
> >
> > Thanks
> >
> > _______________________________________________
> > zeromq-dev mailing list
> > zeromq-dev at lists.zeromq.org
> > http://lists.zeromq.org/mailman/listinfo/zeromq-dev
> >
> _______________________________________________
> zeromq-dev mailing list
> zeromq-dev at lists.zeromq.org
> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.zeromq.org/pipermail/zeromq-dev/attachments/20150427/8fa2d19e/attachment.htm>