[zeromq-dev] Can I prevent zeromq from occupying file descriptors?

Doron Somech somdoron at gmail.com
Tue Jul 19 18:00:02 CEST 2016


I'm  not sure I  understand,  each file descriptor is a socket.  When
zeromq accept tcp socket another file descriptor is created. OS should be
able to manage thousands and tens of thousand open descriptor.

On Jul 19, 2016 6:56 PM, "Alexander Poddey" <alexander.poddey at gmx.net>
wrote:

>
> Essentially, the question is:
> why does ZMQ consume file descriptors at all?
>
>
>
>
> > Hi,
> >
> > I have a setup in C++ on linux where a master process is setting up a
> > ZMQ_ROUTER and then forks many child processes, which then connect to
> that
> > router (tcp protocol).
> > Whenever a child zmq_connect's to the master, a file descriptor is
> > occupied (and assigned to the master process). They get free'ed fine when
> > the connection is close.
> >
> > This however limits the number of interacting processes to the number of
> > allowed file descriptors (per process). For me (linux), this currently is
> > 1024, which is way to small for my intended use (multi-agent / swarm
> > simulation).
> >
> > Can I prevent this behaviour?
> > In my mesaging architecture, each agent connects to 6 sockets, so with
> 100
> > agents I end up with 600 occupied file descriptors :-(
> >
> > Alexander
> >
> >
> > _______________________________________________
> > zeromq-dev mailing list
> > zeromq-dev at lists.zeromq.org
> > http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>
>
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