[zeromq-dev] ZMQ_MCAST_LOOP with PGM

Steven McCoy steven.mccoy at miru.hk
Fri Aug 10 03:05:26 CEST 2012

On 7 August 2012 09:01, Pierre Ynard <linkfanel at yahoo.fr> wrote:

> For information, my personal transfer rate should be minimal enough, so
> I'm inclined to spare myself extra TCP or IPC sockets for the loopback
> case; that wouldn't fix the multiple sender issue anyway.

I've been thinking of implementing one of the new atomic reliable UDP
protocols that Oracle have been using, it should work great for this.

> > It has been this way a long time and can be easily reproduced with
> > multicast testing tools. Windows fairs better as sockets are handled
> > outside of the kernel but performance is significantly worse.
> > On Solaris and other UNIX flavours this is true, however as noted
> > before on Linux it is broken.
> That's interesting. Do you have any pointers to discussions about the
> roots of this? All I could find was stuff related to the basics I
> mentioned earlier.
It's on LKML somewhere, expect some minimal conversation along the lines
of: you shouldn't be doing that.

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