[zeromq-dev] ZeroMQ behavior in satellite networks (high variable latency)

Doron Somech somdoron at gmail.com
Wed Feb 12 22:46:53 CET 2020


Except setting the nodelay flag, zeromq doesn't do anything special
regarding tcp.
I would try to compile without setting this flag, I wonder if it might help.

How many messages are you sending in a second per peer? What is the
high-watermark and tcp buffer size configurations?


On Wed, Feb 12, 2020, 23:18 Sylvain Fabre - INPIXAL <
sylvain.fabre at inpixal.com> wrote:

> Sorry, i forgot to add some missing information :
>
>    - When using a RTSP streaming, in TCP, in the same condition (ie
>    2Mb/sec stream) it is working fine.
>    - The kernel has already all the necessary options (TCP window size,
>    etc, etc).
>
> So what i can conclude tigh now on the satellite network :
>
>    - A "regular" TCP connection is working
>    - A ZMQ PUSH-PULL connection is not working
>
> So the issue seems to be related to ZMQ, in a way or another.
>
>
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