[zeromq-dev] Integrating additional PGM rate limit controls into ØMQ

[Steven McCoy]

Hi Martin,

  ØMQ currently includes one configuration rate parameter, defined in the
man page as:

The *ZMQ_RATE* option shall set the maximum send or receive data rate for
> multicast transports such as zmq_pgm(7)<http://api.zeromq.org/zmq_pgm.html> using
> the specified *socket*.


With OpenPGM 5.1.95 you can now configure the following:

   - TXW_MAX_RTE, the maximum transport rate.
   - ODATA_MAX_RTE, limit for original data packets.
   - RDATA_MAX_RTE, limit for repair data packets.

And for whatever reason you can also set the following flags:

   - ODATA_CONTROLLED, whether original data packets are rate limited.
   - RDATA_CONTROLLED, whether repair data packets are rate limited.


So for deployment you can set a percentage of the channel capacity to
TXW_MAX_RTE, low enough to allow some TCP traffic in and out, and
ODATA_MAX_RTE to a value lower with sufficient head room for some repair
data to occur.

I would ignore the flags as they seem a bit redundant but configuring ODATA
and RDATA limits is what you have been after.

-- 
Steve-o
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