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Re: [Discuss-gnuradio] Question about ZeroMQ Sub source

From: Vanush Vaswani
Subject: Re: [Discuss-gnuradio] Question about ZeroMQ Sub source
Date: Sun, 31 Aug 2014 21:18:27 +1000

I tried it but it's still very choppy.

I'm not 100% on the scheduler, but if the downstream graph requests 4096 items, and the zmq message size is 8192 items, wouldn't this result in choppy audio?


On Sun, Aug 31, 2014 at 3:56 AM, Johnathan Corgan <address@hidden> wrote:
On 08/30/2014 10:12 AM, Vanush Vaswani wrote:
> I've got a question relating to the zmq sub source.
> I've got a flowgraph that has rtlsdr -> pub sink

With pub/sub, the subscribers must keep up--a pub sinks have fire and
forget semantics.

Your are better off with push/pull here, the downstream flowgraph will
pull as needed and the upstream push block will wait.

Johnathan Corgan, Corgan Labs
SDR/DSP Training and Development Services

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