Re: [Discuss-gnuradio] FIFO latency

[Marcus D. Leech]

On 30/05/2011 9:51 AM, Alexander Chemeris wrote:
> > Linux' pipe implementation is known to be quite slow. I would suggest to
> > use UNIX sockets instead. They should perform much better in terms of
> > latency and performance.
> Good idea.
I'm dubious of such a claim--the core mechanisms between Unix-domain 
sockets and FIFOs are very similar.

While it's true that it *used* to be the case that pipes/FIFOs were 
handled as disk files, that's no longer true--they
  just implement ring-buffer objects within the kernel, and Unix-domain 
sockets are also quite similar--in fact, they
  are likely higher overhead, because they have to go through the 
labyrinthine socket stack, which FIFOs don't.

I did my part to put together a FIFO test, so if someone wants to do a 
Unix-domain socket benchmark we could settle
  that question.