On 05/30/2011 03:55 PM, Marcus D. Leech wrote: > 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.
There are various papers out there dealing with IPC mechanisms in Linux. There is at least one [1] that indicates that IPC is performing quite good. On the other hand, I've seen others claiming the opposite. Unfortunately, I don't have any recent performance measurements available personally. But I agree, would be interesting to see some up-to-date benchmark results. Cheers, Andre [1] http://osnet.cs.binghamton.edu/publications/TR-20070820.pdf _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
