On 27 November 2012 17:25, Dan Goes <[email protected]> wrote: > - What sort of performance increases could we see with UDP transport > over TCP transport in zeromq, if it were a feature? >
For the LAN and MAN you will likely see a decrease, don't forget TCP is highly accelerated and UDP is gets checksum acceleration and nothing else. Especially on systems such as Windows which has a really high IP stack overhead. Please prove me incorrect, but I see the architecture limitations when testing the PGM protocol. I cannot even make sendmmsg() or recvmmsg() worth the investment in implementation but might be more productive for a unicast channel. > ** > > ** ** > > - If UDP could help us, what options are available to have it baked into > zeromq? I understand it's not enough to express interest in a feature and > expect it to magically show up. Roughly speaking, where in the code would > be a good place to start building this in? In terms of effort and/or time > taken, can you take a really rough swing at estimating it? Thanks,**** > > > You could probably add UDT by duplicating all the TCP usage, UDT is designed for high-latency high-bandwidth environments where TCP congestion is not accommodating. -- Steve-o
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