I sent an email earlier titled: "Java NIO Selector Minimum Possible Latency".
I am NOT doing anything fancy like kernel bypass. On Tue, Aug 28, 2012 at 8:17 PM, Steven McCoy <[email protected]> wrote: > On 28 August 2012 20:11, Julie Anderson <[email protected]>wrote: > >> Over 10GbE ZeroMQ claims a latency of 33 micros from >> end-to-end<http://www.zeromq.org/results:10gbe-tests-v031>. >> If you subtract 2 micros from "over-the-wire" transit time it is still 31 >> micros. That's a lot! >> >> But if you make a simple test sending one packet from one side to the >> other, the total time is around 11 micros, or three times faster. >> >> What does ZeroMQ do to introduce 3 times more latency to the messages? >> >> > That document is 4 years old, hardware is faster today and low-microsecond > RTT requires a user-space stack to bypass kernel overheads which Mellanox > didn't have then. > > > http://www.mellanox.com/content/pages.php?pg=products_dyn&product_family=106&menu_section=69 > > -- > Steve-o > > _______________________________________________ > zeromq-dev mailing list > [email protected] > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > >
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