On Tue, Dec 27, 2011 at 03:00:47PM +0100, Pawel Tyll wrote: > > IPFW seems to add more or less constant overhead per rule. In our setup, > > ~20 rules increase load by 100% (one core). We are able to reach 10GE > > (1.1mpps) on some routers with most packets travelling 8-10 ipfw rules. > > However, even with ipfw add 1 allow ip from any to any > > 1.1 mpps routing utilizes E5645 by more that 80%. (with IGP routes in > > rtable only). YMMV, but 2x10G is too much at the moment even without ipfw. > Does this include jumbo-frames? 1.1 mpps is far from 10gbit with > standard Internet 1500-byte traffic, unless you meant 11.1 mpps :)
a 1500-byte frame is 12k bits so you need 830 Kpps to saturate the 10G link in one direction (and say another 450 Kpps as acks in the other direction). I reported the performance of ipfw+dummynet http://info.iet.unipi.it/~luigi/papers/20091201-dummynet.pdf on a 2.3GHz box and 800MHz RAM. The E5645 mentioned in the original msg is probably 2x faster than my test machine. > Are there any plans or hopes for efficiency increase? Something like > netmap? (http://info.iet.unipi.it/~luigi/netmap/) plans, yes - not sure how long it will take. I have compiled ipfw+dummynet as a standalone module (outside the kernel) but have not yet hooked the code to netmap to figure out how fast it can run. cheers luigi _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
