Andre Oppermann writes: > > I have already the next round in the works which is optimized even more > by merging consecutive mbuf chains together (at the moment I have packet > segment chains which have a direct pointer to the mbuf at the end of the > chain) and which get passed in one go to soappend_stream. This removes > the "present" loop and simplifies the general code a bit more again.
Great.. I've been a little busy, and have only run tests -- I haven't even looked at the code ;) > With this and two other optimizations I have in mind you should be able > to get very close to the theoretical maximum bandwidth of your current > 4Gig Myrinet cards. > > There are a couple of other TCP tweaks that would help your special case > some more now though. FWIW, the out-of-order frames are a firmware bug that we hope to fix soon. Its just icing on the cake that the bug makes such a nice test case for you ;) With no copy overhead (kttcp), 3.95Gb/sec is easily achievable, even in 5-stable with the old TCP reassembly code. Drew _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
