> Before we spend money, I'd love to hear someone report success with capturing > a single flow at >4Mpps, >20Gbps using netmap on Linux and > what NIC they use.
You said linux, and this is freebsd-net, but this blog post (from yesterday) is probably apt. https://blog.cloudflare.com/single-rx-queue-kernel-bypass-with-netmap/ > Ideally this would include transparent mode working so that ARP, ICMP etc can > be handled by the host stack. netmap-fwd (written by loos@ and announced yesterday at BSDcon Brazil) does this (re-injecting frames designed for ’this’ host on the host ring, though there is a mode to handle ARP and ICMP in the fastpath code). netmap-fwd is an implementation of the ip_fastforward code from FreeBSD on top of netmap. It currently does around 5Mpps, single-stream, on a single core using Chelsio or Intel NICs. It’s IPv4-only right now, but once we add IPv6(*), it will be open sourced. PPS @ 64-byte frames (pkt-gen) through DUT Device under test Network interface Kernel forwarding Fastforward enabled Tryforward patch netmap-fwd application C2358 (2 core, 1.7 Ghz) Intel I354 123 kbps 217 kbps 213 kbps 945 kpps C2758 (8 core, 2.4 GHz) Chelsio T520 10G 270 apps 426 apps 431 apps 1.683 Mpps Xeon-D 1540 (8 core, 2 GHz) Intel X552 10G 439 kbps 557 kbps 544 kbps 2.230 Mpps Xeon E3-1275 (4 core, 3.5 GHz) Intel X520-2 1.058 Mpps 1.331 Mpps 1.297 Mpps 5.053 Mpps ‘Tryforward' above is the code in https://reviews.freebsd.org/D3737 (We haven’t tried it on linux.) I find it likely that an application that acts as a simple filter like https://github.com/jibi/nm-single-rx-queue/blob/master/main.c or https://github.com/erikarn/netmap-tools/tree/master/src/bridge will greatly exceed the 5Mpps figure above. See also: http://adrianchadd.blogspot.com.br/2015/04/intel-ddio-llc-cache-buffer-alignment.html Jim (*) this work will need to wait until after we can get pfSense 2.3 released _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
