On Tue, Jan 22, 2013 at 4:02 PM, Patrick Vultier <xinfor...@gmail.com> wrote: > Hi, > > I tried to use two OpenBSD systems as network load with iperf and netperf. > > Each server is equipped with two Intel dual NIC gigabit (plus one > embedded gigabit NIC), two Xeon 3.2GHz H.T., 12GB RAM and OpenBSD 5.2 > i386.
Why i386 on 12GB of RAM? Did you test amd64 and best option current? > > My problem, I can't exceed ~ 870Mbps with multiple interface as > reported in the experiments (see below). > (PF was disabled for all experiment). You think that 870Mbps is bad for 1Gbps card???? > > Why am I blocked at ~ 1Gbps limit ? Is this normal ? > EM drivers ? Kernel performance ? ... ? Maybe you want to try roundrobin option of http://www.openbsd.org/cgi-bin/man.cgi?query=trunk&apropos=0&sektion=0&manpath=OpenBSD+Current&arch=i386&format=html to aggregate traffic instead of load balance or I don't understand. > > Thanks for your help. > Xinform3n > > Initial post here: http://www.daemonforums.org/showthread.php?t=7618 > > experiment 1: > Server A - NIC em0 - Subnet A - @.111 > Server B - NIC em0 - Subnet B - @.222 > One-way test (64KB window): ~ 870Mbps > > experiment 2: > Server A - NIC trunk0 - Subnet A - @.111 > Server A - NIC em0 - trunkport, loadbalance > Server A - NIC em1 - trunkport, loadbalance > Server B - NIC trunk0 - Subnet B - @.222 > Server B - NIC em0 - trunkport, loadbalance > Server B - NIC em0 - trunkport, loadbalance > Switch side is well configured in aggregation with a hash algorithm > based on src.mac+dst.mac+src.ip+dst.ip+src.port+dst.port > One-way test (64KB window): ~ 870Mbps > Two parallel one-way test (64KB window): total don't exceed ~ 850Mbps > > experiment 3: > Server A - NIC trunk0 - Subnet A - @.111 and @.112 > Server A - NIC em0 - trunkport, loadbalance > Server A - NIC em1 - trunkport, loadbalance > Server B - NIC trunk0 - Subnet B - @.222 and @.223 > Server B - NIC em0 - trunkport, loadbalance > Server B - NIC em0 - trunkport, loadbalance > Switch side is well configured in aggregation with a hash algorithm > based on src.mac+dst.mac+src.ip+dst.ip+src.port+dst.port > One-way test (64KB window): ~ 870Mbps > Two parallel one-way test (64KB window, on different IP @): total > don't exceed ~ 850Mbps > > experiment 4: > Server A - NIC trunk0 - Subnet A - @.111 and @.112 > Server A - NIC em0 - trunkport, lacp > Server A - NIC em1 - trunkport, lacp > Server B - NIC trunk0 - Subnet B - @.222 and @.223 > Server B - NIC em0 - trunkport, lacp > Server B - NIC em0 - trunkport, lacp > Switch side is well configured in aggregation with LACP standard. > One-way test (64KB window): ~ 870Mbps > Two parallel one-way test (64KB window, on different IP @): total > don't exceed ~ 850Mbps > > experiment 5: > Server A - NIC em0 - Subnet A - @.111 > Server A - NIC em1 - Subnet B - @.111 > Server B - NIC em0 - Subnet A - @.222 > Server B - NIC em0 - Subnet B - @.222 > Two parallel one-way test (64KB window, on different IP @): total > don't exceed ~ 850Mbps
