On Wed, Aug 19, 2009 at 01:36:14AM -0400, Gregory Haskins wrote: > Please post results when you have numbers, as I had to > give up my 10GE rig in the lab. > I suspect you will have performance > issues until you at least address GSO, but you may already be there by now. Yes, measuring streaming bandwidth probably does not make sense yet, as I do not have GSO, and I do not have VM exit mitigation. But RSN. Meanwhile udp_rr does not need any of these, so I checked that and numbers look like what you'd expect. My systems seem slower than yours, but the virtualization overhead is same: around 20us (sometimes it's a bit higher, up to 25us). host to host: [root@virtlab18 netperf-2.4.5]# ~mst/netperf-2.4.5/bin/netperf -H 20.1.50.1 -t +udp_rr UDP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 20.1.50.1 +(20.1.50.1) port 0 AF_INET Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 262144 262144 1 1 10.00 13890.41 124928 124928 host to guest: [root@virtlab18 linux-2.6]# ~mst/netperf-2.4.5/bin/netperf -H 20.1.50.3 -t udp_rr UDP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 20.1.50.3 +(20.1.50.3) port 0 AF_INET Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 262144 262144 1 1 10.00 10884.78 124928 124928 -- MST -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
