Hi all, I am using KVM on ubuntu 12.04.02 . full spec: - Dell C6220 , 32G RAM , Software RAID1 500GB x 2 , 12 Cores (24 +Hyper) - Ubuntu server 12.04.02 Kernel 3.5.0.40 / KVM version 1.00 - Using virtio on disk and network vhost_net as kernel module - Using bridge over bond with 2 network interfaces (1g each , active backup mode) iperf tests I get an excellent trpt of ~ 940Mbit/s on a 1Gb/s port , that said I operate 3 centos 5.9 vm's this box which all together consume ~ 10Mbit/s o peak times I am seeing insane numbers of context switching and interrupt per seconds (Host machine) while the machines are idle most of the time : ~ 50k CS , and SI of ~ 80k , this of course impact performance and I wonder why on a non busy kvm host I get this number , I red that vhost_net should improve the network latency as it should bypass the qemu user level ... Will gladly share all needed information... Any Ideas? Thanks! -- 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
