On Wed, Oct 23, 2013 at 9:18 PM, Morgan Yang <[email protected]> wrote: > Hi Jesse: > > > > The VM’s are staticly mapped to cpu cores. 16 cores total, 2 cores per VM, > each VM is running 2 threads of IPerf (client or server, this is a back to > back connection). > > > > All the CPU’s are running 40~45%. I have hyperthreading disabled, each VM > has 2GB of RAM, hypervisor has 32GB of RAM. Libvirt actually caches the swap > partition in memory as much as possible, so pretty much all 32GB of RAM on > the hypervisor is used when all 8 VMs are up.
I suspect that this CPU usage is not measuring the kernel, which is where most of the work is occurring. In any case, I would not be surprised if 40G of traffic is on the edge of what your system can handle and OVS pushes it over. _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
