On Tue, Jan 21, 2014 at 10:50:30PM +0000, McGarvey, Kevin wrote: > I am sending UDP DNS queries to a KVM guest through Open vSwitch > running on the RHEL hypervisor. With traffic of only 5K > request/response pairs per second the CPU consumption of the > ovs-vswitchd process is over 60%. The source IP and port change with > each request, simulating normal UDP DNS traffic. It appears that > each request is being handled as a new flow and is being sent to the > userspace process. When I dump data flows with ovs-dpctl, there are > thousands of flows that are never used. > > Is there a way to get reasonable performance from Open vSwitch with > this type of traffic? I tried adding a flow with ovs-ofctl, > specifying the destination MAC of the guest and everything else > wildcarded, but I saw no change in the CPU consumption of > ovs-vswitchd.
You didn't say what version of OVS you're using. The CPU% used for this kind of traffic should drop dramatically with an upgrade to 1.11 or later. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
