Your question is essentially identical (including the version numbers) to Kevin Parker's from a few hours earlier, so I'll give the same answer:
We've made a lot of improvements in flow set up rate since version 1.4, so upgrading to a more current version (we're on 1.10 now) will likely help. We're currently working on multithreading the OVS userspace and adding support for wildcarded flows in the kernel, which should substantially improve flow set up performance. --Justin On May 27, 2013, at 6:52 AM, ananthan <ananthannair...@gmail.com> wrote: > Hi, > I am having high traffic vms running on Xenserver 6.0.2 with some vms > using more than 11mbps which include public and private traffic. > And because of this high traffic vms i am not able to run more than 2 vms on > single host as ovs-vswitchd struggles to process packet resulting in heavy > packet loss. > > OVS Version: > > ovs 1.4.2 > > system@xapi3: > lookups: hit:19216169494 missed:18847093088 lost:7227365 > flows: 2581 > port 0: xapi3 (internal) > port 1: eth1 > port 2: eth0 > port 4: xapi4 (internal) > port 9: vif6.0 > port 14: vif12.0 > port 19: vif16.0 > port 20: vif17.0 > > may be because of this high miss rate ovs-vswitchd is consuming 80% CPU. > > Can some one please clarify this: > > 1.Is it normal for OVS to use 80% CPU for high traffic,is there any way to > bring down cpu usage as i am not able to run multiple high traffic vms on > same host,which makes virtualization inefficient. > 2.Why there are lot of missed flows and can this be minimized? (From my > understanding missed is because Data path couldn't find flow and need to > contact user daemon to generate one). > 3.I have read threads regarding high cpu usage because of too many flows but > in case its under 3000 and still using high cpu,can any one please clarify > this. > > Regards, > Ananth > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
