On Mon, Aug 19, 2013 at 6:39 AM, Jian Qiu <[email protected]> wrote: > Hi, > > We deployed openvswitch 1.4.6 on CentOS 6.4 in our production envioronment. > OVS were used to bridge KVM VMs. > > Recently, we found some VMs lost network connections randomly. When the > event happened, we login into the VMs through VNC console and found the ARP > tables were full of incomplete entries. It seemed that the ARP packets > in/out of the VMs were being dropped. > > We checked the ovs-vswitchd message logs when the network disconnection > happened, we found most of the messages complained high CPU usage of > ovs-switchd and "dropped log messages". (Samples are attached at the end of > email) > > I'm writing the email for your kind help. > > 1. Did the "dropped log messages" cause the VMs losing network connections?
No, it just means that the log messages have been rate limited. > 2. Is there any quick fix to this issue except replacing the OVS kernel > module as we couldn't reboot the hypervisor? Not a quick fix but newer versions of OVS will likely improve your performance. _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
