On Fri, Oct 18, 2013 at 6:05 PM, Jian Qiu <sword...@gmail.com> wrote: > Hi, > > > Previously, we used ovs 1.4.x and found ovs-vswitchd dropping logs. Then we > upgraded to ovs 1.11.0 as suggested on this mailing list. We did observe > drop of the CPU utilization on host. > > However, we still randomly found ovs-vswitchd dropping logs. Some ovs logs > are pasted below. > > I have two questions: > > 1) As megaflow was introduced in ovs 1.11.0, I'm wondering whether megaflow > is transparent to userspace? i.e. is there any specific requirement on flow > configuration so that we can fully utilize the power of megaflow? > > 2) As logs show, we persistently observed "failed to flow_del" messages in > our ovs logs. I'm wondering what's the cause for this warning message? > > Looking forward to your kind help. > > Many thanks. > > Jian Qiu > > === ovs logs ==== > > 2013-10-18T04:00:23Z|4395745|dpif|WARN|Dropped 1120 log messages in last 1 > seconds (most recently, 1 seconds ago) due to excessive rate > 2013-10-18T04:00:23Z|4395746|dpif|WARN|system@ovs-system: failed to flow_del > (No such file or directory)
I think you are not using the kernel module from 1.11 but rather an old kernel module or the kernel module that comes through linux kernel. > skb_priority(0),in_port(10),skb_mark(0),eth(src=54:25:8a:6c:5b:9d,dst=00:22:16:3b:ec:0d),eth_type(0x0800),ipv4(src=10.64.13.218,dst=10.64.15.204,proto=6,tos=0,ttl=63,frag=no),tcp(src=4401,dst=49559) > 2013-10-18T04:00:24Z|4395747|dpif|WARN|Dropped 1120 log messages in last 1 > seconds (most recently, 1 seconds ago) due to excessive rate > 2013-10-18T04:00:24Z|4395748|dpif|WARN|system@ovs-system: failed to flow_del > (No such file or directory) > skb_priority(0),in_port(10),skb_mark(0),eth(src=54:25:8a:6c:5b:9d,dst=00:22:16:3b:ec:0d),eth_type(0x0800),ipv4(src=10.64.13.218,dst=10.64.15.204,proto=6,tos=0,ttl=63,frag=no),tcp(src=4401,dst=49559) > 2013-10-18T04:00:25Z|4395749|dpif|WARN|Dropped 1120 log messages in last 1 > seconds (most recently, 1 seconds ago) due to excessive rate > 2013-10-18T04:00:25Z|4395750|dpif|WARN|system@ovs-system: > f2013-10-18T15:03:18Z|00001|vlog|INFO|opened log file > /usr/local/var/log/openvswitch/ovs-vswitchd.log > > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss > _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
