-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 02/10/13 22:49, James Page wrote: >> sudo ip netns exec qrouter-d3baf1b1-55ee-42cb-a3f6-9629288e3221 >>> traceroute -n 10.5.0.2 -p 44444 --mtu traceroute to 10.5.0.2 >>> (10.5.0.2), 30 hops max, 65000 byte packets 1 10.5.0.2 0.950 >>> ms F=1500 0.598 ms 0.566 ms >>> >>> The PMTU from the l3 gateway to the instance looks OK to me. > I spent a bit more time debugging this; performance from within > the router netns on the L3 gateway node looks good in both > directions when accessing via the tenant network (10.5.0.2) over > the qr-XXXXX interface, but when accessing through the external > network from within the netns I see the same performance choke > upstream into the tenant network. > > Which would indicate that my problem lies somewhere around the > qg-XXXXX interface in the router netns - just trying to figure out > exactly what - maybe iptables is doing something wonky?
OK - I found a fix but I'm not sure why this makes a difference; neither my l3-agent or dhcp-agent configuration had 'ovs_use_veth = True'; I switched this on, clearing everything down, rebooted and now I seem symmetric good performance across all neutron routers. This would point to some sort of underlying bug when ovs_use_veth = False. - -- James Page Ubuntu and Debian Developer james.p...@ubuntu.com jamesp...@debian.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSTTh6AAoJEL/srsug59jDmpEP/jaB5/yn9+Xm12XrVu0Q3IV5 fLGOuBboUgykVVsfkWccI/oygNlBaXIcDuak/E4jxPcoRhLAdY1zpX8MQ8wSsGKd CjSeuW8xxnXubdfzmsCKSs3FCIBhDkSYzyiJd/raLvCfflyy8Cl7KN2x22mGHJ6z qZ9APcYfm9qCVbEssA3BHcUL+st1iqMJ0YhVZBk03+QEXaWu3FFbjpjwx3X1ZvV5 Vbac7enqy7Lr4DSAIJVldeVuRURfv3YE3iJZTIXjaoUCCVTQLm5OmP9TrwBNHLsA 7W+LceQri+Vh0s4dHPKx5MiHsV3RCydcXkSQFYhx7390CXypMQ6WwXEY/a8Egssg SuxXByHwEcQFa+9sCwPQ+RXCmC0O6kUi8EPmwadjI5Gc1LoKw5Wov/SEen86fDUW P9pRXonseYyWN9I4MT4aG1ez8Dqq/SiZyWBHtcITxKI2smD92G9CwWGo4L9oGqJJ UcHRwQaTHgzy3yETPO25hjax8ZWZGNccHBixMCZKegr9p2dhR+7qF8G7mRtRQLxL 0fgOAExn/SX59ZT4RaYi9fI6Gng13RtSyI87CJC/50vfTmqoraUUK1aoSjIY4Dt+ DYEMMLp205uLEj2IyaNTzykR0yh3t6dvfpCCcRA/xPT9slfa0a7P8LafyiWa4/5c jkJM4Y1BUV+2L5Rrf3sc =4lO4 -----END PGP SIGNATURE----- _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
