2014-11-09 21:37 GMT+01:00 George Shuklin <george.shuklin at gmail.com>: > Try to disable GRO on interfaces. It's well known bug, causing significant > net performance drop in case of the GRE tunnels. > > (Use ethtool) > Hi George, Thanks for your reply, but as mentioned in first message disabling GRO in physical interfaces doesn't improve the performance (step 5), only disabling TSO in virtual interfaces causes a significant improvement. the problem with that is a modification is needed every time an instance is launched. Cheers Alberto -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20141110/6ee1ea9c/attachment.html>