Playing around with this, I actually found an even simpler way to trigger the issue:
PV guest #1: Install redis-server (and enable eth0 ip in config) PV guest #2: Install redis-tools and run 'redis-benchmark -q -h <PV guest #1 IP> -d 1000' The MTU size turns out to be irrelevant, this even happens with 1500 during the batch request tests. What does make a difference is to prevent scatter gather as it was reported in another bug about this (on any host that sees the "rides the rocket" message: sudo ethtool -K eth0 sg off I discussed the issue upstream and the driver should handle this case without dropping the request. It might be a bit complicated so I cannot give an ETA on the fix right now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1317811 Title: Dropped packets on EC2, "xen_netfront: xennet: skb rides the rocket: x slots" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1317811/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
