I wonder if this fix fell out or is somehow different now? The below script, on 4.11rc7:
1cpu: 0m1.379s 12cpu: 1m36.556s 72cpu: 2m20.118s This is a *huge* impact for neutron L3 agent on my OpenStack system. # cd /tmp # ip netns add foo # ip netns add bar # for i in `seq 0 1000` ; do echo -e 'netns exec foo echo\nnetns exec bar echo' >> ipnetns.batch ; done # time ip -b ipnetns.batch > /dev/null -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1328088 Title: Kernel network namespace performance regression during rcu development on kernels above 3.8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1328088/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
