** Description changed: The fix for bug 1325128 [1] included changes to the metadata service seen at: - trunk [2]: 4a60c6a655006b2882331844664fac5cf67c5f34 - icehouse [3]: 9f59ca751f1a392ef24d8ab73a7bf5ce9655017e + trunk [2]: 4a60c6a655006b2882331844664fac5cf67c5f34 + icehouse [3]: 9f59ca751f1a392ef24d8ab73a7bf5ce9655017e The new code is around 100x slower. That slow down causes excessive load on the metadata server if an instance crawls the metadata service (which generates dozens of http requests). Both cloud-init and cirros's boot code crawl that meta-data service. The end result is linux instances boot time is dramatically affected. A typical Ubuntu boot time will be < 10 seconds to executing user code, but after this regression, I'm seeing boots in the range of 30 to 45 seconds. + While the fix is exactly intended to slow things down to improve + security, the performance regression seems significant enough to + address. + -- [1] http://pad.lv/1325128 [2] https://git.openstack.org/cgit/openstack/nova/commit/?id=4a60c6a655006b2882331844664fac5cf67c5f34 [3] https://git.openstack.org/cgit/openstack/nova/commit/?id=4a60c6a655006b2882331844664fac5cf67c5f34
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to nova in Ubuntu. https://bugs.launchpad.net/bugs/1361357 Title: metadata service performance regression ~100x To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1361357/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
