** No longer affects: nova (Ubuntu) ** No longer affects: nova
** Also affects: neutron Importance: Undecided Status: New ** Also affects: neutron (Ubuntu) Importance: Undecided Status: New ** No longer affects: nova (Ubuntu Trusty) ** No longer affects: nova (Ubuntu Utopic) ** Changed in: neutron Status: New => Confirmed ** Changed in: neutron (Ubuntu Trusty) Status: New => Confirmed ** Changed in: neutron (Ubuntu Utopic) Status: New => Confirmed -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1361357 Title: metadata service performance regression ~100x Status in Ubuntu Cloud Archive: Confirmed Status in ubuntu-cloud-archive icehouse series: Confirmed Status in ubuntu-cloud-archive juno series: Confirmed Status in OpenStack Neutron (virtual network service): Confirmed Status in “neutron” package in Ubuntu: Confirmed Status in “neutron” source package in Trusty: Confirmed Status in “neutron” source package in Utopic: Confirmed Bug description: The fix for bug 1325128 [1] included changes to the metadata service seen at: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1361357/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp