Reviewed: https://review.openstack.org/25399 Committed: http://github.com/openstack/nova/commit/e54700528a1cb3ead26eb0f2d1c1d0932885f07e Submitter: Jenkins Branch: milestone-proposed
commit e54700528a1cb3ead26eb0f2d1c1d0932885f07e Author: Vishvananda Ishaya <[email protected]> Date: Tue Mar 19 17:56:30 2013 -0700 Add caching for ec2 mapping ids. Requests to map ec2 ids can be slow when there are a large number of instances. These shouldn't ever change so cache them in memory for a week. The one week timeout is simply to prevent memory from growing uncontrollably. Fixes bug 1157437 Change-Id: I3f1c68959a933a7aaa50f122c34a716264c8722d (cherry picked from commit 76844433f69a7c29ed4566ad34d7e9740feaf660) ** Changed in: nova Status: Fix Committed => Fix Released -- 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/1157437 Title: euca-describe-instances is not optimized and takes 38 seconds for 700 VMs Status in OpenStack Compute (Nova): Fix Released Bug description: using Devstack (Grizzly-3) and nova SHA1 98f9f735d7e6ac32a8736971f4aab0d81c56131e and running as admin user. euca-describe-instances (POST /services/Cloud/ CloudController:DescribeInstances) is 13 times slower than nova list with 700 VMS. This is because s3_image_get_by_uuid is called three times per instance and block_device_mapping_get_all_by_instance, block_device_mapping_get_all_by_instance, aggregate_metadata_get_by_host, get_ec2_instance_id_by_uuid are called once per hose. So for 700 VMs that is 4900 DB calls! In comparison 'nova list' does 2 DB calls no matter how many VMs there are. When running the same thing as demo user I get the same thing To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1157437/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
