I'm running Rocky and trying to figure out filter order. I'm reading this doc: https://docs.openstack.org/nova/rocky/user/filter-scheduler.html It says: Each filter selects hosts in a different way and has different costs. The order of filter_scheduler.enabled_filters affects scheduling performance. The general suggestion is to filter out invalid hosts as soon as possible to avoid unnecessary costs. We can sort filter_scheduler.enabled_filters items by their costs in reverse order. For example, ComputeFilter is better before any resource calculating filters like RamFilter, CoreFilter. Is there a document that specifies filter costs, or ranks filters by cost? Is there a well-known process for determining the optimal filter order? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-discuss/attachments/20191112/6d030ace/attachment.html>