On 6/30/21 11:33 AM, Lorenzo Bianconi wrote: > Rework lb flow logic in order to visit first each load_balancer and then > related datapath during lb flow installation. > This patch allows to reduce memory footprint and cpu utilization in > ovn-northd. > > Testing environment: > ovn-nbctl lr-list |wc -l > 308 > ovn-nbctl ls-list |wc -l > 615 > ovn-nbctl lb-list |wc -l > 14524 > > Time needed for build_lrouter_lb_flows() to run for all datapaths/lbs > (logical routers) > Total samples: 22 > Maximum: 6937 msec > Minimum: 6869 msec > 95th percentile: 6933.000000 msec > Short term average: 6916.599206 msec > Long term average: 6914.809656 msec > > Time needed for build_pre_lb()/build_stateful()[lb-only] to run for all > datapaths/lbs (logical switches) > Total samples: 20 > Maximum: 1735 msec > Minimum: 1693 msec > 95th percentile: 1735.000000 msec > Short term average: 1731.136610 msec > Long term average: 1698.853040 msec > > Time needed for build_lrouter_flows_for_lb() to run for all lbs/datapaths > (logical routers) > Total samples: 22 > Maximum: 2745 msec > Minimum: 2674 msec > 95th percentile: 2742.000000 msec > Short term average: 2724.775973 msec > Long term average: 2681.334522 msec > > Time needed for build_lswitch_flows_for_lb() to run for all lbs/datapaths > (logical switches) > Total samples: 20 > Maximum: 406 msec > Minimum: 354 msec > 95th percentile: 406.000000 msec > Short term average: 383.915676 msec > Long term average: 363.318006 mse > > This series does not introduce any new feature to ovn-northd. >
Thanks Lorenzo for this series! I tried it out on one of our scale test deployments and, with an ovn-kubernetes-like Northbound Database, this patch set reduces event loop processing times in ovn-northd significantly. E.g., on a very large database from a 120-node cluster density test I see poll loop intervals going down from ~20 seconds to ~10 seconds. Regards, Dumitru _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
