This series implements a cache for xlate_actions() so that full flow translation does not need to be performed for long-lived flows; instead, references are kept to the modules affected by it, and this cache can be used to attribute stats and effect other side-effects of xlation.
This patch series improves CRR performance mildly in the typical case; modestly for cases where revalidation is constantly occurring; and makes the work for revalidator threads much more efficient, allowing more flows to be maintained in the datapath. Note that patch #8 causes revalidators to remove any flows that are not experiencing high throughput. The "modules" which logic is implemented for are: * Stats attribution: + Rules + Netdevs + Bonds + Mirrors * Side effects: + Learn actions - hard timeout refresh + Normal actions - mac learning There are minor testsuite failures in the later patches, but as a whole this is fairly complete. I am looking for feedback on the approach, specifically whether I may have missed some modules, if there are any holes in the logic where typical operation may cause failures, and if there is perhaps areas that I do not go far enough. I do plan to look into shifting ukey creation into handler threads, but that is a later topic. Joe Stringer (9): netflow: Make netflow_flow_update() parameter const. mirror: Use 'struct ref_count' for refcounting. ofproto-dpif: Use 'struct dpif_stats' for stats. tests: Test learned flow idle timeouts. bond: Export bond hashing functions for accounting. ofproto: New function ofproto_refresh_rule(). ofproto-dpif: Allow caching of xlate_actions() effects. revalidator: Only revalidate high-throughput flows. ofproto-dpif: Revalidate flows more promptly. ofproto/bond.c | 34 ++++- ofproto/bond.h | 4 + ofproto/netflow.c | 2 +- ofproto/netflow.h | 2 +- ofproto/ofproto-dpif-mirror.c | 30 ++-- ofproto/ofproto-dpif-upcall.c | 52 +++++-- ofproto/ofproto-dpif-xlate.c | 314 ++++++++++++++++++++++++++++++++++++++++- ofproto/ofproto-dpif-xlate.h | 15 ++ ofproto/ofproto-dpif.c | 45 +++--- ofproto/ofproto-dpif.h | 1 + ofproto/ofproto-provider.h | 2 + ofproto/ofproto.c | 62 +++++++- tests/learn.at | 103 ++++++++++++++ 13 files changed, 607 insertions(+), 59 deletions(-) -- 1.7.9.5 _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
