Hi Paulo, I ran this one through AI so I got some new findings on the series. I've placed the findings with each individual patch file.
On Mon, Aug 31, 2026 at 1:04 PM Paulo Guilherme Silva <[email protected]> wrote: > > Currently ovn-ic recomputes its entire transit-switch/gateway/route > state on every change to the IC databases (or the local NB/SB). On > large interconnected deployments this full recompute dominates the > ovn-ic runtime and adds significant latency between a configuration > change in one AZ and its propagation to the others. > > This series introduces incremental processing (I+P) to ovn-ic, mirroring > the engine-node model already used by ovn-northd and ovn-controller. The > full recompute is split into per-subsystem engine nodes, and each node > gets an incremental change handler so that a change to a single object no > longer forces a global recompute. > > Approach > -------- > - The monolithic recompute is first refactored into per-subsystem > *_run functions and then into independent engine nodes (az, dp_enum, > gateway, ts, tr, port_binding, route, service_mon). > - Each node gains an incremental handler that reacts only to the > tracked changes on its inputs, falling back to recompute when a > change cannot be handled incrementally. > > Testing > ------- > - make check / make check-ovn-ic all pass. > - Scale test as above: > 3: perf-ovn-ic.at:233 ovn-ic basic scale test -- 200 VPCs x 3 AZs x 4 TSs: > incremental vs recompute -- parallelization=yes > 4: perf-ovn-ic.at:239 ovn-ic basic scale test -- 400 VPCs x 3 AZs x 4 TSs: > incremental vs recompute -- parallelization=yes > > Results > ------- > 3: ovn-ic basic scale test -- 200 VPCs x 3 AZs x 4 TSs: incremental vs > recompute -- parallelization=yes > Results for 'Incremental: +1 VPC at 200-VPC scale (node handler times)' > --- > en_ts incremental Maximum (msec): 5 > en_ts incremental Average (msec): 0.990723 > en_tr incremental Maximum (msec): 0 > en_tr incremental Average (msec): 0 > en_route incremental Maximum (msec): 6 > en_route incremental Average (msec): 1.458008 > en_port_binding incremental Maximum (msec): 0 > en_port_binding incremental Average (msec): 0 > en_tunnel_key incremental Maximum (msec): 1 > en_tunnel_key incremental Average (msec): 0 > > 3: ovn-ic basic scale test -- 200 VPCs x 3 AZs x 4 TSs: incremental vs > recompute -- parallelization=yes > Results for 'Full recompute at 201-VPC scale (node times)' > --- > en_ts recompute Maximum (msec): 3 > en_ts recompute Average (msec): 3.000000 > en_tr recompute Maximum (msec): 0 > en_tr recompute Average (msec): 0.000000 > en_route recompute Maximum (msec): 155 > en_route recompute Average (msec): 155.000000 > en_port_binding recompute Maximum (msec): 62 > en_port_binding recompute Average (msec): 62.000000 > en_tunnel_key recompute Maximum (msec): 3 > en_tunnel_key recompute Average (msec): 3.000000 > > 4: ovn-ic basic scale test -- 400 VPCs x 3 AZs x 4 TSs: incremental vs > recompute -- parallelization=yes > Results for 'Incremental: +1 VPC at 400-VPC scale (node handler times)' > --- > en_ts incremental Maximum (msec): 4 > en_ts incremental Average (msec): 1.301319 > en_tr incremental Maximum (msec): 0 > en_tr incremental Average (msec): 0 > en_route incremental Maximum (msec): 5 > en_route incremental Average (msec): 2.055176 > en_port_binding incremental Maximum (msec): 0 > en_port_binding incremental Average (msec): 0 > en_tunnel_key incremental Maximum (msec): 0 > en_tunnel_key incremental Average (msec): 0 > > 4: ovn-ic basic scale test -- 400 VPCs x 3 AZs x 4 TSs: incremental vs > recompute -- parallelization=yes > Results for 'Full recompute at 401-VPC scale (node times)' > --- > en_ts recompute Maximum (msec): 7 > en_ts recompute Average (msec): 7.000000 > en_tr recompute Maximum (msec): 0 > en_tr recompute Average (msec): 0.000000 > en_route recompute Maximum (msec): 147 > en_route recompute Average (msec): 147.000000 > en_port_binding recompute Maximum (msec): 121 > en_port_binding recompute Average (msec): 121.000000 > en_tunnel_key recompute Maximum (msec): 6 > en_tunnel_key recompute Average (msec): 6.000000 > > Paulo Guilherme Silva (13): > ic: Do not include config.h from headers. > northd: Read ic-vxlan_mode as a boolean value, not key presence. > ic: Prepare *_run functions for engine nodes. > ic: Split full recompute into per-subsystem engine nodes. > ic: Add incremental handler for the en_az node. > ic: Add the en_tunnel_key node. > ic: Add incremental handler for the en_gateway node. > ic: Add incremental handler for the en_ts node. > ic: Add incremental handler for the en_tr node. > ic: Add incremental handler for the en_port_binding node. > ic: Add incremental handler for the en_route node. > tests: Add ovn-ic incremental-processing basic scale test. > ic: Add incremental handler for the en_service_mon node. > > NEWS | 13 + > ic/automake.mk | 18 + > ic/en-address-set.c | 56 + > ic/en-address-set.h | 11 + > ic/en-az.c | 127 ++ > ic/en-az.h | 24 + > ic/en-gateway.c | 413 ++++ > ic/en-gateway.h | 15 + > ic/en-ic.c | 9 +- > ic/en-ic.h | 2 - > ic/en-port-binding.c | 1651 ++++++++++++++++ > ic/en-port-binding.h | 39 + > ic/en-route.c | 2773 ++++++++++++++++++++++++++ > ic/en-route.h | 39 + > ic/en-service-monitor.c | 552 ++++++ > ic/en-service-monitor.h | 16 + > ic/en-tr.c | 209 ++ > ic/en-tr.h | 15 + > ic/en-ts.c | 216 +++ > ic/en-ts.h | 19 + > ic/en-tunnel-key.c | 449 +++++ > ic/en-tunnel-key.h | 46 + > ic/inc-proc-ic.c | 279 ++- > ic/inc-proc-ic.h | 9 +- > ic/ovn-ic.c | 3854 ++++--------------------------------- > ic/ovn-ic.h | 59 +- > northd/en-global-config.c | 4 +- > ovn-ic-nb.xml | 23 + > tests/automake.mk | 3 +- > tests/ovn-ic.at | 636 ++++++ > tests/ovn-macros.at | 32 + > tests/ovn-northd.at | 18 + > tests/perf-ovn-ic.at | 250 +++ > tests/perf-testsuite.at | 1 + > 34 files changed, 8361 insertions(+), 3519 deletions(-) > create mode 100644 ic/en-address-set.c > create mode 100644 ic/en-address-set.h > create mode 100644 ic/en-az.c > create mode 100644 ic/en-az.h > create mode 100644 ic/en-gateway.c > create mode 100644 ic/en-gateway.h > create mode 100644 ic/en-port-binding.c > create mode 100644 ic/en-port-binding.h > create mode 100644 ic/en-route.c > create mode 100644 ic/en-route.h > create mode 100644 ic/en-service-monitor.c > create mode 100644 ic/en-service-monitor.h > create mode 100644 ic/en-tr.c > create mode 100644 ic/en-tr.h > create mode 100644 ic/en-ts.c > create mode 100644 ic/en-ts.h > create mode 100644 ic/en-tunnel-key.c > create mode 100644 ic/en-tunnel-key.h > create mode 100644 tests/perf-ovn-ic.at > > -- > 2.34.1 > > > -- > > > > > _'Esta mensagem é direcionada apenas para os endereços constantes no > cabeçalho inicial. Se você não está listado nos endereços constantes no > cabeçalho, pedimos-lhe que desconsidere completamente o conteúdo dessa > mensagem e cuja cópia, encaminhamento e/ou execução das ações citadas estão > imediatamente anuladas e proibidas'._ > > > * **'Apesar do Magazine Luiza tomar > todas as precauções razoáveis para assegurar que nenhum vírus esteja > presente nesse e-mail, a empresa não poderá aceitar a responsabilidade por > quaisquer perdas ou danos causados por esse e-mail ou por seus anexos'.* > > > > _______________________________________________ > dev mailing list > [email protected] > https://mail.openvswitch.org/mailman/listinfo/ovs-dev > _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
