With the help of logical_flow's in_out_port tag, we can skip parsing a big portion of the logical flows in SB DB, which can largely improve ovn-controller's performance whenever a full recompute is required.
With a scale test topology of 1000 chassises, 20 LSPs per chassis, 20k lports in total spread acrossing 200 logical switches, connected by a logical router, the test result before & after this change: Before: - lflow-cache disabled: - ovn-controller recompute: 2.7 sec - lflow-cache enabled: - ovn-controller recompute: 2.1 sec - lflow cache memory: 622103 KB After: - lflow-cache disabled: - ovn-controller recompute: 0.83 sec - lflow-cache enabled: - ovn-controller recompute: 0.71 sec - lflow cache memory: 123641 KB (note: DP group enabled for both) So for this test scenario, when lflow cache is disabled, latency reduced ~70%; when lflow cache is enabled, latency reduced ~65% and lflow cache memory reduced ~80%. Signed-off-by: Han Zhou <hz...@ovn.org> --- controller/lflow.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/controller/lflow.c b/controller/lflow.c index c58c4f25c..871d3c54d 100644 --- a/controller/lflow.c +++ b/controller/lflow.c @@ -740,6 +740,27 @@ consider_logical_flow__(const struct sbrec_logical_flow *lflow, return true; } + const char *io_port = smap_get(&lflow->tags, "in_out_port"); + if (io_port) { + lflow_resource_add(l_ctx_out->lfrr, REF_TYPE_PORTBINDING, io_port, + &lflow->header_.uuid); + const struct sbrec_port_binding *pb + = lport_lookup_by_name(l_ctx_in->sbrec_port_binding_by_name, + io_port); + if (!pb) { + VLOG_DBG("lflow "UUID_FMT" matches inport/outport %s that's not " + "found, skip", UUID_ARGS(&lflow->header_.uuid), io_port); + return true; + } + char buf[16]; + get_unique_lport_key(dp->tunnel_key, pb->tunnel_key, buf, sizeof buf); + if (!sset_contains(l_ctx_in->related_lport_ids, buf)) { + VLOG_DBG("lflow "UUID_FMT" matches inport/outport %s that's not " + "local, skip", UUID_ARGS(&lflow->header_.uuid), io_port); + return true; + } + } + /* Determine translation of logical table IDs to physical table IDs. */ bool ingress = !strcmp(lflow->pipeline, "ingress"); -- 2.30.2 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev