Standalone console harness under tests/ZB.MOM.WW.ScadaBridge.LoadHarness plus a
scaled-down Category=Performance smoke [Fact] in PerformanceTests. Deliberately an
Exe rather than an xunit suite: the Performance trait enables a filter but does not
exclude by default, so a 20-minute test would run on every 'dotnet test' of the slnx.
What is real: per-site ActorSystem + LocalDb SQLite file, the real DCL
(DataConnectionManagerActor/DataConnectionActor over a SimulatedDataConnection
registered through the documented DataConnectionFactory.RegisterAdapter seam), real
InstanceActors fed real TagValueUpdates, the real SiteStreamManager, real
StreamRelayActor + production-capacity bounded DropOldest channel, real
StoreAndForwardService/Storage, real SiteHealthCollector + CentralHealthAggregator.
Only the socket hops are stood in for.
Measures: end-to-end tag update latency (the emit instant rides
TagValueUpdate.Timestamp verbatim to the subscriber), instance ramp, memory
growth/CPU over a steady-state window, health report and debug view latency under
load, S&F concurrent buffering + drain throughput, and slow-subscriber isolation.
Joseph Doherty
20f6b0b969