- store.rs: MemStore now implements GenServer (one inbox, one hop/request),
replacing the AnyReq + two-forwarder fan-in that cost two extra park/unpark
hops per request and contaminated the spin signal. StoreHandle is now an
enum {Memory(ServerRef<MemStore>) | Sqlite{reads,writes}} with one call().
Response status/body semantics unchanged (S3 stays comparable).
- SQLite store left on raw actors (single-writer + reader pool); not ported
(single-inbox would serialise S4 reads) and not part of the spin A/B. Kept
behind the handle so --store=sqlite still builds.
- handlers.rs: 6 handlers collapse to state.store().call(StoreReq::..); the
per-handler channel+send+recv boilerplate is gone. main.rs untouched.
- spin_ab_urus.sh + analyze_spin_ab_urus.py: A/B the spin policy on urus by
checking out smarm b0c9685 (pre-spin) vs HEAD, S2/S3 on urus-mem, server
cores 1/2/4/8 (2/4 gate-active, 1/8 inert), printing RPS speedup + latency
deltas. Verified: builds release; mem+sqlite smoke pass; scripts dry-run +
analyzer fixture-checked. Real sweep needs the multi-core box.
sandbox-agent
56e490c205