G0: dich chinh - khong co drift bridge (run2 drained=True, recv=sent=10000), rut de xuat bu drift

native_bridge/debug/g0_latency_probe.py

@@ -69,6 +69,7 @@ def run(name, chain, n_blocks):
         next_idx = 0
         batch_dur = PERIOD * 4
         batches = n_blocks // 4
+        pump_t0 = time.perf_counter()
         for b in range(batches):
             t0 = time.perf_counter()
             for _ in range(4):
@@ -83,6 +84,19 @@ def run(name, chain, n_blocks):
             dt = time.perf_counter() - t0
             if dt < batch_dur:
                 time.sleep(batch_dur - dt)
+        # Drain phần còn lại (bridge xử lí nốt backlog) — nếu bridge theo kịp
+        # input, recv đủ = sent ngay sau pump; thiếu kéo dài = drift thật.
+        drain_t0 = time.perf_counter()
+        while len(recv_t) < len(send_t) and time.perf_counter() - drain_t0 < 2.0:
+            outs = sess.read_output()
+            base = len(recv_t)
+            for k in range(len(outs)):
+                recv_t.append((base + k, time.perf_counter()))
+            if not outs:
+                time.sleep(0.002)
+        pump_t1 = time.perf_counter()
+        stats["pump_rate"] = len(recv_t) / (pump_t1 - pump_t0)
+        stats["drained"] = len(recv_t) == len(send_t)
         # round-trip per block
         rt = []
         for j, tr in recv_t:
@@ -135,6 +149,8 @@ def main():
         st = run(name, chain, args.blocks)
         results[name] = st
         print("plugin_latency:", st.get("plugin_latency"))
+        print("pump_rate=%.3f blk/s drained=%s (bridge theo kip input: rate ~187.5 va drained=True)" %
+              (st.get("pump_rate", 0), st.get("drained")))
         rt = st.get("roundtrip_ms", {})
         print("roundtrip_ms n=%d mean=%.3f sd=%.3f min=%.3f p50=%.3f p99=%.3f max=%.3f" %
               (rt.get("n", 0), rt.get("mean", 0), rt.get("sd", 0), rt.get("min", 0),