Add broker and web throughput diagnostics

2026-09-08 22:40:58 +02:00
parent 36d41be422
commit 042499e4d6
20 changed files with 899 additions and 5 deletions
@@ -84,6 +84,8 @@ UART RX -> serial-service RX stream -> broker task

 The broker drains serial input even with no clients. A full client output stream drops only that client's copy and updates drop counters; it does not block UART reception or other clients.

+Active-client counter snapshots expose ID/type/pending/HWM/UART/queued/read/dropped. HWM is maintained independently of web tracing and counter clear seeds current occupancy. Read means transport handoff, not peer receipt. Disconnect removes the client row while global totals retain traffic and unread-output discards. Independent default-disabled web performance capture uses two fixed slot records and nonwrapping epoch/generation fences; toggles fence in-flight samples, disable freezes aggregates, clear preserves enable state. Binary-only timestamps bound reservation-entry to callback-entry before locking, synchronous send calls and completion to broker-read return; idle and intervening work prevent scheduler-only/backlog-at-completion claims. No new instrumentation allocations or scheduling/buffer changes. Exact fields, overhead and capture contracts: `docs/web_throughput_diagnostics.md`.
+
 ### Clients to RS-232

 ```text