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
@@ -43,6 +43,7 @@ This is a semantic map, not a complete file inventory. Start here, then read the
 - Data path: `transport -> broker -> serial service -> UART1`; reverse data is fanned out per client.
 - Ownership: client IDs are slot/generation-safe; events are advisory and can drop, so use snapshots as authority.
 - Lifecycle: one permanent task and eight preallocated client slots; slow output drops only for the affected client.
+- Diagnostics: `broker counters` adds active-client ID/type/pending/HWM/UART/queued/read/dropped rows; clear seeds HWM from pending, disconnect removes rows but retains global discard accounting. `tests/session_broker_diagnostics/run.py`; capture before disconnect, never use consuming `broker read` as a probe. Semantics/recipe: `docs/web_throughput_diagnostics.md`.

 ## Native USB CDC

@@ -66,6 +67,7 @@ This is a semantic map, not a complete file inventory. Start here, then read the

 - Files: `src/web_server.{h,c}`, `src/web_serial_transport.{h,c}`, `src/web_ui.{h,c}`, `src/web_console.{h,c}`
 - Ordinary HTTPS idle cleanup: `src/web_httpd_idle.{c,h}`, owner sweep in `web_httpd_adapter.{c,h}`, lifecycle/TLS composition in `web_server.c`; `tests/web_httpd_idle/run.py`. Independent of diagnostics/optional transports: 15-second observed idle, one-second timer/one queued probe, six rows, actual WS/async/pending exemptions, safe current-owner shutdown and stop/restart fencing. No LRU/socket/timeout/stack increase. SDK queue/owner-delay limits and target checklist: `docs/https_idle_cleanup.md`.
+- Independent throughput diagnostics: `web_serial_transport.{c,h}` owns two fixed per-slot binary-TX aggregates and epoch fences; `web_console.c` exposes default-disabled `web performance enable|disable|show|clear`. Queue-entry/callback-entry, synchronous-send and completion/drain-return estimates, not peer receipt or scheduler-only latency. `tests/web_serial_performance/run.py`; resource/evidence limits and UART0 paired capture: `docs/web_throughput_diagnostics.md`.
 - Opt-in admission diagnostics: `src/web_diagnostics.{c,h}`, `tests/web_diagnostics/run.py`. Public synchronous HTTPS create/close callbacks publish six post-TLS connection records; four ticket/upgrade wrappers feed a 32-entry numeric ring. UART0/admin SSH `web diagnostics enable|disable|show|clear`; no queue/task/cleanup override or capacity change. Full bounds, SDK semantics and preaccept/TLS blind spots: `docs/phase8d11_implementation.md`.
 - Legacy removal **user-signed-off 2026-09-08** (unchanged certificate fingerprint, preexisting users usable, full-mix evidence): `user_database` persists missing storage empty and preserves valid v1 user bytes; private derived `v1_admin_marker`, no public bootstrap/migration/sync APIs. `web_security` privately migrates v1 1392-byte material to TLS-only v2 1340-byte material, exact identity/generation retained, commit before publish, fail closed without fallback overwrite. Credential commands removed; user generated passwords and TLS rotation remain. Contracts, downgrade and evidence limits: `docs/legacy_credential_removal.md`.
 - Security files: `src/web_security.{h,c}`, `src/web_cookie_auth.{h,c}`, `src/web_session_store.{h,c}`, `src/web_auth_parse.{h,c}`. Private IDF boundary: `src/web_httpd_adapter.{h,c}`.