From 587014e34fbfaf15fa151616bf636aeede58d30a Mon Sep 17 00:00:00 2001
From: Ivan FB <128452529+Ivansete-status@users.noreply.github.com>
Date: Thu, 30 Apr 2026 00:27:38 +0200
Subject: [PATCH] add event_loop_accumulates_lag_secs (#3833)

---
 waku/node/health_monitor/event_loop_monitor.nim | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/waku/node/health_monitor/event_loop_monitor.nim b/waku/node/health_monitor/event_loop_monitor.nim
index 49a2bcc6e..bd1a33e4e 100644
--- a/waku/node/health_monitor/event_loop_monitor.nim
+++ b/waku/node/health_monitor/event_loop_monitor.nim
@@ -10,6 +10,9 @@ declarePublicGauge event_loop_load,
   "chronos event loop load EWMA by window (1.0 = sustained lag at MaxAcceptedLag)",
   labels = ["window"]
 
+declarePublicCounter event_loop_accumulated_lag_secs,
+  "chronos event loop total accumulated lag in seconds since node start"
+
 type OnLagChange* = proc(lagTooHigh: bool) {.gcsafe, raises: [].}
 
 proc eventLoopMonitorLoop*(onLagChange: OnLagChange = nil) {.async.} =
@@ -55,6 +58,8 @@ proc eventLoopMonitorLoop*(onLagChange: OnLagChange = nil) {.async.} =
     let lagSecs = lag.nanoseconds.float64 / 1_000_000_000.0
     let load = lagSecs / maxAcceptedLagSecs
 
+    event_loop_accumulated_lag_secs.inc(lagSecs)
+
     ewma1m = alpha1m * load + (1.0 - alpha1m) * ewma1m
     ewma5m = alpha5m * load + (1.0 - alpha5m) * ewma5m
     ewma15m = alpha15m * load + (1.0 - alpha15m) * ewma15m