diff --git a/libraries/metrics/event_loop.coffee b/libraries/metrics/event_loop.coffee
index ab6955afc7..4e410892bf 100644
--- a/libraries/metrics/event_loop.coffee
+++ b/libraries/metrics/event_loop.coffee
@@ -1,18 +1,16 @@
-seconds = 1000
-
 module.exports = EventLoopMonitor =
-	monitor: (logger) ->
-		interval = setInterval () ->
-			EventLoopMonitor.Delay()
-		, 1 * seconds
+	monitor: (logger, interval = 1000, log_threshold = 100) ->
 		Metrics = require "./metrics"
+		
+		previous = Date.now()
+		intervalId = setInterval () ->
+			now = Date.now()
+			offset = now - previous - interval
+			if offset > log_threshold
+				logger.warn {offset: offset}, "slow event loop"
+			previous = now
+			Metrics.timing("event-loop-millsec", offset)
+		, interval
+		
 		Metrics.registerDestructor () ->
-			clearInterval(interval)
-
-	Delay: () ->
-		Metrics = require "./metrics"
-		t1 = process.hrtime()
-		setImmediate () ->
-			delta = process.hrtime(t1)
-			responseTime = delta[0]*1e6 + delta[1]*1e-3
-			Metrics.timing("event-loop-microsec", responseTime)
+			clearInterval(intervalId)