From e2267a1b556d27ffa650aa4d2cc3ccf1f671cccb Mon Sep 17 00:00:00 2001
From: Steven Allen <steven@stebalien.com>
Date: Mon, 6 Nov 2023 10:17:58 -0800
Subject: [PATCH] fix: explain why we ignore small time deltas

---
 sweeper.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sweeper.go b/sweeper.go
index 399eabb..0107ff5 100644
--- a/sweeper.go
+++ b/sweeper.go
@@ -107,6 +107,12 @@ func (sw *sweeper) update() {
 		}
 		return
 	} else if tdiff <= ewmaRate/10 {
+		// If the time-delta is too small, wait a bit. Otherwise, we can end up logging a
+		// very large spike.
+		//
+		// This won't fix the case where a user passes a large update (spanning multiple
+		// seconds) to `Meter.Mark`, but it will fix the case where the system fails to
+		// accurately schedule the sweeper goroutine.
 		return
 	}