From 17563521069571e97561e9cf2e1d94e4ae6e012a Mon Sep 17 00:00:00 2001
From: Kaslo <kaslo@kaslo.me>
Date: Fri, 19 Dec 2025 22:08:00 -0600
Subject: [PATCH] fix: remove timestamp rounding in TerseJsonFormatter The
 round(record.created, 2) call limits timestamps generated by
 TerseJsonFormatter to 10ms precision. This can cause log ordering issues in
 log aggregators like Loki when multiple events occur within the same 10ms
 window.

The rounding was introduced in the original structured logging PR and,
to my knowledge, has no technical benefit.
---
 synapse/logging/_terse_json.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/synapse/logging/_terse_json.py b/synapse/logging/_terse_json.py
index d9ff70b252..5afa4c5fa9 100644
--- a/synapse/logging/_terse_json.py
+++ b/synapse/logging/_terse_json.py
@@ -89,7 +89,7 @@ class TerseJsonFormatter(JsonFormatter):
             "log": record.getMessage(),
             "namespace": record.name,
             "level": record.levelname,
-            "time": round(record.created, 2),
+            "time": record.created,
         }
 
         return self._format(record, event)