gnodet-bot commented on code in PR #28382:
URL: https://github.com/apache/camel/pull/28382#discussion_r4367526352


##########
core/camel-core-processor/src/main/java/org/apache/camel/processor/TotalRequestsThrottler.java:
##########
@@ -161,7 +162,7 @@ public boolean process(final Exchange exchange, final 
AsyncCallback callback) {
 
                 if (state == State.ASYNC) {
                     if (LOG.isTraceEnabled()) {
-                        long queuedTime = System.currentTimeMillis() - 
queuedStart;
+                        long queuedTime = TimeSource.currentTimeMillis() - 
queuedStart;

Review Comment:
   ⚠️ **Pre-existing bug (not introduced by this PR, mechanically preserved):** 
`queuedStart` is read from `PROPERTY_EXCHANGE_QUEUED_TIMESTAMP`, which is set 
to `TimeSource.nanoTime()` (nanoseconds) at line 196 in 
`processAsynchronously`. Subtracting it from `TimeSource.currentTimeMillis()` 
(milliseconds) produces a nonsensical result — `queuedTime` will be billions of 
milliseconds. Worth fixing in a follow-up: either store `currentTimeMillis()` 
at the timestamp property, or use `nanoTime()` for both sides of the 
subtraction and convert to ms.



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