event.xml doc: update to latest improvements
@@ -102,6 +102,13 @@ of the <directive>AsyncRequestWorkerFactor</directive>.</p>
<p>These improvements are valid for both HTTP/HTTPS connections.</p>
+ <p>The above connection states are managed by the listener thread via dedicated queues, that up to 2.4.27 were checked every 100ms
+ to find which connections hit timeout settings like <directive module="mpm_common">Timeout</directive> and
+ <directive module="core">KeepAliveTimeout</directive>. This was a simple and efficient solution, but it presented a downside: the pollset was
+ forcing a wake-up of the listener thread even if there was no need (for example because completely idle), wasting resources. From 2.4.27
+ these queues are completely managed via an event based logic, not relying anymore on active polling.
+ Resource constrained environments, like embedded servers, may benefit from this improvement.</p>
+
</section>
<section id="graceful-close"><title>Graceful process termination and Scoreboard usage</title>
