diff --git a/System/Pool/Timeout.php b/System/Pool/Timeout.php
index 23380dfe..d29ae649 100644
--- a/System/Pool/Timeout.php
+++ b/System/Pool/Timeout.php
@@ -39,10 +39,14 @@ trait Timeout
 	protected function flush($retain_number)
 	{
 		$channels = $this->getChannels();
+
+		$names = [];
 		foreach ($channels as $name => $channel) {
+			$names[] = $name;
 			$this->pop($channel, $name, $retain_number);
 		}
 		if ($retain_number == 0) {
+			$this->debug('release ' . implode(',', $names));
 			$this->debug('release Timer::tick');
 			Timer::clear($this->creates);
 			$this->creates = -1;