diff --git a/index.php b/index.php
index 750dc28..03c4e9a 100644
--- a/index.php
+++ b/index.php
@@ -20,3 +20,5 @@
 $response->send();
 
 $kernel->terminate($request, $response);
+
+file_put_contents('/tmp/mem.txt', format_size(memory_get_peak_usage(TRUE)) . "\n", FILE_APPEND);