add database optimization settings

config/app.php.txt

@@ -384,6 +384,13 @@ define('CLEAN_PAGE_BAN_SECONDS_OFFSET', 60*60*24*30);
  */
 define('CLEAN_PAGE_DESCRIPTION_OFFSET', 60*60*24*30*12*10);
 
+/*
+ * Run database tables optimization
+ *
+ * When enabled - may reduce disk space usage but requires enough of RAM
+ *
+ */
+define('CLEAN_DB_TABLES_OPTIMIZATION', true);
 
 // API settings
 

crontab/cleaner.php

@@ -253,7 +253,10 @@ try {
   $db->commit();
 
   // Optimize tables
-  $db->optimize();
+  if (CLEAN_DB_TABLES_OPTIMIZATION) {
+
+    $db->optimize();
+  }
 
 } catch(Exception $e) {