Hello, Where i can found some info about AIO? I need to know how work and what is this feature in LS. Today, after upgrade to 4.1.13 i see these messages in error_log 2012-07-11 10:42:32.223 [INFO] [:53184-0] Pending AIO operation, recycle later... 2012-07-11 10:42:32.550 [INFO] [:53184-0] Pending AIO finished, recycle connection. I use LS v4.1.13. Waiting for your reply.