Req #72066 [Opn->Csd]: Lack of TCP_NODELAY causes sockets to be horribly slow

Edit report at https://bugs.php.net/bug.php?id=72066&edit=1 ID: 72066 Updated by: krakjoe@php.net Reported by: slawek1211 at gmail dot com Summary: Lack of TCP_NODELAY causes sockets to be horribly slow -Status: Open +Status: Closed Type: Feature/Change Request Package: Streams related Operating System: Linux, all flavours PHP Version: 7.0.5 -Assigned To: +Assigned To: krakjoe Block user comment: N Private report: N New Comment: socket_import_stream should do the trick :) Previous Comments: ------------------------------------------------------------------------ [2016-04-20 20:24:44] slawek1211 at gmail dot com Description: ------------ On loopback interfaces, where MTU is set to 65536 on modern linux flavours, lack of support to open persistent, nodelay sockets makes fast, 2-way, local communication impossible for small packets (15-30kb) due to very high latency. While pfsockopen cannot be set to TCP_NODELAY mode, sockopen doesn't support persistency, so it's like nothing supports all features needed for fast 2-way communication. Expected result: ---------------- Ability to set TCP_NODELAY on pfsockopen, or some function to access underlying socket, so this option could be set using socket_set_option Actual result: -------------- Lack of TCP_NODELAY support results in a situation that sending 20kb of data using loopback with high MTU could take 30-40ms. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=72066&edit=1