Edit report at https://bugs.php.net/bug.php?id=55473&edit=1
ID: 55473 Comment by: larue...@php.net Reported by: littlesavage at rambler dot ru Summary: mysql_pconnect leaks file descriptors on reconnect Status: Analyzed Type: Bug Package: MySQL related PHP Version: 5.3.7 Block user comment: N Private report: N New Comment: and the reason for why this cleanup cound not be done in dtor, is that in dtor, it also clean the content, option, which should not free at that memont, and that is not a dtor time in theory. Previous Comments: ------------------------------------------------------------------------ [2011-08-22 08:35:23] larue...@php.net I found this is due to, when doing a reconnect, mysqlnd_connect didn't free the stream. I have submitted a patch, but need georg&andrey&ulf to review first.. ------------------------------------------------------------------------ [2011-08-22 08:33:34] larue...@php.net The following patch has been added/updated: Patch Name: Bug55473.diff Revision: 1314002014 URL: https://bugs.php.net/patch-display.php?bug=55473&patch=Bug55473.diff&revision=1314002014 ------------------------------------------------------------------------ [2011-08-22 06:20:46] littlesavage at rambler dot ru I have found this bug on Debian squeeze (x86_64), php PHP 5.3.6-6~dotdeb.1 with Suhosin-Patch, mysql 5.1.58. Then i repeat it on FreeBSD 9, php 5.3.7 with Suhosin-Patch, mysql 5.5.12. On FreeBSD i have found that this bug reproducable only when i use mysqlnd native driver. Everything work as expected with standart mysql driver. ------------------------------------------------------------------------ [2011-08-22 03:05:27] larue...@php.net I can't reproduce this bug in PHP-5.3.7 on Linux Redhat(64-bit). What's your OS type? ------------------------------------------------------------------------ [2011-08-21 10:52:44] littlesavage at rambler dot ru Description: ------------ Whem Mysql closes created by mysql_pconnect() peristent connection, file descriptor lefts opened and is never reused. I have a server that stops working due to opened file descriptors limit. Test script: --------------- <?php function connect($passwd) { $conn = mysql_pconnect('localhost:3306','root', $passwd); if (!$conn) die(mysql_error()."\n"); mysql_query("set wait_timeout=5", $conn); return $conn; } $passwd = $argv[1]; $conn = connect($passwd); for($i=0;$i<10;$i++) { /* wait while mysql closes connection */ sleep(6); if (!mysql_ping($conn)) { echo "reconnect\n"; $conn = connect($passwd); } $r = mysql_query('select 1', $conn); $error = $r ? 'OK' : mysql_error(); $opened_files = trim(exec("lsof -np " . getmypid() . " | wc -l")); echo "$error. opened files: $opened_files\n"; } ?> Expected result: ---------------- $ php ./test.php reconnect OK. opened files: 76 reconnect OK. opened files: 76 reconnect OK. opened files: 76 reconnect OK. opened files: 76 ... Actual result: -------------- $ php ./test.php reconnect OK. opened files: 76 reconnect OK. opened files: 77 reconnect OK. opened files: 78 reconnect OK. opened files: 79 ... ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=55473&edit=1
