Bug #55473 [Com]: mysql_pconnect leaks file descriptors on reconnect

Edit report at https://bugs.php.net/bug.php?id=55473&edit=1 ID: 55473 Comment by: laruence@php.net Reported by: littlesavage at rambler dot ru Summary: mysql_pconnect leaks file descriptors on reconnect Status: Open Type: Bug Package: MySQL related PHP Version: 5.3.7 Block user comment: N Private report: N New Comment: I can't reproduce this bug in PHP-5.3.7 on Linux Redhat(64-bit). What's your OS type? Previous Comments: ------------------------------------------------------------------------ [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