#32854 [NEW]: mssql_pconnect fails under load and doesn't recover

From: gerritgiliomee at hotmail dot com Operating system: Windows 2000 sp4 PHP version: 5.0.4 PHP Bug Type: MSSQL related Bug description: mssql_pconnect fails under load and doesn't recover Description: ------------ Using mssql_pconnect to connect to a MS SQL2000 server on another box. Everything works a treat until I put some load on. When I go above a certain threshhold, e.g. using Apache Benchmark, 20 concurrent users, 500 requests, mssql_pconnect fails with this error: "Warning: mssql_pconnect() [function.mssql-pconnect]: Unable to connect to server: servername" This is understandable as things will break above a certain point, however, after this happens, mssql_pconnect seems to have hung, even if I change the connection details, or try using mssql_connect, I still get the same error. The only thing that resolves it is restarting IIS. Using Win2K (sp4), IIS5, MS SQL 200 (sp2). PS: I have made sure I'm using the right version of ntwdblib.dll. It's also worth noting that my phpinfo() reports "Library Version: 7.0" instead of the presumed 8.0. Not sure if this is connected to the SQL version though. I've toggled around and have these mssql settings in my php.ini [MSSQL] ; Allow or prevent persistent links. mssql.allow_persistent = On ; Maximum number of persistent links. -1 means no limit. mssql.max_persistent = 100 ; Maximum number of links (persistent+non persistent). -1 means no limit. mssql.max_links = 100 ; Minimum error severity to display. mssql.min_error_severity = 10 ; Minimum message severity to display. mssql.min_message_severity = 10 ; Compatability mode with old versions of PHP 3.0. mssql.compatability_mode = Off ; Connect timeout mssql.connect_timeout = 5 ; Query timeout mssql.timeout = 60 ; Valid range 0 - 2147483647. Default = 4096. mssql.textlimit = 4096 ; Valid range 0 - 2147483647. Default = 4096. mssql.textsize = 4096 ; Limits the number of records in each batch. 0 = all records in one batch. mssql.batchsize = 0 ; Specify how datetime and datetim4 columns are returned ; On => Returns data converted to SQL server settings ; Off => Returns values as YYYY-MM-DD hh:mm:ss ;DEV - used to be completely commented out mssql.datetimeconvert = Off ; Use NT authentication when connecting to the server mssql.secure_connection = Off ; Specify max number of processes. Default = 25 mssql.max_procs = 25 Any help will be much appreciated. -- Edit bug report at http://bugs.php.net/?id=32854&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=32854&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=32854&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=32854&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=32854&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=32854&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=32854&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=32854&r=needscript Try newer version: http://bugs.php.net/fix.php?id=32854&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=32854&r=support Expected behavior: http://bugs.php.net/fix.php?id=32854&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=32854&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=32854&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=32854&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=32854&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=32854&r=dst IIS Stability: http://bugs.php.net/fix.php?id=32854&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=32854&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=32854&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=32854&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=32854&r=mysqlcfg