#30194 [NEW]: Mysqli Prepared Statements work very slow when CLOB\BLOB is in result set

From: phoeniks2k at mail dot ru Operating system: All PHP version: 5.0.1 PHP Bug Type: Performance problem Bug description: Mysqli Prepared Statements work very slow when CLOB\BLOB is in result set Description: ------------ If result set has clob\blob fields, retrieving data is VERY slow. Query "SELECT SQL_NO_CACHE id, xml_clob FROM some_table WHERE id = 1" executes 1000 times for about 0.4 seconds on my server; But this query rewriten with statement execs 20 time for 6(!) seconds!!! Every time i call: exec, store result, fetch, free_result P.S. SQL_NO_CACHE is used for clean noncached result times Expected result: ---------------- STMT performance higher then normal query performance -- Edit bug report at http://bugs.php.net/?id=30194&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30194&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=30194&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=30194&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=30194&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=30194&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=30194&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=30194&r=needscript Try newer version: http://bugs.php.net/fix.php?id=30194&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=30194&r=support Expected behavior: http://bugs.php.net/fix.php?id=30194&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=30194&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=30194&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=30194&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30194&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=30194&r=dst IIS Stability: http://bugs.php.net/fix.php?id=30194&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=30194&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=30194&r=float MySQL Configuration Error: http://bugs.php.net/fix.php?id=30194&r=mysqlcfg