From: [EMAIL PROTECTED] Operating system: Windows 2000 Server PHP version: 4.1.1 PHP Bug Type: Performance problem Bug description: Process exec() is slow from webserver - running from shell is ok ...
Summary: Running a PHP script which calls exec() from withing Apache runs terribly slow or times out. Running same from the command prompt returns in seconds. Details: I (and other NT users) have run into performance issues running PHP 4.1.1 with the NETPBM distribution. When running thumbnailing operations via. webpages, the performance (throughtput) of the system is dismal. Running the same PHP script manually from the command shell completes operations in under a second which usually timeout when executed from a webpage. A full "ready to run" repro of this problem is available via. a small ZIP file at http://www.green-bean.com/bugfiles/slowrepro.zip. This contains the required NETPBM files. If these are already installed on your system, you can run the script below with slight modifications. Thanks, Nigel. ---- Repro: <? // Full repro kit including executables available from http://www.green-bean.com/bugfiles/slowrepro.zip // // Location of your NETPBM distribution // We're using http://prdownloads.sourceforge.net/gallery/netpbm1.1-gallery1.0-win32.tgz // $pbmroot = "netpbm"; // JPG input file (from http://www.green-bean.com/DallasChristmasHat.jpg) $file = "DallasChristmasHat.jpg"; function fs_exec($cmd, &$results, &$status, &$time) { // We can't redirect stderr with Windows. Hope that we won't need to. $time_st = time(); $x = exec("$cmd", $results, $status); $time = time() - $time_st; } $quiet = "-quiet"; // JPEG to PNM $cmd_to_pnm = "$pbmroot\\jpegtopnm $quiet $file > out\\$file.pnm"; print "<br>Exec: $cmd_to_pnm\n"; fs_exec($cmd_to_pnm, $results, $status, $elapsed); print "<br>Elapsed: $elapsed secs\n<br>Status: $status"; // PNM to scaled PNM $cmd_scale_pnm = "$pbmroot\\pnmscale $quiet -xysize 150 150 out\\$file.pnm > out\\$file.scale.pnm"; print "<br>Exec: $cmd_scale_pnm\n"; fs_exec($cmd_scale_pnm, $results, $status, $elapsed); print "<br>Elapsed: $elapsed secs\n<br>Status: $status"; // PNM scaled to JPG $cmd_to_jpg = "$pbmroot\\ppmtojpeg $quiet out\\$file.scale.pnm --quality=150 > out\\tn_$file"; print "<br>Exec: $cmd_to_jpg\n"; fs_exec($cmd_to_jpg, $results, $status, $elapsed); print "<br>Elapsed: $elapsed secs\n<br>Status: $status"; ?> -- Edit bug report at http://bugs.php.net/?id=15746&edit=1 -- Fixed in CVS: http://bugs.php.net/fix.php?id=15746&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=15746&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=15746&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=15746&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=15746&r=support Expected behavior: http://bugs.php.net/fix.php?id=15746&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=15746&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=15746&r=submittedtwice
