Edit report at http://bugs.php.net/bug.php?id=54250&edit=1
ID: 54250 Updated by: [email protected] Reported by: maciej at wiercinski dot net Summary: date_default_timezone_set stat()'s whole /usr/share/zoneinfo upon first call -Status: Feedback +Status: Bogus Type: Bug Package: Date/time related Operating System: Linux 2.6 PHP Version: 5.3.5 Block user comment: N Private report: N New Comment: Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Due to the volume of reports we can not explain in detail here why your report is not a bug. The support channels will be able to provide an explanation for you. Thank you for your interest in PHP. Complain at your distribution for messing it up. Previous Comments: ------------------------------------------------------------------------ [2011-03-14 19:27:58] [email protected] I think this is going to make Derick's head explode :) This is likely due to the fact that Ubuntu patches PHP to use the system timezone info as opposed to the default bundled data. If you build a clean version of PHP on Ubuntu using the code we actually distribute, I think you will find that the problem goes away. ------------------------------------------------------------------------ [2011-03-14 19:11:29] maciej at wiercinski dot net Description: ------------ Upon first call to date_default_timezone_set, PHP syscalls stat() on all the files in /usr/share/zoneinfo. It can be easily checked by running: $ strace -s 100 -r php -n -r"date_default_timezone_set('GMT');" 2>&1 | grep zoneinfo On average Debian/Ubuntu system it accounts for little over 600 syscalls. Reproduced on: PHP 5.3.5-1 with Suhosin-Patch (cli) (built: Feb 19 2011 01:57:59) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies with Xdebug v2.1.0, Copyright (c) 2002-2010, by Derick Rethans with Suhosin v0.9.29, Copyright (c) 2007, by SektionEins GmbH PHP 5.2.6-1+lenny9 with Suhosin-Patch 0.9.6.2 (cli) (built: Aug 4 2010 03:25:57) Copyright (c) 1997-2008 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies with Xdebug v2.0.3, Copyright (c) 2002-2007, by Derick Rethans PHP 5.3.2-1ubuntu4.7 with Suhosin-Patch (cli) (built: Jan 12 2011 18:36:08) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies with Xdebug v2.1.0, Copyright (c) 2002-2010, by Derick Rethans *Not* reproduced on: PHP 5.3.3-0.dotdeb.1 with Suhosin-Patch (cli) (built: Oct 1 2010 08:49:29) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies with Xdebug v2.1.0, Copyright (c) 2002-2010, by Derick Rethans with Suhosin v0.9.32.1, Copyright (c) 2007-2010, by SektionEins GmbH Test script: --------------- $ strace -s 100 -r php -n -r"date_default_timezone_set('GMT');" 2>&1 | grep zoneinfo | head -10 0.000190 open("/usr/share/zoneinfo/", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = 3 0.000046 stat64("/usr/share/zoneinfo//localtime", {st_mode=S_IFREG|0644, st_size=3661, ...}) = 0 0.000112 stat64("/usr/share/zoneinfo//Zulu", {st_mode=S_IFREG|0644, st_size=118, ...}) = 0 0.000101 stat64("/usr/share/zoneinfo//WET", {st_mode=S_IFREG|0644, st_size=1873, ...}) = 0 0.000100 stat64("/usr/share/zoneinfo//W-SU", {st_mode=S_IFREG|0644, st_size=2194, ...}) = 0 0.000098 stat64("/usr/share/zoneinfo//Universal", {st_mode=S_IFREG|0644, st_size=118, ...}) = 0 0.000101 stat64("/usr/share/zoneinfo//UTC", {st_mode=S_IFREG|0644, st_size=118, ...}) = 0 0.000099 stat64("/usr/share/zoneinfo//US", {st_mode=S_IFDIR|0755, st_size=352, ...}) = 0 0.000097 stat64("/usr/share/zoneinfo//UCT", {st_mode=S_IFREG|0644, st_size=118, ...}) = 0 0.000099 stat64("/usr/share/zoneinfo//Turkey", {st_mode=S_IFREG|0644, st_size=2721, ...}) = 0 $ strace -s 100 -r php -n -r"date_default_timezone_set('GMT');" 2>&1 | grep zoneinfo | wc -l 626 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=54250&edit=1
