#49996 [Asn->Fbk]: DateTimeZone::getTransitions performance drop

ID: 49996 Updated by: derick@php.net Reported By: dor at videocells dot com -Status: Assigned +Status: Feedback Bug Type: Performance problem Operating System: Centos 5.2 64 bit PHP Version: 5.3.0 Assigned To: derick New Comment: Are you using Centos' packages? Previous Comments: ------------------------------------------------------------------------ [2009-10-28 07:52:30] derick@php.net It's indeed quite a bit slower... not sure if this is a *bug* though, but will check it out. ------------------------------------------------------------------------ [2009-10-28 06:56:30] dor at videocells dot com I have two exact computers in terms of OS installation and apache/php configuration (except the php 5.3 against php 5.2.9) the average speed this function takes to run in php 5.2.9 is : float(0.015974044799805) float(0.0457763671875) float(0.045061111450195) float(0.65398216247559) float(0.92506408691406) float(0.70810317993164) float(0.19216537475586) float(0.32210350036621) float(0.73885917663574) float(0.16283988952637) float(0.94914436340332) float(0.62394142150879) float(0.25200843811035).... while on php 5.3 its : float(63.025951385498) float(62.762022018433) float(62.709093093872) float(63.004970550537) float(63.482046127319) float(63.012838363647) float(62.775135040283) float(62.896966934204) float(63.131093978882) float(63.91716003418) float(63.18211555481) .... its 60 times slower. can i somehow send a print screen, or attach the printouts of both computer's phpinfo() ? ------------------------------------------------------------------------ [2009-10-27 22:27:17] jani@php.net With this simplified and working (!) script I get exactly same results with PHP_5_2, PHP_5_3 and HEAD of today: <?php $timezoneArray = array ( "(GMT -12:00) International Date Line West" => "Etc/GMT+12", "(GMT -11:00) Midway Island, Samoa" => "Pacific/Midway", "(GMT -10:00) Hawaii" => "US/Hawaii", // many many more time zones... "(GMT +12:00) Auckland, Wellington" => "Pacific/Auckland", "(GMT +12:00) Fiji, Kamchatka, Marshall Is." => "Asia/Kamchatka", "(GMT +13:00) Nuku'alofa" => "Pacific/Tongatapu"); foreach ($timezoneArray as $TimezoneDescription => $TimezoneID) { $res = timezone_open($TimezoneID); if($res) { $start = microtime(true); $trans = $res->getTransitions(); $end = microtime(true); var_dump(1000 * ($end - $start)); } } ?> Now, where is the performance issue here? ------------------------------------------------------------------------ [2009-10-27 06:55:10] dor at videocells dot com <?php $timezoneArray = array ( "(GMT -12:00) International Date Line West" => "Etc/GMT+12", "(GMT -11:00) Midway Island, Samoa" => "Pacific/Midway", "(GMT -10:00) Hawaii" => "US/Hawaii", // many many more time zones... "(GMT +12:00) Auckland, Wellington" => "Pacific/Auckland", "(GMT +12:00) Fiji, Kamchatka, Marshall Is." => "Asia/Kamchatka", "(GMT +13:00) Nuku'alofa" => "Pacific/Tongatapu"); foreach ($timezoneArray as $TimezoneDescription => $TimezoneID) { $res = timezone_open($TimezoneID) if($res) { $TimeInTimezone = new DateTime ("now",$res) $microParts = explode(" ",microtime()); list($a,$b) = explode(".",$microParts[0]); echo "before : ".strftime('%Y%m%d-%H%M%S',time()).".".$b; //the following line takes alot of time : $trans = $res->getTransitions(); $microParts_2 = explode(" ",microtime()); list($c,$d) = explode(".",$microParts_2[0]); echo "before : ".strftime('%Y%m%d-%H%M%S',time()).".".$d; } } ------------------------------------------------------------------------ [2009-10-26 22:49:11] jani@php.net Thank you for this bug report. To properly diagnose the problem, we need a short but complete example script to be able to reproduce this bug ourselves. A proper reproducing script starts with <?php and ends with ?>, is max. 10-20 lines long and does not require any external resources such as databases, etc. If the script requires a database to demonstrate the issue, please make sure it creates all necessary tables, stored procedures etc. Please avoid embedding huge scripts into the report. And preferrably such which does not have several syntax errors and missing parts.. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/49996 -- Edit this bug report at http://bugs.php.net/?id=49996&edit=1