From: six at aegis-corp dot org
Operating system: linux 2.4
PHP version: 5.1.0RC1
PHP Bug Type: Date/time related
Bug description: performance problem with date()
Description:
------------
performance of the date() function has taken a huge hit between PHP 5.0
and 5.1. i believe this is because of an unneeded syscall when a second
argument is given.
Reproduce code:
---------------
<?
for ($a = 0; $a < 100000; $a++) date("Y-m-d H:i:s", $a);
?>
Expected result:
----------------
time /usr/local/bin/php-cli-5.0.4 datetest.php
real 0m2.022s
user 0m1.910s
sys 0m0.000s
Actual result:
--------------
time /usr/local/bin/php-cli-5.1.0RC1 datetest.php
real 0m10.001s
user 0m8.120s
sys 0m0.130s
5.1.0 takes more than 4x the time to complete than 5.0.4
with an strace, I can see that 5.1.0RC1 makes one (probably unneeded)
time() syscall per call to date(), which 5.0.4 does not
--
Edit bug report at http://bugs.php.net/?id=34700&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=34700&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=34700&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=34700&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=34700&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=34700&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=34700&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=34700&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=34700&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=34700&r=support
Expected behavior: http://bugs.php.net/fix.php?id=34700&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=34700&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=34700&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=34700&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=34700&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=34700&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=34700&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=34700&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=34700&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=34700&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=34700&r=mysqlcfg
