Bug #63666 [NEW]: Poor date() performance [PATCH]
| From: | njaguar at gmail dot com | Date: | Sun, 02 Dec 2012 00:50:21 +0000 |
| Subject: | Bug #63666 [NEW]: Poor date() performance [PATCH] | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-175065@lists.php.net to get a copy of this message | ||
From: njaguar at gmail dot com
Operating system: any
PHP version: 5.4.9
Package: Performance problem
Bug Type: Bug
Bug description:Poor date() performance [PATCH]
Description:
------------
Full info here:
http://news.php.net/php.internals/64127
4.4.9 on old machine vs 5.4.9 on new machine:
date : 1.856 sec date : 2.111 sec
after patch (~20% performance increase):
date: 1.763 sec
* new machine is 2 to 200x faster than old machine, see link above for more
details
Test script:
---------------
// common date output format
// use any preferred timing methods either within php, or externally time
execution of the script (eg, microtime(), etc) -- the former will be more
accurate at isolating the date() function, overall
$c = 1000000;
for($i=0; $i<$c; $i++) date('F j, Y, g:i a', $now);
Expected result:
----------------
worse performance on stock builds, better when patch is applied -- still
considerably slower than 4.4.9 version of date() and related, but is an
improvement
Actual result:
--------------
By moving the frequently used iso fetching function into the switch
statement, this prevents an otherwise unnecessary step for other more
common usages of date formatting.
--
Edit bug report at https://bugs.php.net/bug.php?id=63666&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=63666&r=trysnapshot54
Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=63666&r=trysnapshot53
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=63666&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=63666&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=63666&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=63666&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=63666&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=63666&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=63666&r=support
Expected behavior: https://bugs.php.net/fix.php?id=63666&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=63666&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=63666&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=63666&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=63666&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=63666&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=63666&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=63666&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=63666&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=63666&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=63666&r=mysqlcfg