ID: 14263
Updated by: derick
Reported By: [EMAIL PROTECTED]
Status: Open
Old Bug Type: Performance problem
Bug Type: Feature/Change Request
Operating System: all
PHP Version: 4.0.6
New Comment:
Making it a feature request, as it's not a "bug".
Previous Comments:
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[2001-11-28 04:00:08] [EMAIL PROTECTED]
If compiled in standalone cgi mode, when the script exits, php only needs to free
resources, not other arrays or strings or items (unless we ever support object
destructors).
It can take a LONG time to free a hundred thousand or so elements in nested arrays, 4
or 5 times longer than it takes to create then.
See these threads in phpdev mailing list:
Re: [PHP-DEV] maybe serious error in RC3 memory manager
RE: [PHP-DEV] CGI quick cleanup
Sample code:
Note how long it takes to exit after finishing.
#! /usr/bin/php -q
<?php
ini_Set("max_execution_time","0");
ini_Set("memory_limit","500M");
class thingy {
function thingy($c) {
if ($c>0) $this->ref=&new thingy($c-1);
}
}
$stash=array();
$max=500000;
$start=time();
for($i=0;$i<$max;$i++) {
$r=rand(0,300);
$stash[$r][]=&new thingy(rand(0,10));
echo "\rUse: ".floor($i/$max*100)."% ";
}
echo "\n";
$mid=time();
$max=count($stash);
$c=0;
foreach(array_keys($stash) as $key) {
unset($stash[$key]);
$c++;
echo "\rFree: ".floor($c/$max*100)."% ";
}
unset($stash);
echo "\n";
$done=time();
print "Use: ".($mid-$start)."\n";
print "Free: ".($done-$mid)."\n";
?>
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Edit this bug report at http://bugs.php.net/?id=14263&edit=1
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