From: msho at exabytes dot com
Operating system: Windows 2003
PHP version: 4.4.2
PHP Bug Type: IIS related
Bug description: PHP MEM and CPU resource management
Description:
------------
When adding PHP Engine mapping to IIS with "Verify that file exists"
option turned off, IIS will execute PHP engine to serve the requested php
file (not matter the file is exist or not exist).
PHP loaded with certain amount of memory usage which will be in deep
trouble if there is a lot of request to an invalid files via http.
To have this issue reproduce:
1. Mapped the PHP engine to IIS with "Verify that file exists" option
turned off.
2. Setup a normal php script that query on the webserver for an invalid
php file via http infinitely, for example:
http://<server_ip>//<invalid_path>
3. Run multiple (more than 100) instances at a time for the same script.
The sample script on requesting the script infinitely can be retrieved on
the "Reproduce code" section.
Reproduce code:
---------------
<?
while(1)
{
$request_url = "<enter_the_url_here>"; //eg.
http://<server_ip>//<invalid_path>
$temp = file($request_url);
unset($temp);
}
?>
Expected result:
----------------
You will see the CPU usage and MEM usage will shoot on the Windows
webserver.
Actual result:
--------------
It will be great if PHP can reduce the CPU and MEM usage when dealing with
the invalid file request via http.
--
Edit bug report at http://bugs.php.net/?id=37591&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=37591&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=37591&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=37591&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=37591&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=37591&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=37591&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=37591&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=37591&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=37591&r=support
Expected behavior: http://bugs.php.net/fix.php?id=37591&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=37591&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=37591&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=37591&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=37591&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=37591&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=37591&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=37591&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=37591&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=37591&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=37591&r=mysqlcfg
