PHP4 vs PHP5 Beta 3 : memory usage View as Markdown

 I tried your script and couldn't reproduce such big numbers.
 Plus the memory usage leveled to 54152 bytes after some requests
 to each apache child. This was with using the latest CVS checkout
 of PHP 5.
 
 --Jani
 

Hi all,

I wanted to compare the memory usage of PHP4 and PHP5 (Beta 3) on a same
script. And i observed a strange problem.

So, here is a small test (if you want to reproduce it).

First, i write a small and short php script.
It just make a simple memory_get_usage() (with a number_format for the
presentation :p) :

<?php
print number_format(memory_get_usage(), 0, ',', ' ').' bytes';
?>

Second, i write a small shell script to call 100 times my php script by
HTTP. I used lynx. And i stored the result in a logfile. Here is the code :

#!/bin/sh
for (( i = 1; i <= 100; i++ )); do
lynx -dump http://localhost/armel/mem.php >> php.log
done

And here is the result...

---

With PHP4.3.4 (axps module) :

armel@omble:~$ cat php.log
27 232 bytes

27 232 bytes
...
...
27 232 bytes

27 232 bytes

With PHP5 Beta3 (apxs module too) :

armel@ombre:~$ cat php.log
211 952 bytes

153 784 bytes

108 184 bytes

157 680 bytes

94 376 bytes

107 392 bytes

446 888 bytes

558 712 bytes
...
...
107 392 bytes

446 888 bytes

557 656 bytes

211 952 bytes

153 784 bytes

108 184 bytes

157 680 bytes

The result under PHP4 is logical. But under PHP5 Beta 3, i think it's very
very strange. What do you think about this ? Any idea ? Maybe my script can
even be a good system of random pulling :))

Regards (and happy new year),

Armel.