Re: PHP slowness

[b1nary Developement Team <dev@xxxxxxxxxxxxxxxxx>]

Hi there, just for testings sake, you should get a script that figures 
out the page generation time for a php script... As luck would have it, 
I made a class for this not too long ago.  give this a whirl.

First, create a php script with this in it...
<?php
   // CREATE THE CLASS
   class page_gen {
  
       // CLASS VARIABLES
       var $start_time;
       var $end_time;
       var $gen_time;
      
       // USER DEFINE VARIABLES
       var $color_good;
       var $color_fair;
       var $color_poor;
      
       // FIGURE OUT THE TIME AT THE BEGINNING OF THE PAGE
       function start() {
           $this->start_time = microtime();
       }
      
       // FIGURE OUT THE TIME AT THE END OF THE PAGE
       function stop() {
           $this->end_time = microtime();
       }
      
       // CALCULATE THE DIFFERENCE BETWEEN THE BEGINNNG AND THE END AND 
COLOR CODE THE RESULT
       function gen() {
           $this->gen_time = $this->end_time - $this->start_time;
           if (!isset($this->color_good)) {
               $this->color_good = "green";
           }
           if (!isset($this->color_fair)) {
               $this->color_fair = "yellow";
           }
           if (!isset($this->color_poor)) {
               $this->color_poor = "red";
           }
           if ($this->gen_time <= 0.0999999999) {
               $this->gen_time = "<span style=\"color: 
$this->color_good;\">$this->gen_time</span>";
           } elseif ($this->gen_time <= 0.999999999 && $this->gen_time 
> 0.0999999999) {
               $this->gen_time = "<span style=\"color: 
$this->color_fair;\">$this->gen_time</span>";
           } elseif ($this->gen_time <= 9.99999999 && $this->gen_time > 
0.999999999) {
               $this->gen_time = "<span style=\"color: 
$this->color_poor;\">$this->gen_time</span>";
           }
           print("<span style=\"font-weight: 
bold;\">$this->gen_time</span> seconds");
       }
   }
?>

Now, put this code at the top of the page you want to time.

<?php
   require("cls.pagegen.php");   // or whatever you named it
   $gentime = new page_gen();
   $gentime->start();
?>

Where you want to stop timing (usually at the bottom).

<?php
   $gentime->stop();
?>

Now to display the time, simply go

<?php
   $gentime->gen();
?>

It will color code it for you and everything, give it a whirl and let us 
know what it tells you.

Gerard wrote:

> Hello people,
>
> Recently, one of my webservers became rather slow. At first we thought it
> was the MySQL backend, but when logged in on MySQL using the command line
> tool over SSH, it runs as smooth as ever.
> Static content (normal html pages) also load without delay. It seems that
> the bottleneck is PHP itself.
> For the sake of comparison, I created 2 test pages:
>
> http://www.debuginc.com/test.html
> http://www.debuginc.com/test.php
>
> Everyone I asked says that the PHP page takes over 5 seconds to load while
> the HTML one instantly displays. The only code in the PHP page is <? echo
> 'hello world'; ?>. No MySQL stuff, so that eliminates the initial idea of
> MySQL causing the slowness.
>
> Nevertheless, it IS slow and I have no idea why or where to start looking.
> The phpinfo() can be found on www.debuginc.com/info.php. Any help or hints
> are highly appreciated.
>
> Another interesting note; this problem started a couple of days ago without
> any changes in the config or anything. At first I upped the amount of
> connections Apache would accept, but it soon turned out that was not the
> problem.
>
> Thanks,
> - Gerard
>
>  

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