Re: FastCGI + PHP + APC on Apache2 - Concurrency issues

What method are you using to execute the script three times?

Because, afaik, an apache child can only handle one request at a time.  So
if it's using the same child (sort of like how keepalives work) and sending
the same request to the same apache child, that would explain it, I believe.

On 9:36:22 am 10/17/06 "Renaud Drousies" <[email protected]> wrote:
> Hello,
>
> I am not sure this is actually a FastCGI, Apache2 or PHP configuration
> issue, but here is my problem:
>
> I have the current configuration in my apache2:
>
> Alias /cgi-bin/ /www/cgi-bin/
> FastCgiServer /www/cgi-bin/php-fcgi -processes 1 -idle-timeout 180
> -socket /tmp/fastcgi.socket
> AddType application/x-httpd-fastphp .php
> Action application/x-httpd-fastphp /cgi-bin/php-fcgi
>
> And that wrapper:
>
> #!/bin/sh
> PHP_FCGI_CHILDREN=4
> export PHP_FCGI_CHILDREN
> PHP_FCGI_MAX_REQUESTS=500
> export PHP_FCGI_MAX_REQUESTS
> exec /usr/local/bin/php
>
>
> When I start apache, this gives me the correct number of processes:
>
> www-data  3422  3421  0 04:59 ?        00:00:00  \_ /usr/sbin/fcgi-pm
> -k start -DSSL
> www-data  3423  3422  0 04:59 ?        00:00:00  |   \_
> /usr/local/bin/php www-data  3424  3423  0 04:59 ?        00:00:00  |
> \_ /usr/local/bin/php
> www-data  3425  3423  0 04:59 ?        00:00:00  |       \_
> /usr/local/bin/php
> www-data  3426  3423  0 04:59 ?        00:00:00  |       \_
> /usr/local/bin/php
> www-data  3427  3423  0 04:59 ?        00:00:00  |       \_
> /usr/local/bin/php
> www-data  3428  3421  0 04:59 ?        00:00:00  \_ /usr/sbin/apache2
> -k start -DSSL
> www-data  3429  3421  0 04:59 ?        00:00:00  \_ /usr/sbin/apache2
> -k start -DSSL
> www-data  3430  3421  0 04:59 ?        00:00:00  \_ /usr/sbin/apache2
> -k start -DSSL
> www-data  3431  3421  0 04:59 ?        00:00:00  \_ /usr/sbin/apache2
> -k start -DSSL
> www-data  3432  3421  0 04:59 ?        00:00:00  \_ /usr/sbin/apache2
> -k start -DSSL
> www-data  3434  3421  0 04:59 ?        00:00:00  \_ /usr/sbin/apache2
> -k start -DSSL
>
>
> I am using only 1 FastCgiServer process because it is required to
> benefit from the APC cache between the different php handlers. The
> problem is that I cannot seem to handle more than 1 php request at a
> time.
>
> This is a script I am using to test that:
>
> print date("Y-m-d H:i:s"); print "<br />";
> sleep(10);
> print date("Y-m-d H:i:s"); print "<br />";
>
> If I request that script 3 times, within the same second, it returns
> me:
>
> 2006-10-17 05:02:35
> 2006-10-17 05:02:45
>
> 2006-10-17 05:02:45
> 2006-10-17 05:02:55
>
> 2006-10-17 05:02:55
> 2006-10-17 05:03:05
>
> It waits for the previous script to be done to start the next
> request. Am I doing something wrong in my configuration? I would
> expect my server to be able to handle more thant 1 request at a time
> :-)
>
> Actually this acts the same if I increase the FastCgiServer's
> -process...
>
> Thanks!
>
> Regards,
> Renaud
>
>
>
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