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

"Renaud Drousies" <[email protected]>
Newsgroups gmane.comp.web.fastcgi.devel
Message-ID <[email protected]>
Actually I am requesting the page 3 times in 3 different browser tabs

On Mar 17 octobre 2006 16:36, Ben Chabot a écrit :
> 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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>> http://fastcgi.com/fastcgi-developers/
>
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>


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