Re: fastcgi+php=lots of 500 errors ?

On Wednesday, March 02, 2005 10:40 PM CET,
Jason Pump <JPump-HbNbuK1M3AseIZ0/[email protected]> wrote:

> What OS are you running on?
>

Linux kernel 2.6.10.

> Have you checked that PHP is not running out of memory, or modifying
> php.ini to allow more memory for the process to see how that effects
> the situation?
>

Yes, and it's not a memory problem. I finally solved the problem with 
mod_fcgid.

I think the problem was the timeout in the communication between mod_fastcgi 
and the php process. In the mod_fcgid, i got the IPCCommTimeout variable 
which has the desired effect (not returning a 500 when php take over 3 
seconds to respond). I've note found the same variable in mod_fastcgi.

What about adding this directive in fastcgi ?

In the next weeks, i will certainly attempt to code a fastcgi module 
designed for use with php and minimal configuration (but with the tuning 
stuff), inspired on the fastcgi and mod_fcgid code. I'll let know if this 
project becomes reality :)

So using mod_fcgid (+a suexec patch for my case) seems to work properly with 
php (with the very useful "wrapper" function): zero "500" errors since i've 
passed to this module.

Hope this maybe helps someone,

-- 
Gabriel Barazer <gabriel-G2fI/[email protected]>
REAGI

>> -----Original Message-----
>> From:
>> fastcgi-developers-bounces+jpump=looksmart.net-xGejAJT2w6yOE5Ap4OspEtHuzzzSOjJt@public.gmane.org
>> [mailto:fastcgi-developers-bounces+jpump=looksmart.net-xGejAJT2w6yOE5Ap4OspEv8+0UxHXcjY@public.gmane.org
>> et]On Behalf Of Gabriel Barazer
>> Sent: Monday, February 28, 2005 12:26 PM
>> To: Simon; fastcgi-developers-xGejAJT2w6yOE5Ap4OspEtHuzzzSOjJt@public.gmane.org
>> Subject: Re: [FASTCGI] fastcgi+php=lots of 500 errors ?
>>
>>
>> On Monday, February 28, 2005 9:17 PM CET,
>> Simon <[email protected]> wrote:
>>
>>> Is that the only error you see in your error log? when you see
>>> 200req a sec is that all PHP? is it 200req/sec per server or on all
>>> 3?
>>>
>>
>> excepted the normal info messages from fastcgi such as:
>> [Mon Feb 28 21:20:09 2005] [warn] FastCGI: (dynamic) server
>> "/usr/local/bin/php-fcgi/php.fcgi" (pid 31004) terminated by calling
>> exit with status '0'
>>
>> or
>>
>> [Mon Feb 28 21:20:09 2005] [warn] FastCGI: (dynamic) server
>> "/usr/local/bin/php-fcgi/php.fcgi" (pid 31417) termination signaled
>>
>>
>> or even
>>
>> [Mon Feb 28 21:20:09 2005] [warn] FastCGI: (dynamic) server
>> "/usr/local/bin/php-fcgi/php.fcgi" (uid 522, gid 100) started (pid
>> 31533)
>>
>> which are normal info message about fastcgi activity, yes , this
>> is the only
>> real errors.
>>
>> The servers are 3 pentium 4 3.2Ghz and it is 200req/s on all 3. If
>> they weren't 500's , the configuration was clean : lesser than load
>> average of 1,
>> and a maximum of 400req/s capacity on all 3 servers (benchmark
>> results, and
>> a load not higher than 5).
>>
>> No other debugging information... I think i'll become crazy soon...
>>
>> BTW: i tested with the "stable" fastcgi version (2.4.2), and it
>> produces the
>> same result.
>>
>> --
>> Gabriel Barazer <gabriel-G2fI/[email protected]>
>> REAGI
>>
>>>
>>> On Mon, 28 Feb 2005 19:26:06 +0100, Gabriel Barazer wrote:
>>>
>>>> Hi,
>>>>
>>>> When using php with mod_fastcgi , i get a HUGE number of 500 errors
>>>> and this line in the error log:
>>>> FastCGI: incomplete headers (0 bytes) received from server
>>>> "/usr/local/bin/php-fcgi/php.fcgi"
>>>>
>>>> I have a moderated traffic (~200req per second on 3 servers), and
>>>> these 500's occurs 2-3 times per second on each server.
>>>>
>>>> My actual config is the same on both servers:
>>>> ---
>>>> FastCgiWrapper On
>>>> FastCgiConfig -gainValue 0.8 -killInterval 5 -listen-queue-depth
>>>> 512 -maxClassProcesses 96 -maxProcesses 192 -multiThreshold
>>>> 60 -singleThreshold 1 -startDelay 1 -updateInterval 5
>>>> ScriptAlias /fcgi-bin/ "/usr/local/bin/php-fcgi/"
>>>> <Location /fcgi-bin/>
>>>>        Options ExecCGI
>>>>        SetHandler fastcgi-script
>>>> </Location>
>>>>
>>>> AddHandler php-script .php .inc .pinc .phtml .php3 .php4
>>>> Action php-script /fcgi-bin/php.fcgi
>>>> ---
>>>>
>>>> It appears that if i raise the killinterval AND updateinterval, the
>>>> number of errors decrease after a restart of apache, but as the
>>>> uptime grows, the number of errors grows too...
>>>>
>>>> i haven't succeed to reproduce this bug as it seems to be very
>>>> random (but it happens very more often when the traffic increases)
>>>>
>>>> Anyone have an idea about this *very* annoying effect ?
>>>>
>>>> Oh, i forgot to mention the software versions:
>>>> apache 2.0.53
>>>> php 4.3.10
>>>> mod_fastcgi-snap-0404142202
>>>>
>>>> --
>>>> Gabriel Barazer <gabriel-G2fI/[email protected]>
>>>> REAGI
>>
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