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Topic: Apache 2.4.3 + PHP 5.4.9 + MySQL 5.5.28 = random crashes

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Topic: Apache 2.4.3 + PHP 5.4.9 + MySQL 5.5.28 = random crashes

[UnLucky]

Hello,

I've crawled a lot but couldn't find yet a solution for my problems with Apache 2.4.3 + PHP 5.4.9 + MySQL 5.5.28 (x64) combo.

Problems:
- Apache crashes and restarts randomly in x minutes or hours.
In apache errors log:

[Steffen]

Almost sure this is a PHP issue:

Cannot initialize zend_mm storage [win32]
Parent: child process exited with status 255 -- Restarting

You can try a higher memory_limit in PHP.ini.

Think about to use mod_fcgid, then php errors do not push Apache down. It just starts an other PHP fcgid process and kills the faulty one.

[Smitty]

We had this problem on our large Moodle installation for months last year. Random "Parent: child process exited with status 255 -- Restarting" errors. I tried all of the things you've tried. The solution was to switch to mod_fcgid. Once we switched we are able to handle heavy traffic without any crashes.

I suspect it is some bug in the thread-safe version of PHP when using it as an Apache module.

[UnLucky]

Thank you guys for the replies.

I've already incresed memory in PHP to 128MB. A final page consumes less than 1MB memory (tested with memory_get_peak_usage(), memory_get_peak_usage(true), memory_get_usage()).

What's the most annoying thing is that httpd.exe get stuck randomly at 25% or 99% and the whole site is down till Apache is restarted or httpd.exe killed..

So I don't have another solution but just to switch to mod_fcgid?

Thank you

[UnLucky]

New error spotted in Event Viewer:

[Smitty]

I saw that error too when trying to run the thread safe PHP as an Apache module.

Unfortunately, I think the solution is to switch to mod_fcgid. The sad truth is that I don't think enough administrators are running PHP on Windows for it to be tested very thoroughly. Especially on high-traffic websites.

[UnLucky]

I see Smitty. You're right about PHP + Windows servers..
Well, I guess in the end I have to move to mod_fcgid. Thank you for your input!

[UnLucky]

Another random error that I got from time to time:
Fatal error: Out of memory (allocated xx) (tried to allocate xx bytes).

The problem was solved by restaring apache... Don't think that has to do with PHP memory_limit as I've set it to 1500M! Nor the system RAM, were plenty of free gigs. And the page that triggered that error consume less than 1MB RAM!

This and the apaches stucks at 99% & 25% motivated me to switch to mod_fcgid. I've just switched a few moments ago. Hope those problems gone away..

Another problem what I'm trying to solve is the interruption of downloads that are served directly by apache and not php. It happens random, don't know why.. Any clues?
I'm using the same custom settings as in the first post with the following additions:
KeepAliveTimeout 45
MaxKeepAliveRequests 1000
[fgci related settings]

[UnLucky]

Hey guys,

What approach it's better:

[UnLucky]

Happy new year!

I've solved my main problem by switching to fcgi and tuning it. Thank you guys!

Here's my config in case of someone is searching for a stable WAMP solution (sources: apachelounge, google)

[japi]

Hi everyone!

@UnLucky: Thanks for sharing your config, I'm currently setting up php via fcgi on my server too (I have been using the apache.org binaries + mod_php for the last 5 years... It's time for a change ^^).

Do the interruptions only occur on downloads through php or on static files too?
Why did you disable EnableSendfile and EnableMMAP? I have not experienced problems leaving them enabled on Windows Server 2008 R2. I have not benchmarked it, but it felt like the file downloads were a little slower if i disabled them.

Increasing the Timeout directive (maybe to 30) could also help (your current setting aborts the download if no ACK arrives for 5 seconds. Some W-LAN Users with a bad signal could easily run into that I think).

You could also try mod_xsendfile if your php application supports it, maybe that helps

Best Regards,
JP

[UnLucky]

Hi japi,

No problem!

Yes, mod_fcgi is a way better solution than mod_php! More stable and no apache stucks, at least till now. Been using days with no problem.. With mod_php I got lots of crashes (ntdll.dll, php5ts.dll). Or apache stucking at 99% and 25% resulting no page load until I killed the process or restart the service.

Regarding the interruption of downloads, you are right. I thought that Timeout directive is only for client first connection (since I use KeepAlive too).. Thank you for bringing this! I've increased the timeout and so far so good. Downloads are static.

I've disabled EnableMMAP/EnableSendfile because I've experienced slow-response problems if I recall correctly. That's true that when I was using mod_php. Haven't tried to play with them after switching to mod_fcgid since all works ok.

Thanks about mod_xsendfile tip. Maybe I will try that someday.

Edit: I've tried with EnableSendfile On and the download seems to be slower than with it Off..

[der_Ronny]

Hi,

i'm running Apache 2.4.3 and PHP 5.4.8 (both w32 version) on Hostsystem with Windows 7 ultimate, x64.

httpd.exe crashes randomly with the error:
Faulting application httpd.exe, version 2.4.3.0, time stamp 0x502f70a3, faulting module php5ts.dll, version 5.4.9.0, time sta....

Is the fcgi-solution the only way to solve this problem at this time?

I've never used fcgi....
i ever used the php_mod.....no knowledge how to implement the fcgi solution. :/

greetings, ronny

[der_Ronny]

Is there a documentation how to install PHP 5.x as a FCGI (like your description for troubleshooting in this article) on Apache 2.x Webserver?

Can I use this documentation: http://httpd.apache.org/mod_fcgid/mod/mod_fcgid.html
?

and should I use the original mod_fcgid from the apache.org-website or this one from the apache lounge:
http://www.apachelounge.com/download/
best regards,
ronny

[James Blond]

[der_Ronny]

okay, now I tried to solve the crashes with apache 2.4.3 and the newest php version (5.4.11) -> still the same problem --> httpd.exe crashes -> fault module: php5ts.dll



I also tried to use php as fast cgi module.
It seems that there are no crashes, but I have a customer on my webserver with a Joomla! 1.5 written homepage...
When I use the fcgi-implementation of php, the website could not be loaded correctly. Other PHP-Pages seems to work.

Do you know any dependences of Joomla! 1.5 and php-fcgi-implementations?

regards,
ronny

[der_Ronny]

...it looks like the problem doesn't result from the PHP Version...I think it's a problem with the apache release...
anyone get this errors with an earlier version of apache (< 2.4.3)??

[glsmith]

If php5ts.dll is crashing still, that means you are still loading the php5apache2_x.dll. It is this that has the problem. When using mod_fcgid, you do not need to load that module.

[UnLucky]

der_Ronny,
start with this:

[der_Ronny]

Hi,

okay I've implemented the fcgi solution...

summary of my config:

httpd.conf