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From Fiona Sisk <fiona.s...@gosnetworks.com>
Subject PHP script is running very slowly when using Apache PHP module
Date Mon, 17 Oct 2011 16:49:46 GMT
Hi,

I have a problem with the Apache PHP module and am hoping for some pointers
on how to investigate it.

I have written a PHP extension that is called by a PHP script.
I use PHP as a module of  Apache ( 1.3.37 or 2.2.19, I've tried both).
*
LoadModule php5_module        libexec/apache/libphp5.so*

I'm getting very slow response times from my PHP script. (approx 1 minute)

However it is only when I run it as an Apache module that the problem
manifests itself.
If I run the PHP script /PHP extension on the command-line i.e. not as a
module of Apache  the time it takes is negligible.


The  PHP (5.3.4) extension crunches a lot of data from a DB and eventually
produces one very large PHP array.
which is returned to the client as JSON in the HTTP $_POST response  ( Also
gzip compression of the HTTP contents is used.)
(In JSON format, the size of the array is 3.7M)

I didn't have any problems with the application until recently when the size
of the data I'm requesting has increased dramatically.

 So it seems that I need to do some 'module' tuning of Apache but I don't
know how. I have already changed these parameters in
the php.ini to make the extension work.  I include some relevant looking
httpd.conf parameters also below. I haven't touched any of these.

max_execution_time = 60 ( 'cos the PHP script execution was timing out
before the extension finished!)
memory_limit = 256M


Any suggestions.? Please bear in mind that I'm not trying to write a Apache
module, just figure out what my performance
problems are when using a very common one.

Thanks in advance.
Fiona

ScoreBoardFile /var/run/httpd.scoreboard ( doesn't exist on my Linux
machine)
Timeout 300
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
MinSpareServers 5
MaxSpareServers 10
StartServers 5
MaxClients 150
MaxRequestsPerChild 0
LoadModule vhost_alias_module libexec/apache/mod_vhost_alias.so
LoadModule env_module         libexec/apache/mod_env.so
LoadModule define_module      libexec/apache/mod_define.so
LoadModule config_log_module  libexec/apache/mod_log_config.so
LoadModule mime_magic_module  libexec/apache/mod_mime_magic.so
LoadModule mime_module        libexec/apache/mod_mime.so
LoadModule negotiation_module libexec/apache/mod_negotiation.so
LoadModule status_module      libexec/apache/mod_status.so
LoadModule info_module        libexec/apache/mod_info.so
LoadModule includes_module    libexec/apache/mod_include.so
LoadModule autoindex_module   libexec/apache/mod_autoindex.so
LoadModule dir_module         libexec/apache/mod_dir.so
LoadModule cgi_module         libexec/apache/mod_cgi.so
LoadModule asis_module        libexec/apache/mod_asis.so
LoadModule imap_module        libexec/apache/mod_imap.so
LoadModule action_module      libexec/apache/mod_actions.so
LoadModule speling_module     libexec/apache/mod_speling.so
LoadModule userdir_module     libexec/apache/mod_userdir.so
LoadModule alias_module       libexec/apache/mod_alias.so
LoadModule rewrite_module     libexec/apache/mod_rewrite.so
LoadModule access_module      libexec/apache/mod_access.so
LoadModule auth_module        libexec/apache/mod_auth.so
LoadModule anon_auth_module   libexec/apache/mod_auth_anon.so
LoadModule dbm_auth_module    libexec/apache/mod_auth_dbm.so
LoadModule digest_module      libexec/apache/mod_digest.so
LoadModule proxy_module       libexec/apache/libproxy.so
LoadModule cern_meta_module   libexec/apache/mod_cern_meta.so
LoadModule expires_module     libexec/apache/mod_expires.so
LoadModule headers_module     libexec/apache/mod_headers.so
LoadModule usertrack_module   libexec/apache/mod_usertrack.so
LoadModule log_forensic_module libexec/apache/mod_log_forensic.so
LoadModule unique_id_module   libexec/apache/mod_unique_id.so
LoadModule setenvif_module    libexec/apache/mod_setenvif.so
LoadModule php5_module        libexec/apache/libphp5.so

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