Java and PHP bridging

Java servlet with PHP inside (no calls from PHP to Java)

RHEL 5 + Tomcat 5.5 + PHP 5.2.11 with APC over FastCGI

~40ms overhead for each Java-to-PHP request

This configuration is useless. The best way to deliver PHP pages directly remains Apache + mod_php.

Java servlet with PHP inside (no calls from PHP to Java)

RHEL 5 + Tomcat 5.5 + PHP 5.2.11 with APC over FastCGI

No significant performance difference between serving request directly with Tomcat and PHP versus using a JSP wrapper

A JSP wrapper provides no clean mechanism for PHP to send headers.

Serving a page purely from JSP scaled extremely well. There is potential for this configuration to handle some requests without connecting to PHP.

Java servlet with PHP inside (with calls from PHP to Java)

RHEL 5 + Tomcat 5.5 + PHP 5.2.11 with APC over FastCGI

Same Java-to-PHP performance as first configuration

PHP-to-Java requests take ~1-3ms

Have not measured the overhead of including the PHP-to-Java bridge code

This configuration is useless. The best way to deliver PHP pages directly remains Apache + mod_php.

Java servlet with PHP inside (with calls from PHP to Java)

RHEL 5 + Tomcat 5.5 + PHP 5.2.11 with APC over FastCGI

Same Java-to-PHP performance as first configuration

PHP-to-Java requests take ~1-3ms

Have not measured the overhead of including the PHP-to-Java bridge code

Apache with mod_php (with calls from PHP to Java)

RHEL 5 + Apache 2.2 + PHP 5.2.11 with APC over mod_php + Tomcat 5.5

HTTP client to PHP requests have < 2ms overhead

Loading the PHP-to-Java bridge takes 10-11ms

PHP-to-Java requests take ~1-3ms

Best configuration yet, but no potential to serve requests purely from Java.

RHEL 5 + Tomcat 5.5 + PHP via Quercus

Not tested yet

Should eliminate Java to PHP overhead

Caucho promises equivalent performance to PHP + APC with even their GPL version.

Only the proprietary version of Quercus supports compiling PHP.

Proprietary only

Untested

Not claimed to be production-ready