I have got in troubles with allocating more resource for PHP website of a virtual server.
I have a script (I think it needs a lot of resource). When I executing it, whole website are inaccessible with 500 Internal Error: Premature end of script headers. PHPMYADMIN installed within that Virtual Server was still working.
In fact, when that script is executed, RAM & CPU are about 75% available && Websites from other Virtual Server worked properly.
I think I need allocate more resource to that Virtual Server: PHP: Maximum memory allocation: -> 1024MB
Apache Virtual Server: CPU resource limit: 3000 Process Limit: 3000 Memory resource limit: 1024
However, Nothing worked.
Please let me know how I can track and solve problems.