revisit this thread.
"EAPro Req/Sec: 20000"
this means: 20K requests to external process, like php. this may kill one server and make it no response.
assume the 20K requests to long_run.php
to deny access within long_run.php is not a good idea, since still need launch many lsphp processes. instead, can add a rewrite rule
RewriteRule long_run.php empty.html
in this way, 20K requests can be "processed" qucikly and won't take down the whole web server. so web master disable the access to the .php efficiently and visitors can continue to access other pages.
Just an example for reference.