Yii Application Is Taking 100% Cpu Usage

hi, i’ve a simple PHP application with YII frame work which is running in Apache server on centos-6.5. I’ve put load on the application using Jmeter. From Jmeter i was just hitting the index page of the application (no DB access, no huge lines of code). so, for just 10 threads, httpd is taking 95-100% CPU Usage. I tested with simple info.php file also, while putting load on it, httpd is not taking more 20% even for 100 threads. but when i tested my application with YII, then i’m getting this problem.

YII version - 1.1.4

httpd version - 2.2.15


Note: memcached also installed.

can any one help me with this…? if you want any more information, i’ll provide you…

Thank you adavance…