http://httpd.apache.org/docs/2.2/programs/ab.html

http://www.cyberciti.biz/tips/howto-performance-benchmarks-a-web-server.html

ab -c 50 -n 10000 URL_TO_THE_SITE

-n 10000: ab will send 1000 number of requests to server 202.54.200.1 in order to perform for the benchmarking session
-c 50 : 50 is concurrency number i.e. ab will send 50 number of multiple requests to perform at a time to server 202.54.200.1

Login to Linux/bsd desktop computer and type following command:

$ ab -n 1000 -c 5 http://202.54.200.1/snkpage.html

Where,

-n 1000: ab will send 1000 number of requests to server 202.54.200.1 in order to perform for the benchmarking session
-c 5 : 5 is concurrency number i.e. ab will send 5 number of multiple requests to perform at a time to server 202.54.200.1
For example if you want to send 10 request, type following command: