It stands for “ApacheBench,” which is used to benchmark the performance of web servers. It is part of the Apache HTTP and is made available on Linux systems.
It sends a specified number of requests to a web server to measure the server’s response time and other performance metrics. Which can be helpful in determining how well a web server performs under different loads and conditions
- Comes From : httpd-tools-2.2.15
Examples:
1. To do a performance benchmarking of your web site, by sending 10 number of requests
| $ ab -n 10 http://192.168.27.128/index.html |
2. To increase the verbosity level
| $ ab -n 10 -vv http://192.168.27.128/index.html $ ab -n 10 -vvv http://192.168.27.128/index.html |
3. To do HEAD requests instead of GET
| $ ab -n 10 -i http://192.168.27.128/index.html |
4. To give number of concurrent requests
| $ ab -n 100 -c 20 http://192.168.27.128/index.html |
5. To not to display “percentage served within XX [ms] table”
| $ ab -n 100 -c 20 -d http://192.168.27.128/index.html |
