load_test_ab []

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Load Testing Using ab

ab - Apache HTTP server benchmarking tool

# which ab
/usr/bin/ab

# rpm -qf /usr/bin/ab
httpd-tools-2.2.15-39.el6.centos.x86_64
httpd-tools-2.2.15-47.el6.centos.x86_64

Flag	Description
-n	The number of requests to be performed (Default is 1)
-c	The number of concurrent requests to be performed at a time (Default is 1)
-k	Enabled the 'Keep Alive' feature to perform multiple requests in the same HTTP session (Default is NO Keep Alive)
-H	Append extra headers to the request

ab -n 10000 -kc 10000  http://www.example.com/

Common Issues

This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking www.example.com (be patient)
socket: Too many open files (24)