BIP KB:
How To Stress Test An Apache Server Using AB (Apache Benchmark)
Article By steve
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Using a benchmarking tool to test the limits of your apache server will help you prepare for upgrades. |
Installing AB on CentOS (with cPanel)
cPanel adds in an exclusion for all packages named httpd* (any files starting with httpd) to prevent accidentally overwriting apache.SSH into your server.
Edit /etc/yum.conf and remove the entry httpd* from the Exclude line
vi /etc/yum.conf exclude=bind-chroot courier* dovecot* exim* filesystem httpd* mod_ssl* mydns* mysql* nsd* php* proftpd* pure-ftpd* spamassassin* squirrelmail*
Once the entry has been removed, save the config file and exit.
Run the following command to install ab.
yum install httpd-tools
Make sure to go back into the /etc/yum.conf and add httpd* back to the exclude list, otherwise, you risk breaking your cpanel installation.
Installing AB on Debian/Ubuntu
SSH into your server (or if you are using a desktop open a terminal)Run the following command to install ab.
sudo apt-get install apache2-utils
Running a stress test
Once you have the program installed, you can run a stress test against a domain name.WARNING: Do not use this against a site you do not control as it will be considered an attack.
Here is an example of a stress test that will simulate 100 users simultaneously making accessing a website.
ab -c 100 -n 100 -r http://example.com/You can check the manual for ab to find out more information about its options.
Tags: don't wait to educate, apache webserver, apache, apache benchmark, benchmark
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