Probing the Limits
of a Web Server

Find the limits of a web server

We used Webserver Stress Tool to find the limits of a web server. We requests a simple HTML page every 2 seconds in a ramp test from 0 to 4,000 users.

In the chart you can see that the test went well until about 1,000 simultaneous users. Hits per second went up to 550 hits per second, but could not get any more clicks from this webserver while we increased the number of users further to 4,000 users.

 Test Setup

Test Type

RAMP (number of users increases during the test time)

Number of Users


Click Delay

2 sec.

Tested Web Server

DELL Optiplex 7010, one cpu, 4 cores, Intel Core i5-3550S @ 3 Ghz, 8 GB RAM, Windows 7

Test Client

DELL R710 Server with two cpus, 24 cores, Intel Xeon X5650 @2.67 Ghz, 128 GB RAM, Windows 2008 R2 (running Webserver Stress Tool)