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Please find the latest manual for Webserver Stress Tool here:

Manual Webserver Stress Tool (pdf)
 

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Graph Protocol Times

An HTTP request consists of several stages. First, the webserver name has to be resolved into an IP address using DNS (Time for DNS), then an IP port is opened on the server by the client to send the request header (Time to Connect). The server then answers the request (Time to First Byte) and sends all data. When all data is transferred, the request is finished (Click Time).

Also in this graph a line is shown for the “time for local socket” which is the time that Webserver Stress Tool needed to acquire an open socket from the IP stack of the machine it runs on. For ususal test this value should always be in the lower millisecond area (1-30 ms). For extreme traffic tests this value can rise above 50-100 ms which is a sign that the performance limits of the local machine have been reached.

The average value of these five readings are displayed in this graph:

 

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