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Please find the latest manual for Webserver Stress Tool here:
For each simulated request that Webserver Stress Tool sends to the server, one arrow is shown in this chart.
Each arrow represents one hit (i.e. one HTTP request). The black arrows are pages (i.e. HTML files), the green arrows represent images, the blue arrows show frames and the red arrows show failed requests.
This sample chart shows clicks to several URLs with HTML pages (single black arrow) and pages with frames and images (black arrow with blue arrows). There are also some failed requests (red arrows).
The longer a request took, the further right the arrow ends. As soon as the HTML text of a page request is received, the images are requested from the server and shown in the chart with the green arrows.
Notice the red arrows which represent failed PAGE requests.
Here is an older example of a hierarchy graph:
It shows the request hierarchy for one user to a website. The website has a homepage URL such as “www.company.com“ which redirects to a frameset. In this view, the arrow is the first request to the company URL. The request is then redirected to a frameset page (second arrow), which consists of several HTML pages/frames (blue arrows). The html pages of each frame then has their images (green and red arrows).
In total a visitor of this webpage needed at least 5 seconds for the complete page to load. That’s very slow…