By Valerie YJ Lee, Solutions Architect
When evaluating the performance of a CDN or a current website, you may need to measure it directly without any tools. In this article, I will describe how to perform these tests for a website with the WebPageTest tool.
We'll be testing a website’s performance using http://www.webpagetest.org A simple test can be run using:
WebPageTest has some indicators for web page performance like network speed, CDN effectiveness, compressions, and so on.
You can see high level stats on page performance with WebPageTest. Repeat view is also shown here if selected.
Waterfall is a graphical representation that shows how the page and it’s object loaded
It shows how the page and its object loaded. In the figure below, you can see two items highlighted: the paint and render times. First paint is usually what other end-user monitoring tools will give you.
What to look for in the waterfall
3. Long Bars (any colour)
If you want to check your web site performance before or after using CDN, WebPageTest tool will be helpful as an instant test. Synthetic monitoring tool is good for checking up site availability and performance trend by geo location, but the price is quite expensive. There are free and cool tools with good quality like WebPageTest, so just try to find more useful clues on your website. Have fun!
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