Long web server response times

When I test website with Google PageSpeed insights, I am getting: Long web server response times

when the same site is served from a non-VM host, the web server response is faster.

Is there a way to diagnose the web server response time to see what the bottleneck is?

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Comments

Howdy -- well, the websites are served directly from Apache... so a site should be just as fast on a system with Virtualmin, as it is without. Virtualmin isn't involved while serving a web page.

There could be other differences though... different software versions, different ways things have been configured, and such.

Also, you could try going into Server Configuration -> Website Options, and in there you could try changing the PHP Execution Mode to see if any of the different modes make a difference.

Thanks