Danny van Kooten

Basic profiler for WordPress Plugins. Benchmarks any given plugin by testing response times with and without the plugin activated.
<blockquote>
Plugin Profiler is on GitHub.
Bug reports (and pull requests) are welcomed on the <a href="https://github.com/dannyvankooten/wp-plugin-profiler" rel="nofollow ugc">Plugin Profiler GitHub repository</a>.
Please note that GitHub is not a support forum.
</blockquote>
<h4>Profiling a plugin</h4>
This plugin measures response times of any URL on your website in the following ways.
<ul>
<li>No plugins activated</li>
<li>Only the selected plugin(s) activated</li>
<li>All but the selected plugin(s) activated</li>
<li>All plugins activated</li>
</ul>
It then plots the response times in a chart and calculates the average response time time difference.
While this way of profiling a plugin is very low-tech it can be interesting to measure the impact of a plugin on your site’s response time. 
Please note that this way of benchmarking leaves a lot of factors out – like additional HTTP requests caused by a plugin, etc..
<h4>Installing Plugin Profiler</h4>
Since this plugin needs to filter out which plugins are activated for the profiling requests, it needs to be installed as a must-use plugin so it’s loaded early.
Have a look at the <a href="https://wordpress.org/plugins/plugin-profiler/installation/">installation instructions</a> for details.
More information
<ul>
<li>Developers; follow or contribute to the <a href="https://github.com/dannyvankooten/wp-plugin-profiler" rel="nofollow ugc">Plugin Profiler plugin on GitHub</a></li>
<li>Other <a href="https://dannyvankooten.com/wordpress-plugins/#utm_source=wp-plugin-repo&utm_medium=link&utm_campaign=more-info-link" rel="nofollow ugc">WordPress plugins</a> by <a href="https://dannyvankooten.com#utm_source=wp-plugin-repo&utm_medium=link&utm_campaign=more-info-link" rel="nofollow ugc">Danny van Kooten</a></li>
<li><a href="https://twitter.com/dannyvankooten" rel="nofollow ugc">@DannyvanKooten</a> on Twitter</li>
</ul>

Plugin Profiler

The plugin is currently working, and showing the load time of all plugins, no plugins, all but one plugin you specify, and that one plugin only. Pretty good for showing clients how much their plugins are slowing down their site. I like this plugin better than the p3 profiler.

WARNING: Copying and pasting the profiler.php file from the installation instructions will cause a white screen of death. You need to replace the quotes with normal quotes.

Works with WP 4.9

Basic plugin profiler. Benchmarks response times with and without a given plugin activated.

Scott Farrell

This plugin will record the performance of your wp Hosting company.
Ever noticed your site seems to perform OK when you check, but other folk say its slow later. Like gremlins are getting in and making it slower ?
It’s often difficult to know how your wp web site is performing, and how real end users are experiencing the performance of your wp web site.
This plugin will display graphs of the performance of the server (so you’ll be able to see what the gremlins are doing).
It also tracks performance of the web page load speed, which includes all the assets jpg/png/css/js.
You’ll be able to view graphs for different periods of time, to see how your server is performing, and how real world users are observing the performance of your wp site.
You’ll be able to observe when the server is sluggish, or when it is fast.
It is designed to run async, so any performance hit is after the end user’s web page has finished loading. This should result in no impact to your WordPress website delivering pages.
It also has a feature to email you when the server response becomes unacceptably slow.
New Features 
– ability to load test your WordPress website – see how many visitors you can comfortably accommodate. 
– ability to benchmark your current hosting against other hosting companies 
– technology index – to give you an idea of how good/poor the technology your WordPress site is running on 
– artificial benchmark of php and mysql (on the sysinfo page for now). 
– php and technology index on the hosting comparison pages. 
– bot analysis – how much resources are bot consuming ?

wp Hosting Performance Check

Records the performance of your wp hosting server, display graphs , software levels, benchmark, and load test.

Plugin Profiler vs wp Hosting Performance Check