shawfactor

This plugin logs all wordpress queries in the current page request as a html comment at the end of your output.
It only does so when the get variable lh_log_queries is set. That variable has three settings. 
1. queries: this logs queries only 
2. hooks: this logs hooks only 
3. both: this logs both hooks and filters
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Love this plugin or want to help the LocalHero Project? Please consider <a href="https://lhero.org/portfolio/lh-log-queries/" rel="nofollow ugc">making a donation</a>.

LH Log Queries and hooks

Decisions not options for query and hook logging

webvitaly

<ul>
<li><a href="http://web-profile.net/wordpress/plugins/" title="WordPress Pro plugins" rel="nofollow ugc">WordPress Pro plugins</a></li>
<li><a href="http://web-profile.net/wordpress/plugins/info/" title="Info plugin page" rel="nofollow ugc">Info plugin</a></li>
<li><a href="http://web-profile.net/donate/" title="Support the development" rel="nofollow ugc">Donate</a></li>
<li><a href="https://github.com/webvitalii/info" title="Fork" rel="nofollow ugc">GitHub</a></li>
</ul>
Plugin shows in the admin bar: 
* the number of SQL queries during the WordPress execution 
* the amount of time in seconds to generate the page 
* memory load
Admin bar can be enabled in your profile: <code>"Users => Your Profile => Show Admin Bar"</code>. 
This information also added to the bottom of the source code as HTML comment.
<h4>Useful:</h4>
<ul>
<li><a href="https://wordpress.org/plugins/page-list/" title="list of pages with shortcodes" rel="ugc">“Page-list” – show list of pages with shortcodes</a></li>
<li><a href="https://wordpress.org/plugins/iframe/" title="embed content" rel="ugc">“Iframe” – embed content</a></li>
<li><a href="http://web-profile.net/wordpress/plugins/" title="WordPress Pro plugins" rel="nofollow ugc">WordPress Pro plugins</a></li>
</ul>

info

Plugin shows in the admin bar the number of SQL queries, the amount of time in seconds and memory load.

LH Log Queries and hooks vs info