Almost every developer knowns that the poor performance in many cases is due to poorly designed database or SQL queries
(for example, when the table does not have indices that the query can use or when the query uses unnecessary
performance killers such as ORDER BY/GROUP BY).
WordPress can provide only the list of the queries and the developer has to manually run every query and analyze it.
Very boring, isn't it? SQLMon tries to help the developers and analyzes the query itself, reporting everything that needs attention.
Every query passed to WordPress is analyzed (using EXPLAIN) and the results are shown in the theme's footer or Admin panel's footer
(they are visible to site administrators only — this allows to use SQLMon even on live sites).
One of the key features of SQLMon is that it can run EXPLAIN not only on SELECT queries but also on UPDATE/DELETE and INSERT/REPLACE INTO … AS or
CREATE TABLE … AS.
The plugin is perfect for WordPress developers, plugin and theme authors and site administrators who are trying to find out why the blog is too slow.
IMPORTANT: the project has moved to Launchpad, please use it to report all bugs, suggest improvements,
request features and get the latest development version.
WP Tuner
The (mu-compatible) WP Tuner plugin for WordPress is a powerful and easy to use way to answer many hard questions about why your blog is slow or cranky. What's causing the slowdown? Is it a plugin? Is it your host?
Used with a bit of common sense, this powerful plugin will help blog administrators .........
Debug Queries
List query-actions only for admins; for debug purposes. See all queries on the frontend of the blog and find the slowest part....
Adminer
Adminer (formerly phpMinAdmin) is a full-featured MySQL management tool written in PHP. Conversely to phpMyAdmin, it consist of a single file ready to deploy to the target server. This plugin include this tool in WordPress for a fast management of your database. Adminer is also used without this plu.........
Debug Objects
The Plugin Debug Objects provides the user, which has the appropriate rights, normally the administrator, a large number of information: query, cache, cron, constants, hooks, functions and many many more. Values and content get displayed at the frontend and backend of the blog, to analyze errors but.........
WP-FirePHP
No longer maintained
This plugin is no longer maintained. It is actively tested up to version 3.4.2.
This Plugin integrates FirePHP in your WordPress installation and simplifies developing. No more vardump() and echo while debugging. FirePHP take care of it, clean and easy. WP-FirePHP simplifies t.........
MySQL Profiler
MySQL Profiler displays debugging information about SQL queries to admin WordPress users. For each query, the profiler displays the time, syntax-highlighted SQL, and a trace of the functions (as well as the file and line number that the functions were called from) that were called.
The list can be.........
Wixiweb FirePHP Queries
Use Firebug with FirePHP to analyze the SQL queries made by WordPress. Ideal for development and avoid performance issues.
...
Quick Cache (Speed Without Compromise)
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NOTICE: This plugin is no longer maintained. Quick Cache is now ZenCache!
See also: ZenCache on WordPress.org
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If you care about the speed of your site, Quick Cache is o.........
ManageWP Worker
ManageWP is a revolutionary service designed to automate most of your daily tasks when managing multiple WordPress websites, allowing you to use your time on more important matters....
WP Performance Pack
WP Performance Pack is your first choice for speeding up WordPress core the easy way, no core patching required. It features options to improve localization performance and image handling (faster upload, reduced webspace usage). Combined with CDN support for images, both on the site and in the admin.........
