Strange wordpress slowness

You can use the plugin Debug Objects and his query function to identify the slowest queries from core and plugins. I see very often the problem on a plugin or theme functionality. Identify and solve.

Related Posts:

  1. Can i use php sql functions instead of $wpdb?
  2. How to validate WordPress generated password in DB using PHP?
  3. How to get the list of WooCommerce product image of a certain category from database?
  4. Custom query to get post names beginning with a digit
  5. How To Make Connection To WordPress Data Base In A Plugin?
  6. Changing user_nicename
  7. WordPress will not operate correctly
  8. tag search using WP_Query
  9. Your PHP installation appears to be missing the MySQL extension which is required by WordPress
  10. How to track a users progress through pages by inserting data into WordPress Database?
  11. the_author_meta not working
  12. if statement on database query
  13. Is the regular ajax request method safe or I should use admin-ajax.php?
  14. Sortable admin column for one meta key with three possible meta values
  15. WordPress Ajax Custom Query – High CPU LOAD
  16. AJAX in WordPress, sending coords data to MySQL and show after into map
  17. How to migrate the posts from an old custom legacy blog to a new WordPress website?
  18. Styling images coming from another blog
  19. mysqli_real_connect() – authentication method unknown to the client Warnings
  20. Do I need to prepare query before get_results(), get_row() and get_var()?
  21. How to create and work with custom data / tables (i.e., for arbitrary data)?
  22. How to select WooCommerce products by post_meta and order them
  23. Remove one value in dismissed_wp_pointers?
  24. Accessing data from a non-WP database/table within a page content
  25. I want to select the from values from database in WordPress? [closed]
  26. User management system similar to wordpress one?
  27. SQL Injection blocked by firewall
  28. WP_Query adds “(wp_posts.ID = ‘0’)” so no results are returned
  29. How can I save unique user data on my site? [closed]
  30. Ordering users by custom user meta
  31. Long running queries
  32. Help with a $wpdb MySQL Query
  33. WordPress SQL injection
  34. How i can obtain all the post meta for a specific post as an array?
  35. multiple where condition in result query
  36. Grouping posts by a custom meta value
  37. Can’t Query Custom Table Using $wpdb Method
  38. $wpdb returns duplicate posts
  39. Update postmeta after theme switch
  40. Mixing variables into an array when inserting values
  41. Should I use WordPress to skin a database website?
  42. Creating Database Table vs. Adding MetaData to Post & User
  43. WordPress Custom SQL Table with UserID Filter for results
  44. How can I add a new row in a separate database when someone registers via WordPress?
  45. I can’t update my data through $wpdb
  46. Output: “Array”
  47. How to use mysql LIKE with wpdb?
  48. Submitting a form, using Ajax, to run a SQL Select query based on user input from the form
  49. WordPress WP_Query without query GET parameters
  50. How to use AJAX in WordPress in MYSQL query?
  51. Use variable in SQL statement
  52. Live search from database table
  53. Processing ajax call to php to insert into mysql database
  54. WPDB secure custom form
  55. phpMyAdmin error #1062 – Duplicate entry ‘1’ for key ‘PRIMARY’
  56. Query the links Database
  57. How to create Loop code for Menu using WordPress?
  58. WordPress Custom Query: Combining Two Functions
  59. MySQL Query Returns Array () In Shortcode
  60. Passing in MySQL prepare statement parameter separately throwing error
  61. Convert a column of a table containing an Array as response in HTML
  62. Database SQL query error
  63. Error establishing a database connection (Set-up locally)
  64. Display Results of SQL Query on WP site
  65. PHP Warning: mysqli_query(): after updating my websites php from 5.6 to 7.2
  66. MYSQL TIMESTAMP when adding DATE_FORMAT then the output is blank, PHP conflict?
  67. Updated Php version from 5.4 to 7.2 and getting “PHP installation missing the MySQL extension needed by WordPress”
  68. how to get data from two different table from wordpress database
  69. Passing Current User ID into SQL statement
  70. How to optimize and reduce excessive database queries
  71. How to insert multiple rows and columns in database using array
  72. How to display MySQL table data which is stored as an array?
  73. Store GA Client ID in User DB
  74. How to import woocommerce custom fields data into another site?
  75. PHP 7.2.18 | Your PHP installation appears to be missing the MySQL extension which is required by WordPress
  76. Windows Setup: Error establishing a database connection
  77. Need help with format of nested array in MySQL
  78. WAMP SERVER Command Prompt SET PATH=%PATH%
  79. Inserting other fields to existing registration form in a WordPress theme
  80. Advanced WordPress SQL Query
  81. Splitting table data to pages with numbers
  82. How can get all users by current user meta (array)?
  83. Site doesnt work once PHP changed to 7.1
  84. How to detect if a revision was made by woocommerce or wordpress?
  85. WordPress WPDB::insert 13th param is always blank (only if format)
  86. Ajax not updating to database
  87. can’t delete a row from post_meta table
  88. MySQL query in WordPress with AJAX
  89. Processing forms with php to wordpress database
  90. MySQL queries in WordPress
  91. How to connect database table to each registered wordpress user.
  92. retrieve wordpress post-meta using php not wordpress functions
  93. Splash pages on a high traffic site
  94. Using the same shortcode to show any table from the database
  95. Let users register weight each day and save it in DB
  96. I am unable to fetch json data from wp_db
  97. Submit cf7 form to cfdb as pdf/BLOB [closed]
  98. How to send push notification in android using php? [closed]
  99. running an existing WordPress site from Visual Studio Code?
  100. Global update of records after import WP All Import Pro