HIgh CPU usage – Will using cache plugins help

Simplest way to see what is causing it is to disable all plugins and add them back one at a time. If that doesn’t reveal it, switch to a default theme. After that I’d say it is something server side.

To answer your question though – caching should help but it depends on what is causing the high usage.

Related Posts:

  1. W3 total cache – cache refresh programmatically [closed]
  2. Best way to show Dynamic Content on a Cached WordPress Site?
  3. Pros and Cons for high “expire time” on wp-super-cache or w3-total-cache? [closed]
  4. Limit cache size from W3 Total Cache [closed]
  5. Multiple WordPress sites eat up alot of RAM
  6. WordPress Browser Cache with W3-Total-Cache doesn’t show new posts [closed]
  7. Varnish + W3 Total Page Cache [closed]
  8. W3 Total Cache doesn’t detect memcached [closed]
  9. Settings to get the most out of W3 Total Cache
  10. How to force content refresh of a page that has been loaded previously by the user? [closed]
  11. Transient / object cache maximum key length [duplicate]
  12. Should the page cache be refreshed often? [closed]
  13. What is difference between ‘Page Cache’ and ‘Object Cache’ in WordPress?
  14. Getting soft 404 errors (200 status) when caching plugins are enabled
  15. server load. $_SERVER[‘REMOTE_ADDR’] and $_SERVER[‘HTTP_HOST’] [closed]
  16. Headway body classes and W3TC page cache conflict [closed]
  17. How to cache a different page version based on HTTP header?
  18. W3 Total Cache can’t create files [closed]
  19. How effective are cacheing plugins for dynamic pages?
  20. Combile External JS files using W3 Total Cache [closed]
  21. How can I cache font files on WordPress [closed]
  22. W3 total – leverage browser caching not working with cdn delivered images [closed]
  23. Scheduling doesn’t work due to caching?
  24. APC fragmention woes on Apache AWS EC2 Small instance with WordPress and W3TC [closed]
  25. w3 total cache – Object Caching 2165/2469 objects? [closed]
  26. Changing WP Object Caching during runtime
  27. Clear cache when comment is added
  28. WordPress varnish pages printed twice
  29. WordPress Userroles button getting cached
  30. custom php file inside my custom folder of plugins directory is not caching
  31. w3 total cache uninstall remove cache
  32. Page wrongly displayed when cache plugin activated
  33. Bluehost WebHost and performance problems with W3TC [closed]
  34. W3 Total Cache Minification: way to revert back? [closed]
  35. Multiple WordPress sites eat up a lot of RAM
  36. Keeping Objects in Memory
  37. Prevent WordPress from sending Cache-control http header
  38. Optimize apache for WP use
  39. Trouble with Transient API when W3TC is activated [closed]
  40. Disable WordPress cache programmatically on a request [closed]
  41. What exactly is an advanced object cache?
  42. Using a wildcard with delete_transient()
  43. Is it possible to disable caching of an option when using w3 total cache?
  44. How to purge all transient caches?
  45. Writing a cache manifest file for a WordPress blog (app cache, offline web applications)
  46. Can I ignore caching of a plugin in W3 Total Cache? [closed]
  47. How to exclude a specific template from being cached by a CDN [closed]
  48. Want to enforce the visitor to load the new version of your stylesheets and scripts [closed]
  49. WordPress caching in development
  50. W3 total Cache – Site with query strings
  51. Possible to configure nginx to ignore cache for logged in users in certain roles only?
  52. Using Multisite with a CDN?
  53. Automatically enabled caching in some hosting companies w/o visible plugin (Must use plugin)
  54. How to purge all transient caches?
  55. W3 Total Cache plugin integration
  56. Plugin Expires Headers – W3 Total Cache [closed]
  57. Transient API and caching Plugins
  58. Execute a piece of code also when the cached version of a page is served
  59. pass-protected pages and posts not protected after enter them 1 time
  60. Can a WordPress blog be entirely hosted on a CDN if cached?
  61. Static HTML page caching for large website [closed]
  62. To have WordPress interact with memcached it must be installed as a PHP extension?
  63. How can I revert to showing cached pages when no database connection is available? [closed]
  64. WP Super Cache Bug with Ubermenu
  65. Problem with caching, W3TC [closed]
  66. Reasonable Size Limit to options entry
  67. Is the object cached?
  68. How to find time last viewed?
  69. How to store or cache custom shopping cart data for every user’s session
  70. Running code before object-cache.php runs
  71. W3 Total Cache: use cache for request with ignorable query string [closed]
  72. Hook an action when a transient is deleted ? Can’t get it to work!
  73. Accelerate and clean up WordPress [closed]
  74. How to make page/post password protected so you must reenter everytime you visit the page?
  75. Theme compression/ minifying or W3 Total Cache – which should I use? [closed]
  76. Enabling Cache on WP Membership Sites. Good OR Bad?
  77. RSS: fetch_feed caching with different caching delay per feed?
  78. How to be sure to get last page version without ANY cache?
  79. Last-Modified header support doesn’t speed up server processing – want more
  80. Jetpack stats and caching strategy [closed]
  81. How do I serve fully cached full HTML on cloudfront
  82. W3TotalCache and Javascript — what should go where, when?
  83. Memory consumption in w3-total-cache vs wp-super-cache? [closed]
  84. Minifing js files with w3 total cache and expiring the combined file [closed]
  85. Get user name and caching system
  86. How to solve simple wp simple ajax chat caching problem
  87. dynamic page not displaying correctly when Varnish hosting ignores query string parameters
  88. How to not cache nonces with WP Rocket?
  89. What do I do if my WordPress site is suddenly sanitizing portions of URLs it shouldn’t?
  90. How to disable cache for the content returned by a shortcode
  91. Splash pages on a high traffic site
  92. Pagination in WP query with transient API
  93. After Migration, Warning: include_once() errors on all pages
  94. Server Variables not recognized in certain posts
  95. W3 Total Cache benefits without using plugin? [closed]
  96. Browser Cache causes ‘Orderby=rand’ to return the same posts
  97. Experiencing a weird caching issues without any caching plugins
  98. Cannot add version of main.css to wordpress on testing enviroment
  99. How to create a transient that persists the data for the whole duration of the expiration, even when object cache is enabled?
  100. Why does enabling caching break password protected pages? Is there a way around this?