Title: Website slow, using 100% cpu usage Last modified: August 22, 2016 --- # Website slow, using 100% cpu usage * [RubyA](https://wordpress.org/support/users/rubya/) * (@rubya) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/) * Hi * My website is incredibly slow. I do not have that much content and not many people visit the site at all. * I have disabled plugins and it is still slow. * Many times when i try to navigate to posts or plugins page, it takes a long time to load than it leads me to the error 404 page. * I also get a 500 Internal Server Errors and Resource Limit Is Reached errors. * my website is [http://www.amust.com.au](http://www.amust.com.au) Viewing 11 replies - 1 through 11 (of 11 total) * [lisa](https://wordpress.org/support/users/contentiskey/) * (@contentiskey) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465813) * A few ideas: have you tested your website to help pinpoint the issues. use a tool like this: [http://www.webpagetest.org/](http://www.webpagetest.org/) * have you chatted with your web host to see if the issues are related to the server? * are you using any plugins that use alot of resources? [https://wordpress.org/plugins/p3-profiler/](https://wordpress.org/plugins/p3-profiler/) * do you have any large images that might be taking a long time to load? * is there anything about the theme that might be causing slowness? does your theme author offer support? * [jack randall](https://wordpress.org/support/users/theotherlebowski/) * (@theotherlebowski) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465817) * what version of wordpress are you running? what plugins are you using? what theme are you using? * Thread Starter [RubyA](https://wordpress.org/support/users/rubya/) * (@rubya) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465818) * > A few ideas: > have you tested your website to help pinpoint the issues. use > a tool like this: [http://www.webpagetest.org/](http://www.webpagetest.org/) > have you chatted with your web host to see if the issues are related to the > server? > are you using any plugins that use alot of resources? > [https://wordpress.org/plugins/p3-profiler/](https://wordpress.org/plugins/p3-profiler/) > do you have any large images that might be taking a long time to load? > is there anything about the theme that might be causing slowness? does your > theme author offer support? * thanks for replying. I will try your links out. my host says everything is fine on their side, it must be a plugin or theme. * i do have large images. is there any way to resize them without reuploading them? * > what version of wordpress are you running? what plugins are you using? what > theme are you using? * im using wordpress 4.0, theme is quadrum by oangethemes. currently im using Auto Tags Generator, gravityforms, scroll back to top, Simple Ads Manager and WPBakery Visual Composer * [jack randall](https://wordpress.org/support/users/theotherlebowski/) * (@theotherlebowski) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465819) * ok, auto tags generator hasn’t been updated in over a year and is only compatible up to version 3.6.1, scroll back to top hasn’t been updated in 4 months and is only compatible up to 3.9.2. * beyond those potential issues you may have an issue with your theme and visual composer both of which are paid for addons so if you address the plugins that are out of date and things are still slow you should get in touch with themeforest about your theme and wpbakery about their composer. * other things to consider might be the server you’re on… * Thread Starter [RubyA](https://wordpress.org/support/users/rubya/) * (@rubya) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465846) * > ok, auto tags generator hasn’t been updated in over a year and is only compatible > up to version 3.6.1, scroll back to top hasn’t been updated in 4 months and > is only compatible up to 3.9.2. > beyond those potential issues you may have an issue with your theme and visual > composer both of which are paid for addons so if you address the plugins that > are out of date and things are still slow you should get in touch with themeforest > about your theme and wpbakery about their composer. > other things to consider might be the server you’re on… * Alrighty ill get more updated plugins and check WPBakery Visual Composer. thanks for your help * [jack randall](https://wordpress.org/support/users/theotherlebowski/) * (@theotherlebowski) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465848) * no worries, good luck. * Thread Starter [RubyA](https://wordpress.org/support/users/rubya/) * (@rubya) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465856) * I installed P3 (Plugin Performance Profiler) * this is the results. im not sure what it means though * WordPress Plugin Profile Report =========================================== Report date: November 10, 2014 Theme name: Quadrum Premium Theme Pages browsed: 18 Avg. load time: 8.9535 sec Number of plugins: 6 Plugin impact: 38.54% of load time Avg. plugin time: 3.4504 sec Avg. core time: 2.0246 sec Avg. theme time: 3.3464 sec Avg. mem usage: 31.81 MB Avg. ticks: 4,628 Avg. db queries : 112.56 Margin of error : 0.1322 sec * Plugin list: =========================================== P3 (Plugin Performance Profiler) – 0.1159 sec – 3.36% Gravity Forms – 1.3901 sec – 40.29% Bulk Resize Media – 0.0693 sec – 2.01% WPBakery Visual Composer – 1.1636 sec – 33.72% Scroll To Top – 0.0098 sec – 0.28% Simple Ads Manager – 0.7017 sec – 20.34% * [jack randall](https://wordpress.org/support/users/theotherlebowski/) * (@theotherlebowski) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465858) * just for a quick experiment try activating the default wordpress theme and see if that makes a difference. i’ve had a look on google and there are a few posts here and there about the quadrum theme being a very slow loader… * Thread Starter [RubyA](https://wordpress.org/support/users/rubya/) * (@rubya) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465909) * > just for a quick experiment try activating the default wordpress theme and > see if that makes a difference. i’ve had a look on google and there are a few > posts here and there about the quadrum theme being a very slow loader… * Wow, yeah. disabling it makes my pagespeed score from google go from 32 to 61. This really sucks * [JLUKEMIAMI](https://wordpress.org/support/users/jlukemiami/) * (@jlukemiami) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465917) * Hi there I’m facing the same problem. I access management console, simply navigate through links. Doing this, memory occupation suddenly grows up and server stops. No big graphic stuffs, 8 GB MEMORY 2 CPU on Ubuntu 32 bit on VMWare. Can anyone help me? Thanks in advance. * [lisa](https://wordpress.org/support/users/contentiskey/) * (@contentiskey) * [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465932) * JLUKEMIAMI, please start a new topic. while your situation is similar, it’s not exactly same. will be easier for volunteers to help you with your issue if it is not mixed in with another issue. * remember to share link to your website which theme you are using which plugins you are using Viewing 11 replies - 1 through 11 (of 11 total) The topic ‘Website slow, using 100% cpu usage’ is closed to new replies. ## Tags * [cpu](https://wordpress.org/support/topic-tag/cpu/) * [usage](https://wordpress.org/support/topic-tag/usage/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 11 replies * 4 participants * Last reply from: [lisa](https://wordpress.org/support/users/contentiskey/) * Last activity: [11 years, 6 months ago](https://wordpress.org/support/topic/website-slow-using-100-cpu-usage/#post-5465932) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics