Title: memory exhausted Last modified: June 21, 2021 --- # memory exhausted * Resolved [m440](https://wordpress.org/support/users/m440/) * (@m440) * [5 years ago](https://wordpress.org/support/topic/memory-exhausted-12/) * Hi, * I really like the plugin because you can tune a lot of things to improve the usability which other optimizers lack. (Esp. FCP and LCP optimizations). * But on a clients’ site the memory usage gets multiplied by 10 if I turn on Hummingbird. I go from like 45MB to 450MB for each page request. Upgrading the memory_limit helps but quite regularly the infamous “memory exhausted” fatal error occurs. And I think 500MB for a memory_limit is not efficient and maybe can cause stability problems. * Are there any known plugin/theme conflicts which are causing this? * Thanks! Viewing 4 replies - 1 through 4 (of 4 total) * Plugin Support [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * (@wpmudev-support9) * [5 years ago](https://wordpress.org/support/topic/memory-exhausted-12/#post-14581522) * Hi [@m440](https://wordpress.org/support/users/m440/), * Thank you for contacting us. * Sorry to hear you are having this trouble. It may be possible the usage is being caused by another plugin or theme. In order to check this for you, could you please provide us with the URL of your site so that we can verify this further. * Best, Jonathan S * Thread Starter [m440](https://wordpress.org/support/users/m440/) * (@m440) * [5 years ago](https://wordpress.org/support/topic/memory-exhausted-12/#post-14587368) * Hi Jonathan, * Thank you for your quick response. Yes, I think that could be the cause. * The site address is: [https://www.uniquematch.nl](https://www.uniquematch.nl) * For your convenience I double-checked the problem again and the the memory usage reported by the plugin ‘UsageDD’ increases from 45MB to 490MB for, by example, the frontpage. If I use the special link “?avoid-minify=true” the memory goes back to 45MB again. * The theme used is Workio by ApusWP (using the Apus framework). * The active plugins are: - Advanced Custom Fields Versie 5.9.6 door Elliot Condon - Advanced Post List Versie 0.5.6.1 door EkoJR - Apus Framework Versie 2.1 door Team ApusTheme - Carerix Versie 2.21.2 door Carerix - CMB2 Versie 2.9.0 door CMB2 team - Contact Form 7 Versie 5.4.1 door Takayuki Miyoshi - Elementor Versie 3.2.4 door Elementor.com - Elementor – Header, Footer & Blocks Versie 1.5.9 door Brainstorm Force, Nikhil Chavan - Elementor Pro Versie 3.3.0 door Elementor.com - Essential Addons for Elementor Versie 4.7.1 door WPDeveloper - Facebook for WordPress Versie 3.0.5 door Facebook - Google Analytics for WordPress by MonsterInsights Versie 7.17.0 door MonsterInsights - HT Mega – Absolute Addons for Elementor Page Builder Versie 1.5.9 door HasThemes - JetEngine Versie 2.8.2 door Crocoblock - Loco Translate Versie 2.5.2 door Tim Whitlock (Nieuwste versie: 2.5.3) - MC4WP: Mailchimp for WordPress Versie 4.8.5 door ibericode - MetaSlider Versie 3.20.3 door MetaSlider - Mopinion Feedback Form Versie 1.1.1 door Kees Wolters - NotificationX Versie 1.9.4 door WPDeveloper - Really Simple SSL Versie 4.0.15 door Really Simple Plugins - Search & Filter Versie 1.2.14 door Code Amp - Show Current Template Versie 0.4.6 door JOTAKI Taisuke - UpdraftPlus – Backup/Restore Versie 1.16.56 door UpdraftPlus.Com, DavidAnderson - UsageDD Versie 1.4.7 door Dion Designs - Wordfence Security Versie 7.5.4 door Wordfence - WP-ServerInfo Versie 1.66 door Lester ‘GaMerZ’ Chan - WP Job Board Versie 2.1.9 door Habq - WP Private Message Versie 1.0.4 door Habq - Yoast Duplicate Post Versie 4.1.2 door Enrico Battocchi & Team Yoast - Yoast SEO Versie 16.4 door Team Yoast * I hope you can find something! - This reply was modified 5 years ago by [m440](https://wordpress.org/support/users/m440/). * Plugin Support [Patrick – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport12/) * (@wpmudevsupport12) * [5 years ago](https://wordpress.org/support/topic/memory-exhausted-12/#post-14592017) * Hi [@m440](https://wordpress.org/support/users/m440/) * Thank you for the plugin list. * It is hard to point which plugin could conflict only looking at the plugin list so we need to run some tests. * Can you check this? * – Please, verify if the Hummingbird > Caching preload is enabled, if so, disable it to confirm it isn’t causing the problem. * – Check if your PHP is 7.4, you can find the WordPress > Tools > Site Health for any missing PHP Module or recommendation. * – If both above are ok, try to reset the plugin to factory data on Hummingbird > Settings > Data, it can help in some cases too. * In case the problem persists, please, take a full backup or create a staging website and run a plugin conflict test following this test flow: * [https://wpmudev.com/wp-content/uploads/2015/09/Support-Process-Support-Process.gif](https://wpmudev.com/wp-content/uploads/2015/09/Support-Process-Support-Process.gif) * Let us know the result you got. Best Regards Patrick Freitas * Plugin Support [Patrick – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport12/) * (@wpmudevsupport12) * [5 years ago](https://wordpress.org/support/topic/memory-exhausted-12/#post-14613611) * Hi [@m440](https://wordpress.org/support/users/m440/) * I hope you are doing well and safe! * We haven’t heard from you in a while, I’ll mark this thread as resolved. * Feel free to let us know if you have any additional questions or problems. * Best Regards Patrick Freitas Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘memory exhausted’ is closed to new replies. * ![](https://ps.w.org/hummingbird-performance/assets/icon-256x256.gif?rev=2633221) * [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN](https://wordpress.org/plugins/hummingbird-performance/) * [Frequently Asked Questions](https://wordpress.org/plugins/hummingbird-performance/#faq) * [Support Threads](https://wordpress.org/support/plugin/hummingbird-performance/) * [Active Topics](https://wordpress.org/support/plugin/hummingbird-performance/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/hummingbird-performance/unresolved/) * [Reviews](https://wordpress.org/support/plugin/hummingbird-performance/reviews/) ## Tags * [exhausted](https://wordpress.org/support/topic-tag/exhausted/) * [memory_limit](https://wordpress.org/support/topic-tag/memory_limit/) * 4 replies * 3 participants * Last reply from: [Patrick – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport12/) * Last activity: [5 years ago](https://wordpress.org/support/topic/memory-exhausted-12/#post-14613611) * Status: resolved