The WP server CPU usage went up suddenly.

Hi there @jayhan

Thank you for reaching out. I understand that a spike in server resources is registered, which points to WooCommerce regenerating images.

Could you clarify if this happened after a theme change, or maybe clicking the “Regenerate” button found in the WooCommerce > Status > Tools screen (used for regenerating shop thumbnails), please?

We will be standing by for your response.

Hi @anastas10s,

Thank you for your reply. I didn’t change the theme (Astra child) for a few years and didn’t click the Regenerate button. Actually, I didn’t know that there was a Regenerate button there.

Hello @jayhan,

First, I would like to note these are notices not errors. A notice just let’s you know that something may go wrong if you keep things the way they are in the future.

I checked your system status report and found a few possible candidate plugins that might cause such a problem, like the third-party blocks plugin.

You can try creating a staging environment using WP-STAGING, disable all plugins, then and activate them one by one to see which one is causing the noticer. I will also recommend switching to the Storefront theme when testing.

With that said, I don’t believe the notices above are what’s causing the spikes. I can see a few database-related error logs.

Here’s one of them:

[26-Dec-2022 20:04:01 UTC] WordPress database error Deadlock found when trying to get lock; try restarting transaction for query DELETE FROM wp_options WHERE option_name = '_transient_astra-theme-cron-test-ok' made by require('wp-blog-header.php'), wp, WP->main, do_action_ref_array('wp'), WP_Hook->do_action, WP_Hook->apply_filters, Astra_Theme_Background_Updater->install_actions, Astra_Theme_Background_Updater->test_cron, get_transient, delete_option, QM_DB->query


You can check this thread for more context.

Alternatively, you can share the error log link above with your host, perhaps they can help. ??

Cheers!