High CPU & RAM usage on newly fresh install Cyberpanel

Cyberpanel OS: Ubuntu 24.04 LTS
Current Version: 2.4
Build: 4
Current Commit: 4408ca04c8798966f679d1a1b8254b0f6d660aeb
Latest Version: 2.4
Latest Build: 4
Latest Commit: 4408ca04c8798966f679d1a1b8254b0f6d660aeb

My Cyberpanel CPU & RAM usage is very high. What is the reason that caused that to happen?

Yes, these are stats for a new cyberpanel installations without any website or app running. What actions can I take to resolve this?

I experienced a very similar issue on a server. After reviewing the resource usage, I found that the problem was mainly caused by two factors:

1. High CPU usage from MariaDB.
2. Overload from the FPM-PHP process.

By default, in CyberPanel, the PHP-FPM service is limited to a maximum of 5 child processes. When it attempted to open 6 or more, the website would become extremely slow or completely unresponsive.

To fix this, I applied a custom optimization to both MariaDB and PHP-FPM, adjusting connection limits, buffer sizes, and process parameters. This stabilized the server and significantly reduced CPU load.

I recommend checking whether your issue might be related to the same behavior.
If you need assistance, I can help you directly as a Linux systems administrator, at an affordable cost.
You can contact me on WhatsApp: Share on WhatsApp

Best regards,
Jesús Suárez
Linux Systems Administrator

Does cyberpanel still not fully support Ubuntu 24.04 LTS? CPU in shell looks ok.

While CyberPanel can technically run on low-resource servers, in practice it’s best to have at least 32 GB of RAM for stable and efficient performance.

From the image, it’s clear that Elasticsearch is consuming most of the memory, which is expected — this service typically requires a minimum of 8 GB of dedicated RAM just to operate properly. On top of that, you also need RAM for the operating system, hosted websites, and CyberPanel itself.

So, having only 8 GB of RAM is definitely insufficient for this kind of workload.
I’d recommend upgrading the server’s memory to improve performance and overall stability.