CPU frequency stuck at 1198 MHz after power outage on x86 server (RouterOS 7.x)

Hardware
1

Hi everyone,

I’m facing an unusual CPU behavior on my x86 RouterOS server (Ericsson CRU 0101 board) after a sudden power outage.

Before the outage, the system could easily handle 5 Gbps+ traffic without any issue.
Now, even at around 2 Gbps load, individual CPU cores (like cpu10, cpu36, etc.) spike abnormally, while total CPU usage remains low.

When I checked /system resource print, I noticed the CPU Frequency is stuck at 1198 MHz and never scales up, even under heavy load.

Here are the details:

  • CPU: Intel (48 cores)

  • Architecture: x86_64

  • Board: x86 Ericsson CRU 0101

  • Memory: 15.9 GiB

  • RouterOS Versions tested:

    • 7.18.2

    • 7.19.1

    • 7.19.4

    • 7.20

    • 7.20.1 (currently running)

The issue started only after the power outage. I suspect the CPU is throttled or stuck in a power-saving mode.

Has anyone experienced CPU frequency scaling issues on RouterOS 7.x (x86)?
Any suggestion on BIOS power settings (Intel SpeedStep, C-States, Turbo Boost, etc.) or RouterOS-level fix would be highly appreciated.

Thanks in advance,

2

My guess is that it's a motherboard/cooling issue.
I doubt RouterOS has anything to do with it, especially since RouterOS can't adjust anything about it...

A courtesy... If you find the problem, could you let us know?

Thanks.