VoxiHost - Node Reboot for Guaranteed CPU Performance Baseline – Maintenance details

Hey, Daniel here!

I wanted to add a small additional note regarding the maintenance i performed. Today, I observed some weird behavior with the CPU frequency on the server node specifically, the clock speed was dropping dramatically, sometimes as low as 400 MHz, before instantly jumping back up to 4 GHz+.

I traced this issue to the default Energy Performance Preference (EPP) settings, which were aggressively trying to save power during minimal idle times. While good for laptops, on a server with many running VPS instances, this rapid frequency oscillation was causing a noticeable increase in latency and unpredictable performance.

I decided to fix this immediately, performing the necessary kernel changes overnight to only affect a small customer base during EU hours.

As my goal is to guarantee the best, most consistent performance possible for all our VPS customers, I have overridden the default power profile. The server is now locked to a high-performance profile with a guaranteed minimum baseline of 4.2 GHz, ensuring zero lag and maximum stability for your services.

The scheduled infrastructure maintenance is now complete. The Node's CPU control settings were updated successfully.

Maintenance Summary

The system's power-saving profile was switched to a guaranteed high-performance profile.

• Minimum Frequency (Baseline): 4.2 GHz

• Maximum Frequency (Turbo): 5.759 GHz

Benefit Summary

• Zero Latency Jitter: The deep idle state was eliminated, ensuring services receive instantaneous power when requested.

• Predictable Consistency: The Node now maintains a 4.2 GHz baseline, minimizing performance variance across all virtual machines.

We are making sure that configuration was applied correctly, all VPS servers are back working.