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

System Under Maintenance

Node Reboot for Guaranteed CPU Performance Baseline

Completed
Scheduled for 2025/11/04 at 23:00:00 – 23:12:00

Affects

VPS Nodes

Under maintenance from 11:00 PM to 11:12 PM

Node #1 (Germany/FRA)

Under maintenance from 11:00 PM to 11:12 PM

Inne

Under maintenance from 11:00 PM to 11:12 PM

Strona Główna

Under maintenance from 11:00 PM to 11:12 PM

VPS Panel

Under maintenance from 11:00 PM to 11:12 PM

Updates
  • Update
    2025/11/04 at 23:12:00
    Update
    2025/11/04 at 23:12:00

    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.

  • Completed
    2025/11/04 at 23:11:00
    Completed
    2025/11/04 at 23:11:00

    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.

  • Update
    2025/11/04 at 23:10:00
    Update
    2025/11/04 at 23:10:00

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

  • In progress
    2025/11/04 at 23:00:01
    In progress
    2025/11/04 at 23:00:01
    Maintenance is now in progress
  • Planned
    2025/11/04 at 23:00:00
    Planned
    2025/11/04 at 23:00:00

    Impact: Users will experience a brief, single service interruption as the server node performs a necessary reboot.

    Reason for Reboot: We are updating the server's kernel configuration to switch the CPU from an energy-saving profile to a performance-guaranteed profile. This crucial change ensures the system strictly maintains a 4.2 GHz minimum clock speed for predictable, low-latency VM performance. Crucially, the system retains the ability to dynamically boost up to 5.7 GHz when needed for demanding tasks.

    We apologize for the brief downtime and are committed to maximizing the reliability of your services.