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Need this feature enabled?

If this feature is not enabled for your project and you need it, open a support ticket to request activation.
For applications or services that need to scale to large resources and have performance guarantees, Upsun offers Guaranteed resources (Guaranteed CPU). Guaranteed CPU ensure that your app or service receives dedicated access to the specified amount of CPU and RAM. These resources are reserved exclusively for your container. This kind of allocation provides performance close to dedicated infrastructure, ideal for:
  • Backend services
  • Real-time APIs
  • Load testing
  • High-traffic production application containers
  • Resource-intensive services (e.g. database, search engine)
  • Any container requiring large resource allocations with consistent and predictable performance

Region availability

Guaranteed CPU is not supported on OVHcloud regions, and some sizes may not be available for all regions.

Enable Guaranteed CPU

  1. Open your project.
  2. Click the Configure resources button from the Allocated resources block.
  3. For each app/service:
    • Select Guaranteed or Shared as the resource type.
    • Choose the desired CPU and RAM combination.
    • Enter the amount of Disk/Storage to allocate.
  4. Click Save. Saving will rebuild your environment, which may cause temporary downtime.
You cannot enable Guaranteed CPU if your container profile is set to HIGHER_MEMORY.

Pause environments with Guaranteed CPU

When any app or service in an environment uses Guaranteed CPU, that environment cannot be paused automatically or manually. This is because, with Guaranteed CPU, you’re billed for the reserved CPU and memory, so allowing pause functionality would lead to potential overuse of reserved compute and incorrect billing.

To pause the environment again:

  1. Switch all containers using Guaranteed CPU back to shared mode.
  2. Once no containers are using Guaranteed CPU, the environment can be paused as usual.
You can upscale to Guaranteed CPU even if the environment is currently paused. Doing so will automatically resume the environment and apply the changes.

Guaranteed CPU container sizes

The following table lists the available CPU and memory configurations for containers using Guaranteed CPU. These container profiles (HIGH_CPU, BALANCED, HIGH_MEMORY, and HIGHER_MEMORY) ensure consistent performance by allocating dedicated compute resources to your services.
CPUHIGH_CPUBALANCEDHIGH_MEMORYHIGHER_MEMORY
48 GB16 GB32 GBnot supported
816 GB32 GB64 GBnot supported
1632 GB64 GB128 GBnot supported
3264 GB128 GB256 GBnot supported
4896 GB192 GB384 GBnot supported
64128 GB256 GB512 GBnot supported
Guaranteed CPU is not currently available on OVHcloud regions and some CPU sizes may not be available in all regions.For more information about the available configurations and sizes, visit the Upsun pricing calculator.
Last modified on March 10, 2026