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cGroup resource limits

Stop noisy neighbors with package-based CPU, memory, IO, and process controls powered by Linux cGroups v2.

Packages

Package-based control that sticks

Create reusable limit packages for shared, reseller, and premium tiers. Apply defaults globally, map to panel plans, or override individual accounts when needed.

  • CPU quota (percentage of CPU time)
  • Memory high (throttle) and max (hard limit)
  • IO read/write bandwidth
  • IOPS read/write caps
  • Tasks / PID maximums
  • Entry processes (EP) style concurrency limits
Resource packages configuration in Simuzo
Visibility

Observe what you enforce

Limits without observability create guesswork. Simuzo pairs packages with live and historical metrics.

Current stats

Live CPU, RAM, IO, PIDs, and EP across users—including DB-attributed metrics when governor is active.

History

Configurable collection interval and retention for capacity trends and plan design.

Faults & top consumers

See who hits limits and who drives load so you can upgrade plans or investigate abuse.

Simuzo statistics dashboard
Enforcement

Process assignment that keeps limits real

simuzo-procmon helps keep user processes in the correct cgroup hierarchy so limits apply to web, cron, and other workloads consistently.

  • CLI reload for fleet-wide package updates
  • Plan defaults plus per-user overrides
  • Works alongside SimuzoFS isolation
FAQ

Common questions

Which controllers are supported?

Simuzo uses Linux cGroups v2 controllers for CPU, memory, IO (bandwidth and IOPS), and PIDs, plus entry-process tracking for concurrent connection style limits.

Can limits differ by hosting plan?

Yes. Define packages (including a default) and map them to panel plans or set custom per-user overrides that take priority.

How do I see who is hitting limits?

Use Statistics for live usage, historical trends, fault records, and top consumers—then adjust packages or investigate noisy accounts.

Ready to secure your hosting nodes?

Install Simuzo on your panel server, enable isolation and limits, and give users a safer multi-tenant environment.

Product news, security improvements, and release notes for hosting providers.