cPanel’s Resource Usage interface can show whether an account has reached its CloudLinux resource limits. Compare those records with the time of a slow page or error to see whether resource limits contributed to it.
Review resource history
- Log in to cPanel and open Metrics > Resource Usage.
- Read the summary, then open Details or Current Usage.
- Select the time range covering the reported problem.
- Compare recorded usage, limits and faults for CPU, memory, input/output and processes where available.
A fault indicates a limit was reached. A summary with no recorded limit issue does not prove the website is optimised or explain every performance problem.
Inspect available snapshots
- Open Snapshots.
- Select an incident near the affected time.
- Review the recorded processes and, where available, database or HTTP queries.
- Note recurring scripts or requests for further investigation.
CPU percentages can be measured against one core, so a value above 100% is not by itself proof of overload. Compare it with the account’s actual limit and duration. A snapshot shows activity at a point in time and does not establish the cause on its own.
Investigate the cause
Check application logs, scheduled jobs, traffic patterns and slow queries against the same period. Test any application change and compare the results. If the interface is unavailable, ask whether the hosting account provides CloudLinux resource reporting.