Where to look.
IN CPANEL
Resource Usage shows your consumption against each limit, over time.
WHAT TO LOOK AT
Whether you are hitting any limit When it happens Whether it is constant or intermittent
THE TIMING QUESTION
- Constant: something about your site
- At specific times: a scheduled job, or a traffic pattern
- Random spikes: bot traffic, usually
WHAT THE GRAPHS TELL YOU
Which resource is the constraint.
Adding memory when the constraint is entry processes achieves nothing.
DISK AND INODES
Shown separately in the statistics panel.
Check both. Inodes exhaust before disk space in many accounts.
BANDWIDTH
Shown per month, resetting on your billing cycle.
WHAT TO DO WITH THE INFORMATION
Identify which limit, and when.
That determines what to fix.
BEFORE ASKING FOR AN UPGRADE
Look at this. Frequently the answer is visible here.