CloudLinux gives every cPanel account on your reseller plan its own share of CPU, memory and disk speed, so one busy site can't slow down the others. This guide explains what each limit means, which plans let you change them in CloudLinux Manager, and the maximum you can set on each plan.
What each limit means
| Limit | What it controls | Example |
|---|---|---|
| CPU | Share of processor time. 100% equals one full CPU core. | 125% = 1.25 cores |
| PMEM | Physical memory (RAM) the account can use. | 4 GB PMEM = 4 GB of RAM |
| I/O | Disk read/write speed. | 1 MB/s ≈ 8 Mbps of disk throughput |
| IOPS | Disk read/write operations per second. | 512 IOPS = 512 operations a second |
| EP | Entry processes: requests handled at the same time (for example PHP pages loading at once). | 25 EP = 25 simultaneous requests |
| NPROC | Total processes running at once (web, cron jobs, mail, SSH). | 50 NPROC = 50 processes |
When an account reaches a limit it is slowed down (throttled) until usage drops, rather than taking the whole server with it.
Which plans include CloudLinux Manager
With CloudLinux Manager you can set these limits yourself for every hosting package and account you create.
| Plan | CloudLinux Manager | Edit limits |
|---|---|---|
| Reseller Starter | No | No (fixed limits, see below) |
| Reseller Advance, Business, Supreme | Yes | Yes |
| VIP Master Reseller: Starter, Advance, Business, Supreme | Yes | Yes |
Maximum limits per package or account
These are the highest values you can give a single package or cPanel account on each plan.
Reseller hosting
| Plan | CPU | PMEM | I/O | IOPS | EP | NPROC |
|---|---|---|---|---|---|---|
| Advance | 125% (1.25 cores) | 4 GB | 25 MB/s | 512 | 25 | 50 |
| Business | 250% (2.5 cores) | 8 GB | 35 MB/s | 1024 | 50 | 100 |
| Supreme | 400% (4 cores) | 12 GB | 50 MB/s | 2048 | 100 | 200 |
VIP Master Reseller hosting
| Plan | CPU | PMEM | I/O | IOPS | EP | NPROC |
|---|---|---|---|---|---|---|
| VIP Starter | 175% (1.75 cores) | 4 GB | 25 MB/s | 512 | 25 | 50 |
| VIP Advance | 250% (2.5 cores) | 8 GB | 50 MB/s | 1024 | 50 | 100 |
| VIP Business | 400% (4 cores) | 16 GB | 100 MB/s | 2048 | 75 | 150 |
| VIP Supreme | 600% (6 cores) | 24 GB | 100 MB/s | 4096 | 150 | 300 |
Reseller Starter: fixed limits
Reseller Starter has no CloudLinux Manager. Every account on it gets these fixed limits, which can't be changed:
| CPU | PMEM | I/O | IOPS | EP | NPROC | Inodes |
|---|---|---|---|---|---|---|
| 70% | 2 GB | 5 MB/s | 128 | 20 | 35 | Unlimited |
Note: Inodes are unlimited on every reseller plan, Starter included, so there is no cap on the number of files and folders in an account.
Change the limits
On a plan with CloudLinux Manager:
- Log in to WHM and open Plugins → CloudLinux Manager.
- To change a whole package, open Packages, click the pencil icon, set the limits and click Save.
- To change one account, open Users, click the pencil icon next to it, set the limits and click Save.
The full walkthrough with screenshots is in Set package and user limits in CloudLinux Manager.
Warning: Keep every package and account within your plan's maximum above. Values above the maximum are refused or flagged with a warning.
Tip: A user row shown in red only means that account's limits differ from its package. It is a visual reminder and does not affect how the account runs.
Next steps
- Need higher limits? Compare the Reseller and VIP Master Reseller plans, or read Reseller vs Master Reseller hosting.
- Questions about your limits? Open a ticket or chat with us, 24/7.