# The CPU value in the output of the "cpstat os -f cpu" command is not correct

## Product
- IPS

## Version
- R80.40 (EOS)
- R81 (EOS)
- R81.10 (EOS)
- R81.20

## OS
- Gaia

## Platform
- 5000 (EOL)

## Last Modified
- 2026-04-27

## Symptoms
- The idle time period appears to be normal, but the actual CPU output is consistently incorrect, always maintaining the same value. Even when the CPU usage is at 90-100%, the output from the command remains constant.
- The output of the "cpstat os -f cpu" command is inaccurate.
- However, when inspecting the output of "cpstat os -f multi_cpu", the value is correct.

## Cause
In a setup with multiple CPUs, the problem comes from a mistake in how CPU values are calculated. In a single CPU system, values are taken directly from _/proc/stat_. In a multi-CPU configuration, the issue arises because the cumulative amount repeatedly increases. Both SNMP and _cpstat_ use this incorrect method, adding to the problem.

## Solution
This problem was fixed. The fix is included in:
- [Check Point R82](https://support.checkpoint.com/results/sk/sk181127)
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 43

If you choose not to upgrade, Check Point can supply a **Hotfix**. [Contact Check Point Support](https://www.checkpoint.com/support-services/.contact-support/) to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.

For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**
Refer to [sk168597 - How to install a Hotfix](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).

#### NOTE
This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

## Article Properties
- Access Level: General
- Status: Approved by TAC
- Date Created: 2023-05-17
- Last Modified: 2026-04-27