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druber
New Contributor II

CPU usage in 'sessions widget' vs 'CPU' widget?

The firewall in question is a 40F running v6.4.9.  So the sessions widget is saying:

 

'Current sessions: 402 CPU: 83.6% SPU: 0.0% nTurbo: 16.6%'

 

The CPU number seems awful high since there isn't much going on at the moment.  What has me confused:

 

The 'CPU' widget shows CPU utilization fluctuating around 1%.  I'd appreciate any tips as to the discrepancy.

druber
druber
2 Solutions
Anthony_E
Community Manager
Community Manager

Hello druber,

 

Thank you for using the Community Forum.

I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.

 

Regards,

Anthony-Fortinet Community Team.

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FriedBacon
New Contributor II

Everything you're seeing there is normal. Dont be confused on the CPU Utilization (in your case 1%) and the Session Utilization CPU. The Session CPU your seeing is there (the 83.6%) means basically that 83.6% of your total no. of sessions that is processed by FortiGate is being handeld by your FortiGate's discreet CPU. In terms of CPU utilization; just look at 1%

If i were to put it in a sentence; currently your CPU usage is 1%, and 83.6% of your sessions is being handled by that 1% (among other services/daemons)

Here's a KB for it as well: https://community.fortinet.com/t5/FortiGate/Technical-Tip-Understanding-the-meaning-of-Session-CPU/t...
 

View solution in original post

4 REPLIES 4
Anthony_E
Community Manager
Community Manager

Hello druber,

 

Thank you for using the Community Forum.

I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.

 

Regards,

Anthony-Fortinet Community Team.
druber
New Contributor II

Ah, 1000 thanks.  That makes perfect sense!

druber
druber
Anthony_E
Community Manager
Community Manager

Hello druber,

 

I have found this documentation:

 

https://docs.fortinet.com/document/fortigate/6.2.3/cookbook/232929/troubleshooting-high-cpu-usage

 

Could you please tell me if it helps?

 

Regards,

Anthony-Fortinet Community Team.
FriedBacon
New Contributor II

Everything you're seeing there is normal. Dont be confused on the CPU Utilization (in your case 1%) and the Session Utilization CPU. The Session CPU your seeing is there (the 83.6%) means basically that 83.6% of your total no. of sessions that is processed by FortiGate is being handeld by your FortiGate's discreet CPU. In terms of CPU utilization; just look at 1%

If i were to put it in a sentence; currently your CPU usage is 1%, and 83.6% of your sessions is being handled by that 1% (among other services/daemons)

Here's a KB for it as well: https://community.fortinet.com/t5/FortiGate/Technical-Tip-Understanding-the-meaning-of-Session-CPU/t...
 

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