| Solution |
Sometimes, one Core CPU can show high usage, but that does not mean there is a high CPU usage.
From FortiGate GUI, go underDashboard -> Status -> Select the CPU graph:
Select 'Show per core CPU usage', and for instance, it is possible to see:
It is possible to get more detailed information through the CLI:
chameleon-kvm97 # get system performance status
CPU states: 0% user 1% system 0% nice 99% idle 0% iowait 0% irq 0% softirq
CPU0 states: 0% user 1% system 0% nice 99% idle 0% iowait 0% irq 0% softirq
Memory: 2041668k total, 1404988k used (68.8%), 409480k free (20.1%), 227200k freeable (11.1%)
Average network usage: 347 / 531 kbps in 1 minute, 273 / 55 kbps in 10 minutes, 281 / 20 kbps in 30 minutes
Maximal network usage: 1989 / 4204 kbps in 1 minute, 2621 / 4204 kbps in 10 minutes, 2626 / 4204 kbps in 30 minutes
Average sessions: 64 sessions in 1 minute, 47 sessions in 10 minutes, 46 sessions in 30 minutes
Maximal sessions: 77 sessions in 1 minute, 77 sessions in 10 minutes, 78 sessions in 30 minutes
Average session setup rate: 0 sessions per second in last 1 minute, 0 sessions per second in last 10 minutes, 0 sessions per second in last 30 minutes
Maximal session setup rate: 3 sessions per second in last 1 minute, 5 sessions per second in last 10 minutes, 23 sessions per second in last 30 minutes
Average NPU sessions: 0 sessions in last 1 minute, 0 sessions in last 10 minutes, 0 sessions in last 30 minutes
Maximal NPU sessions: 0 sessions in last 1 minute, 0 sessions in last 10 minutes, 0 sessions in last 30 minutes
Virus caught: 0 total in 1 minute
IPS attacks blocked: 0 total in 1 minute
Uptime: 11 days, 2 hours, 47 minutes
diagnose sys mpstat 2
Gathering data, wait 2 sec, press any key to quit.
..0..1
TIME CPU %usr %nice %sys %iowait %irq %soft %steal %idle
04:23:08 AM all 0.50 0.00 0.50 0.00 0.50 0.50 0.00 98.00
0 0.50 0.00 0.50 0.00 0.50 0.50 0.00 98.00
TIME CPU %usr %nice %sys %iowait %irq %soft %steal %idle
04:23:10 AM all 9.00 0.00 2.00 0.00 0.50 1.00 0.00 87.50
0 9.00 0.00 2.00 0.00 0.50 1.00 0.00 87.50
TIME CPU %usr %nice %sys %iowait %irq %soft %steal %idle
04:23:12 AM all 0.50 0.00 0.00 0.00 0.50 1.00 0.00 98.00
0 0.50 0.00 0.00 0.00 0.50 1.00 0.00 98.00
TIME CPU %usr %nice %sys %iowait %irq %soft %steal %idle
04:23:14 AM all 0.50 0.00 0.50 0.00 0.50 0.50 0.50 97.52
0 0.50 0.00 0.50 0.00 0.50 0.50 0.50 97.52
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