Actual CPU core frequency

[Markfree]

Hi guys.

I'm using a RT-AC86U and tried to see the actual CPU core frequency through CPUinfo, but it isn't available.
CPUinfo only shows 100 for BogoMIPS.

# cat /proc/cpuinfo
processor : 0
BogoMIPS : 100.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x42
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x100
CPU revision : 0

processor : 1
BogoMIPS : 100.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x42
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x100
CPU revision : 0

Reading about BogoMIPS, it seems to be reflecting the timer frequency, not the CPU's core frequency.

Trying NVRAM does not show core frequency as well.

# nvram get clkfreq
#

So, I tried greping with DMESG but could not see any CPU frequency.

# dmesg | grep --color CPU
Booting Linux on physical CPU 0x0
CPU: AArch64 Processor [420f1000] revision 0
Detected VIPT I-cache on CPU0
PERCPU: Embedded 15 pages/cpu @ffffffc01ffd6000 s21376 r8192 d31872 u61440
RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
CPU1: Booted secondary processor
Detected VIPT I-cache on CPU1
Brought up 2 CPUs
CPU: All CPU(s) started at EL2
Creating Enet CPU ring for queue number 1 with 512 packets,Descriptor base=ffffff800025d000, physical=0x1ea0c000
Creating Enet CPU ring for queue number 0 with 512 packets,Descriptor base=ffffff8000261000, physical=0x1ea10000
broadcomThermalDrv brcm-therm: init (CPU count 2 2 2 2)
Creating CPU ring for queue number 7 with 128 packets descriptor=0xffffffbffc27d158
Creating CPU ring for queue number 0 with 1024 packets descriptor=0xffffffbffc54bcc0
Creating CPU ring for queue number 1 with 1024 packets descriptor=0xffffffbffc54bcf0
Creating CPU ring for queue number 1 with 128 packets descriptor=0xffffffbffc27ce58
Creating CPU ring for queue number 2 with 1024 packets descriptor=0xffffffbffc54bd20
Creating CPU ring for queue number 3 with 1024 packets descriptor=0xffffffbffc54bd50

Where can I find the actual CPU core frequency?
And where does the WEBUI collects it?

Thanks

 

[RMerlin]

Where can I find the actual CPU core frequency?

You can't, it's not reported anywhere.

And where does the WEBUI collects it?

Based on the knowledge of what CPU is in the router.