cpu frequency reported values

Question

I have a 4 socket server, running E5-4667v3. I have the power profile set to performance low-latency.

For reference: https://ark.intel.com/content/www/us/en/ark/products/85765/intel-xeon-processor-e5-4667-v3-40m-cache-2-00-ghz.html

Per Intel it's Base Frequency is 2.0 GHz and Max Turbo Frequency is 2.9 GHz.

in SLES 11.4 a cat /proc/cpuinfo shows cpu MHz: 2001.000 when completely idle or fully loaded.
in SLES 11.4 a dmidecode -t 4 shows Max Speed: 3600 MHz
in SLES 11.4 a lscpu shows CPU MHz: 2001.000
in RHEL 7.6 a cat /proc/cpuinfo shows values all around 3200 on 60 cores when an indentical system is crunching.
I have to get back to my rhel 7.6 system to get more numbers to see what's reported when completely idle.

I got some info from here: What is the correct way to view your CPU speed on Linux?

Is cat /proc/cpuinfo | grep "cpu MHz" a solid way to see the correct cpu operating frequency at a given moment? What is? For my RHEL 7.6 system, that's been running 100% for > 24 hours and I check cpu frequency and it's well above the published turbo frequency? I thought turbo frequency was temporary? If I kick off a MPI based job and say run on 60 of 64 total cores, how long should I expect cores to run above base frequency?

See an answer by @WinEunuuchs2Unix on the related post you provided. /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq should be the most accurate, as long as you have a cpufreq driver running (you should have). — Tgilgul, Apr 06 '20 at 16:12
Does this answer your question? What is the correct way to view your CPU speed on Linux? — maxschlepzig, Apr 25 '20 at 17:13
You can look at some CPU counters to compute the current real CPU frequency. — maxschlepzig, Apr 25 '20 at 17:16

cpu frequency reported values

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