Questions[cpuinfo](ubuntu)

I have a new intel i7-9700k running in ubuntu 20.04. This processor should clock at base frequency 3.6 GHz with maximum frequency 4.9 GHz in overclocking.

I did an expensive computation today and took a look at the clock frequencies with

watch -n.1 "cat /proc/cpuinfo | grep \"^[c]pu MHz\""

and the cpu kernels clocked at ~4.5 GHz. How can this be? I didn't change the BIOS settings? The temperatures where in the normal range according to lm-sensors (below 80 'C mostly). By demand :

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver

returns

intel_pstate
intel_pstate
intel_pstate
intel_pstate
intel_pstate
intel_pstate
intel_pstate
intel_pstate

and

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

returns

powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave

I have recently acquired a number of embedded touch screen computers to tinker with. One of them has two CPUs in one machine. I have managed to install and run various versions of Ubuntu and other operating systems; however, none seem to be able to see both CPUs in my installed machine. How do I allow my operating system to see both CPUs? I should note the system has 2 sockets Pentium m 1.4 and I have tried ubuntu mate 32 bit , lubuntu 32 bit, ubuntu and bodhi linux legacy

i have a question about my actual number of cpus on my machine. Different methods give me different results...

htop shows 4 cores working

lscpu | grep CPU\(s\): shows 4

cat /proc/cpuinfo | grep processor shows 4

cat /proc/cpuinfo | grep "cpu cores" | uniq shows 2

sensors | grep Core shows 2

i'm a bit lost...

EDIT:

cat /proc/cpuinfo | grep 'model name'
model name  : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz

I've had an issue over the last few days with high CPU usage. It's at a very constant ~60%. I have tried using htop to identify the culprit, but unfortunately the command section is blank (as below) is there any other way to find out what is causing this?

top -bn1 -o %CPU | head -10

1. top - 07:52:10 up  8:26,  1 user,  load average: 16.81, 17.01, 17.01
2. Tasks: 1281 total,   3 running, 1278 sleeping,   0 stopped,   0 zombie 3 .%Cpu(s): 59.6 us,  0.9 sy,  0.0 ni, 39.2 id,  0.2 wa,  0.0 hi,  0.1 si,  0.0 st
4. KiB Mem : 13191574+total, 55804160 free,  4702116 used, 71409464 buff/cache
5. KiB Swap:  2146300 total,  2146300 free,        0 used. 12626230+avail Mem

1.  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
2.  35229 root      20   0  201640  33364      8 S  1606  0.0   7201:29 kcompactd0
3. 190779 www-data  20   0   34428   2864   2520 R  27.8  0.0   0:00.05 ps
4. 190766 chrisha+  20   0   42908   4632   3096 R  16.7  0.0   0:00.05 top

Samples: 624K of event 'cycles:pp', Event count (approx.): 47188610547560
Children      Self  Command          Shared Object                   Symbol
43.52%    43.52%  khugepaged       perf-2148.map                   [.] 0x00007f043ea0451c
34.95%     0.00%  khugepaged       [unknown]                       [k] 0xb82697d57384ff
23.33%     0.00%  swapper          [kernel.kallsyms]               [k] cpu_startup_entry
23.33%     0.00%  swapper          [kernel.kallsyms]               [k] call_cpuidle
23.33%     0.00%  swapper          [kernel.kallsyms]               [k] cpuidle_enter
23.33%     0.00%  swapper          [kernel.kallsyms]               [k] cpuidle_enter_state
23.33%    23.33%  swapper          [kernel.kallsyms]               [k] intel_idle
23.33%     0.00%  swapper          [kernel.kallsyms]               [k] start_secondary
8.61%     8.61%  khugepaged       perf-2148.map                   [.] 0x00007f043ea045a9
6.26%     6.26%  khugepaged       perf-2148.map                   [.] 0x00007f043ea04562
6.26%     6.26%  khugepaged       perf-2148.map                   [.] 0x00007f043ea044d5
4.66%     0.00%  khugepaged       [unknown]                       [.] 0x60da8b8ebfc1e9d3
4.10%     4.10%  khugepaged       perf-2148.map                   [.] 0x00007f043ea044d9
2.33%     0.00%  khugepaged       [unknown]                       [.] 0x53c4485f4ccc81a7
2.05%     2.05%  khugepaged       perf-2148.map                   [.] 0x00007f043ea04551
2.04%     2.04%  khugepaged       perf-2148.map                   [.] 0x00007f043ea04582
2.04%     2.04%  khugepaged       perf-2148.map                   [.] 0x00007f043ea04432
2.04%     0.00%  khugepaged       [unknown]                       [.] 0xe7fae4d7797426a3
2.04%     0.00%  khugepaged       [unknown]                       [.] 0x99ed63e52813389a
2.04%     0.00%  khugepaged       [unknown]                       [.] 0x22e88046aa4271e9
2.04%     0.00%  khugepaged       [unknown]                       [.] 0xf6b61756079b9307
2.04%     0.00%  khugepaged       [unknown]                       [.] 0xf495f49b38bfec81
2.04%     0.00%  khugepaged       [unknown]                       [.] 0x2f82447c2be2c54e
2.04%     0.00%  khugepaged       [unknown]                       [.] 0x8d6771a1474a5986
2.04%     0.00%  khugepaged       [unknown]                       [.] 0xbbb91e1e0f7a63c3
2.04%     0.00%  khugepaged       [unknown]                       [.] 0x3c46bf1036aee583
2.04%     0.00%  khugepaged       [unknown]                       [.] 0xd9cacbeba97900c4
2.04%     0.00%  khugepaged       [unknown]                       [.] 0x25ea1d64a14a6a3a
2.04%     0.00%  khugepaged       [unknown]                       [.] 0x909e31f7d38dbe07
2.04%     0.00%  khugepaged       [unknown]                       [.] 0x315aba88ba39c812
2.04%     0.00%  khugepaged       [unknown]                       [.] 0xe8cbb184c0edf584
2.04%     0.00%  khugepaged       [unknown]                       [.] 0xefa017bde7f04534
1.78%     0.00%  khugepaged       [unknown]                       [.] 0x9e902574c17241ad
1.56%     0.00%  perf             perf                            [.] 0xffffffffffc5e123

sudo ls -l /proc/23870/exe

lrwxrwxrwx 1 root root 0 May 18 01:28 /proc/23870/exe -> /tmp/oom_reaper

Tried to force CPU to run at max speed after it refused to do so under times when CPU usage definitely should be at max, did so by manually setting governor to 'performance'. This didn't work, CPU continued to run between 2.2-3.0 GHz out of the 3.2GHz allowed. After setting the minimum frequency for the 'performance' governor to 3.2GHz, this is what I get when I run cpufreq-info:

link to scrot

policy is that frequency should be between 3.2GHz and 3.2GHz, but four out of four cores are running at somewhere between 2.8 and 3.0 GHz.

Any help is appreciated.