# Only Using (Seeing) Single CPU Core

**URL:** <https://forums.suse.com/t/only-using-seeing-single-cpu-core/36028>\
**Category:** Rancher 1.x\
**Created:** [November 1, 2021, 6:38pm UTC](https://forums.suse.com/t/only-using-seeing-single-cpu-core/36028 "2021-11-01T18:38:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![bzowk](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/bzowk/32/5508_2.png) [@bzowk](https://forums.suse.com/u/bzowk)\
**Post date:** [November 1, 2021, 6:38pm UTC](https://forums.suse.com/t/only-using-seeing-single-cpu-core/36028/1 "2021-11-01T18:38:42Z")

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Hey Guys -

I’ve got an older dev system running RancherOS v1.5.4 which I need some help with, please. I recently noticed that system load was running at about 1.5 on average and thought I’d check to see what the OS was seeing for CPU. Below is the output of a few commands which seem to show that only a single core is being used on the Intel(R) Core™ i5-6300U CPU @ 2.40GHz.

Any suggestions to get it to see the 2nd core?

**lscpu**

> Architecture: x86\_64  
> CPU op-mode(s): 32-bit, 64-bit  
> Byte Order: Little Endian  
> CPU(s): 1  
> On-line CPU(s) list: 0  
> Thread(s) per core: 1  
> Core(s) per socket: 1  
> Socket(s): 1  
> NUMA node(s): 1  
> Vendor ID: GenuineIntel  
> CPU family: 6  
> Model: 78  
> Model name: Intel(R) Core™ i5-6300U CPU @ 2.40GHz  
> Stepping: 3  
> CPU MHz: 500.001  
> CPU max MHz: 2400.0000  
> CPU min MHz: 400.0000  
> BogoMIPS: 4992.00  
> Virtualization: VT-x  
> L1d cache: 32K  
> L1i cache: 32K  
> L2 cache: 256K  
> L3 cache: 3072K  
> NUMA node0 CPU(s): 0  
> Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant\_tsc art arch\_perfmon pebs bts rep\_good nopl xtopology nonstop\_tsc cpuid aperfmperf tsc\_known\_freq pni pclmulqdq dtes64 monitor ds\_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4\_1 sse4\_2 x2apic movbe popcnt tsc\_deadline\_timer aes xsave avx f16c rdrand lahf\_lm abm 3dnowprefetch cpuid\_fault epb invpcid\_single pti ibrs ibpb stibp tpr\_shadow vnmi flexpriority ept vpid fsgsbase tsc\_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel\_pt xsaveopt xsavec xgetbv1 xsaves dtherm arat pln pts hwp hwp\_notify hwp\_act\_window hwp\_epp

**cat /proc/cpuinfo**

> processor : 0  
> vendor\_id : GenuineIntel  
> cpu family : 6  
> model : 78  
> model name : Intel(R) Core™ i5-6300U CPU @ 2.40GHz  
> stepping : 3  
> microcode : 0xc2  
> cpu MHz : 500.001  
> cache size : 3072 KB  
> physical id : 0  
> siblings : 1  
> core id : 0  
> cpu cores : 1  
> apicid : 0  
> initial apicid : 0  
> fpu : yes  
> fpu\_exception : yes  
> cpuid level : 22  
> wp : yes  
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant\_tsc art arch\_perfmon pebs bts rep\_good nopl xtopology nonstop\_tsc cpuid aperfmperf tsc\_known\_freq pni pclmulqdq dtes64 monitor ds\_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4\_1 sse4\_2 x2apic movbe popcnt tsc\_deadline\_timer aes xsave avx f16c rdrand lahf\_lm abm 3dnowprefetch cpuid\_fault epb invpcid\_single pti ibrs ibpb stibp tpr\_shadow vnmi flexpriority ept vpid fsgsbase tsc\_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel\_pt xsaveopt xsavec xgetbv1 xsaves dtherm arat pln pts hwp hwp\_notify hwp\_act\_window hwp\_epp  
> bugs : cpu\_meltdown spectre\_v1 spectre\_v2 spec\_store\_bypass l1tf mds swapgs  
> bogomips : 4992.00  
> clflush size : 64  
> cache\_alignment : 64  
> address sizes : 39 bits physical, 48 bits virtual  
> power management:

Thanks!