26 - CPU Load

student@localhost:~$ lscpu

Architecture:                x86_64

  CPU op-mode(s):            32-bit, 64-bit

  Address sizes:             39 bits physical, 48 bits virtual

  Byte Order:                Little Endian

CPU(s):                      2

  On-line CPU(s) list:       0,1

Vendor ID:                   GenuineIntel

  Model name:                Intel(R) Core(TM) i5-7300U CPU @ 2.60GHz

    CPU family:              6

    Model:                   142

    Thread(s) per core:      1

    Core(s) per socket:      2

    Socket(s):               1

    Stepping:                9

    BogoMIPS:                5423.99

    Flags:                   fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm consta

                             nt_tsc rep_good nopl xtopology nonstop_tsc cpuid tsc_known_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes

                              xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch pti fsgsbase bmi1 avx2 bmi2 invpcid rdseed adx clflushopt arat md_cl

                             ear flush_l1d arch_capabilities

Virtualization features:     

  Hypervisor vendor:         KVM

  Virtualization type:       full

Caches (sum of all):         

  L1d:                       64 KiB (2 instances)

  L1i:                       64 KiB (2 instances)

  L2:                        512 KiB (2 instances)

  L3:                        6 MiB (2 instances)

NUMA:                        

  NUMA node(s):              1

  NUMA node0 CPU(s):         0,1

Vulnerabilities:             

  Gather data sampling:      Unknown: Dependent on hypervisor status

  Indirect target selection: Mitigation; Aligned branch/return thunks

  Itlb multihit:             KVM: Mitigation: VMX unsupported

  L1tf:                      Mitigation; PTE Inversion

  Mds:                       Mitigation; Clear CPU buffers; SMT Host state unknown

  Meltdown:                  Mitigation; PTI

  Mmio stale data:           Mitigation; Clear CPU buffers; SMT Host state unknown

  Old microcode:             Not affected

  Reg file data sampling:    Not affected

  Retbleed:                  Vulnerable

  Spec rstack overflow:      Not affected

  Spec store bypass:         Vulnerable

  Spectre v1:                Mitigation; usercopy/swapgs barriers and __user pointer sanitization

  Spectre v2:                Mitigation; Retpolines; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI Retpoline

  Srbds:                     Unknown: Dependent on hypervisor status

  Tsa:                       Not affected

  Tsx async abort:           Not affected

  Vmscape:                   Not affected

student@localhost:~$ uptime

 11:40:59 up  1:39,  1 user,  load average: 0.23, 0.60, 0.30

student@localhost:~$ dd if=/dev/zero of=/dev/null &

[1] 4706

student@localhost:~$ uptime

 11:41:17 up  1:39,  1 user,  load average: 0.18, 0.57, 0.29

student@localhost:~$ uptime

 11:41:27 up  1:39,  1 user,  load average: 0.87, 0.70, 0.34

student@localhost:~$ killall dd

[1]+  Terminated              dd if=/dev/zero of=/dev/null