/proc/cpuifo and /proc/meminfo

physical id     : 1 --> i.e. physical cpu number
siblings        : 8 --> total cores near
core id         : 7 --> my core id
cpu cores       : 8 --> total cores in this CPU



 cat /proc/meminfo
MemTotal:       16264672 kB
MemFree:        15244520 kB
MemAvailable:   15423132 kB

16 GB

free -g
[test@sandeep-20ne ~]$ free -g
              total        used        free      shared  buff/cache   available
Mem:             15           0          14           0           0          14
15 GB