You can find out how much memory the kernel is using by taking the total amount of memory in your machine and subtracting from it the amount of:
A.
“total mem” in /proc/meminfo
B.
“total mem” in /proc/memused
C.
“total mem” in /proc/memcurrent
D.
None of the choices
Explanation:
You can find out how much memory the kernel is using by taking the total amount of memory in your machine and subtracting from it the amount of “total mem”in /proc/meminfo or the output of the command `free’.
output of the command `free’.
See the sample output of /proc/meminfo
MemTotal: 118180 kB
MemFree: 19108 kB
Buffers: 4800 kB
Cached: 37860 kB
SwapCached: 8 kB
Active: 38564 kB
Inactive: 24820 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 118180 kB
LowFree: 19108 kB
SwapTotal: 522072 kB
SwapFree: 522056 kB
Dirty: 100 kB
Writeback: 0 kB
Mapped: 32936 kB
Slab: 7084 kB
Committed_AS: 64768 kB
PageTables: 1036 kB
VmallocTotal: 901112 kB
VmallocUsed: 3252 kB
VmallocChunk: 897140 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 4096 kB
See the sample output of fee -m command
total used free shared buffers cached
Mem: 115 96 18 0 4 37
-/+ buffers/cache: 55 60
Swap: 509 0 509