To check free memory in linux: free -m
$ free -m
total used free shared buffers cached
Mem: 3802 3577 225 0 137 2447
-/+ buffers/cache: 993 2809
Swap: 511 0 511
The actual free memory in the RAM is 2809MB in the second line (=free+buffers+cached in the first line)
The used memory is 999MB
To check free memory in Solaris
bash-3.00$ vmstat 1 5
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr m0 m1 m2 m3 in sy cs us sy id
0 0 0 27687376 8977832 13 109 1 2 2 0 0 1 98 2 0 538 1677 1385 4 2 94
0 0 0 38305368 5943936 9 40 0 0 0 0 0 0 0 1 0 771 2102 1848 13 3 84
0 0 0 38307912 5945880 116 141 0 0 0 0 0 0 0 0 0 828 2666 2155 12 6 83
0 0 0 38307912 5945880 0 8 0 0 0 0 0 0 0 0 0 561 1030 1217 4 2 95
0 0 0 38307912 5945880 0 4 0 0 0 0 0 0 0 0 0 561 1186 1369 5 2 93
Ignore the first line, its the value since the last reboot, here 5945880 is the free memory
Total available memory can be seen through top command
To know the CPU count in Linux
cat /proc/cpuinfo | grep processor | wc -l
Solaris:
psrinfo -pv
