Memory Usage of Solaris Operating System

Kernel Memory Usage:

In order to know kernel memory usage issue kstat | grep pp_kernel which will return output as 8k pages.

Example:

$kstat | grep pp_kernel
       pp_kernel                       83613

Note that the size displayed here in bytes.
On sql*plus you can convert this size into megabytes.

SQL> SELECT 83613*8/1024 "MEMORY IN MB" FROM DUAL;

MEMORY IN MB
------------
 653.226563

Current Statistics:

To know about active process statistics along with memory usage use,
# prstat -a -v

Virtual Memory Statistics

In order to get an idea about virtual memory statistics use

# vmstat 5
kthr      memory            page            disk          faults      cpu
r b w   swap  free  re  mf pi po fr de sr cd s0 -- --   in   sy   cs us sy id
0 0 0 4113216 483876 38 273 6  0  0  0  1  7 -0  0  0  569  986  384  1  1 99

Here 5 indicate after 5 seconds statistics will be shown.

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