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Full Discussion: Memory Missing ?
Operating Systems Solaris Memory Missing ? Post 302343853 by JohnJacobChacko on Thursday 13th of August 2009 10:59:29 PM
Old 08-13-2009
Memory Missing ?

Hello All,

I have oracle running on Solaris 5.10 SPARC 64bit.
Physical memory is 16Gb.

Code:
 NPROC USERNAME  SWAP   RSS MEMORY      TIME  CPU
   114 oraprd     13G   13G    82% 513:25:53 0.4%
    46 root      180M  225M   1.4% 149:13:33 0.1%
     6 daemon     42M   45M   0.3%  14:01:59 0.0%

the above prstat -t shows the usage is 13g+225m+45m ~= 14g
So, there should be 2Gb left free isn't it ?

But top command says only 888m is free.

top
Code:
CPU states: 97.3% idle,  1.3% user,  1.4% kernel,  0.0% iowait,  0.0% swap
Memory: 16G phys mem, 888M free mem, 16G swap, 16G free swap

vmstat
Code:
 0 0 0 15267768 907448 389 1304 0 4 4 0  0  0  0  0  0 1791 6466 2342  1  1 98

Could someone help me figure out where the memory has gone ?
Are there some memory consuming processes which are not shown in prstat ?

TIA,
John
 

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FREE(1) 							Linux User's Manual							   FREE(1)

NAME
free - Display amount of free and used memory in the system SYNOPSIS
free [-b | -k | -m] [-o] [-s delay ] [-t] [-V] DESCRIPTION
free displays the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel. The shared memory column should be ignored; it is obsolete. Options The -b switch displays the amount of memory in bytes; the -k switch (set by default) displays it in kilobytes; the -m switch displays it in megabytes. The -t switch displays a line containing the totals. The -o switch disables the display of a "buffer adjusted" line. If the -o option is not specified, free subtracts buffer memory from the used memory and adds it to the free memory reported. The -s switch activates continuous polling delay seconds apart. You may actually specify any floating point number for delay, usleep(3) is used for microsecond resolution delay times. The -V displays version information. FILES
/proc/meminfo-- memory information SEE ALSO
ps(1), slabtop(1), vmstat(8), top(1) AUTHORS
Written by Brian Edmonds. Send bug reports to <albert@users.sf.net> Cohesive Systems 20 Mar 1993 FREE(1)
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