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Full Discussion: High memory usage in AIX 5.1
Operating Systems AIX High memory usage in AIX 5.1 Post 302166203 by rvegmond on Monday 11th of February 2008 09:24:22 AM
Old 02-11-2008
Jayakumar,

AIX is trying to get the most out of your memory, it is using the available memory as file cache. This to prevent reading from the 'slow' disks and thereby speeding up the system. When there is no paging then there is no reason to worry. If you want (and really, really want) to influence this behavior you can fiddle with the famous minperm/maxperm parameters..

If you look in this forum for the string "aix memory breakdown" you might find more info about this subject, "pagink" included a link that might give you a more in depth answer.
 

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WINCACHE_SCACHE_MEMINFO(3)						 1						WINCACHE_SCACHE_MEMINFO(3)

wincache_scache_meminfo - Retrieves information about session cache memory usage

SYNOPSIS
array wincache_scache_meminfo (void ) DESCRIPTION
Retrieves information about memory usage by session cache. RETURN VALUES
Array of meta data about session cache memory usage or FALSE on failure The array returned by this function contains the following elements: o memory_total - amount of memory in bytes allocated for the session cache o memory_free - amount of free memory in bytes available for the session cache o num_used_blks - number of memory blocks used by the session cache o num_free_blks - number of free memory blocks available for the session cache o memory_overhead - amount of memory in bytes used for the session cache internal structures EXAMPLES
Example #1 A wincache_scache_meminfo(3) example <pre> <?php print_r(wincache_scache_meminfo()); ?> </pre> The above example will output: Array ( [memory_total] => 5242880 [memory_free] => 5215056 [num_used_blks] => 6 [num_free_blks] => 3 [memory_overhead] => 176 ) SEE ALSO
wincache_fcache_fileinfo(3), wincache_fcache_meminfo(3), wincache_ocache_fileinfo(3), wincache_rplist_fileinfo(3), wincache_rplist_mem- info(3), wincache_refresh_if_changed(3), wincache_ucache_info(3), wincache_scache_info(3). PHP Documentation Group WINCACHE_SCACHE_MEMINFO(3)
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