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Operating Systems AIX Regarding AIX Memory Utilization usage calculation Post 302779933 by DGPickett on Wednesday 13th of March 2013 02:06:32 PM
Old 03-13-2013
Yes, good old shared memory is used by the traditional UNIX IPCs, including semaphores and queues. I am not sure why these have to be pinned. Pinning is usually for peripheral/I/O support or the paranoid.

You can do similar things without shared memory or pinning using mmap() and files. An area of a file can be mmap()'d by all related processes, no root required. The content is durable through boots, too!
 

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WINCACHE_OCACHE_MEMINFO(3)						 1						WINCACHE_OCACHE_MEMINFO(3)

wincache_ocache_meminfo - Retrieves information about opcode cache memory usage

SYNOPSIS
array wincache_ocache_meminfo (void ) DESCRIPTION
Retrieves information about memory usage by opcode cache. RETURN VALUES
Array of meta data about opcode 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 opcode cache o memory_free - amount of free memory in bytes available for the opcode cache o num_used_blks - number of memory blocks used by the opcode cache o num_free_blks - number of free memory blocks available for the opcode cache o memory_overhead - amount of memory in bytes used for the opcode cache internal structures EXAMPLES
Example #1 A wincache_ocache_meminfo(3) example <pre> <?php print_r(wincache_ocache_meminfo()); ?> </pre> The above example will output: Array ( [memory_total] => 134217728 [memory_free] => 112106972 [num_used_blks] => 15469 [num_free_blks] => 4 [memory_overhead] => 247600 ) 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_meminfo(3), wincache_ucache_info(3), wincache_scache_info(3), wincache_scache_mem- info(3). PHP Documentation Group WINCACHE_OCACHE_MEMINFO(3)
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