AIX memory usage by processes

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10-23-2018

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AIX memory usage by processes

Hi, i have 2 identical web servers using AIX. I use nmon analyser to check their performance.
The server A exceeds 20% memory usage for system, 5% for cache and the rest 75% for processes. While, it uses 4% of Paging Space.
The server B exceeds 20% for system, 45% for cache and 35% for processes.

I tried using svmon, ps and topas to investigate the memory usage and finally i found at server A the processes which run at Paging Space and how much (MB) they use.

Although i cannot find which processes need that much memory 40% in server A (comparing A-75% and B-35%) and cause this issue.

Could you please help me?

If you need any output etc, just text me or pm... thank you in advance.

dim

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LEARN ABOUT PHP

wincache_ucache_meminfo

WINCACHE_UCACHE_MEMINFO(3)						 1						WINCACHE_UCACHE_MEMINFO(3)

wincache_ucache_meminfo - Retrieves information about user cache memory usage

SYNOPSIS

       array wincache_ucache_meminfo (void  )

DESCRIPTION

	Retrieves information about memory usage by user cache.

RETURN VALUES

	Array of meta data about user 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 user cache

	      o memory_free - amount of free memory in bytes available for the user cache

	      o num_used_blks - number of memory blocks used by the user cache

	      o num_free_blks - number of free memory blocks available for the user cache

	      o memory_overhead - amount of memory in bytes used for the user cache internal structures

EXAMPLES

       Example #1

	      A wincache_ucache_meminfo(3) example

	      <pre>
	      <?php
	      print_r(wincache_ucache_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), wincache_scache_meminfo(3).

PHP Documentation Group 												WINCACHE_UCACHE_MEMINFO(3)

AIX