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Memory utilization issue

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Operating Systems Linux SuSE Memory utilization issue
# 1  
Old 02-11-2013
You can use 'ps -le' and sort on the SZ column to see big VM procs. Sort is now built in. You may have to specify the columns (-o) to see rss which is ram used, and sort on that. Sorts are now built into newer ps versions.
Code:
$ ps -le|(line;sort -nr +9 -10)|head
  F S        UID   PID  PPID  C PRI NI             ADDR   SZ            WCHAN TTY       TIME COMD
  1 S      50453  6739     1  0 155 20         e7201400 241737           e843b4 ?        1336:16 TMUSREVT
  1 R          0  2940  2757  0 152 20         a4d0c800 144262                - ?        250150:38 mhragent
  1 S      22049  6852     1  0 168 20        160d80b00 43720        138032980 ?        259:21 dequeueClientX
  1 S      22049  6851     1  0 168 20        1558c1700 43720         e54ec200 ?        258:38 dequeueClientX
  1 S      22049  6860     1  1 168 20        14b001a00 43716        172cc3a80 ?        261:35 dequeueClientX
  1 S      22049  6859     1  0 168 20         dab08d00 43716        11b204a40 ?        259:56 dequeueClientX
  1 S      22049  6858     1  0 168 20         b5b47500 43716        14ba4f780 ?        262:21 dequeueClientX
  1 S      22049  6857     1  1 168 20         d9049c00 43716         ab7fd380 ?        261:19 dequeueClientX
  1 S      22049  6856     1  0 168 20         a46e6900 43716        12bbc3180 ?        259:59 dequeueClientX
$

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LEARN ABOUT CENTOS

malloc_trim

MALLOC_TRIM(3)						     Linux Programmer's Manual						    MALLOC_TRIM(3)

NAME

       malloc_trim - release free memory from the top of the heap

SYNOPSIS

       #include <malloc.h>

       void malloc_trim(size_t pad);

DESCRIPTION

       The malloc_trim() function attempts to release free memory at the top of the heap (by calling sbrk(2) with a suitable argument).

       The  pad  argument  specifies  the amount of free space to leave untrimmed at the top of the heap.  If this argument is 0, only the minimum
       amount of memory is maintained at the top of the heap (i.e., one page or less).	A nonzero argument can be used to maintain  some  trailing
       space at the top of the heap in order to allow future allocations to be made without having to extend the heap with sbrk(2).

RETURN VALUE

       The malloc_trim() function returns 1 if memory was actually released back to the system, or 0 if it was not possible to release any memory.

ERRORS

       No errors are defined.

CONFORMING TO

       This function is a GNU extension.

NOTES

       This  function  is  automatically  called by free(3) in certain circumstances; see the discussion of M_TOP_PAD and M_TRIM_THRESHOLD in mal-
       lopt(3).

       This function cannot release free memory located at places other than the top of the heap.

       This function releases only memory in the main arena.

SEE ALSO

       sbrk(2), malloc(3), mallopt(3)

COLOPHON

       This page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2012-03-29							    MALLOC_TRIM(3)