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Full Discussion: Pin Memory Statistics
Operating Systems AIX Pin Memory Statistics Post 302352385 by bakunin on Friday 11th of September 2009 07:08:03 AM
Old 09-11-2009
Quote:
Originally Posted by GarciasMuffin
We have an issue on our lpar where the pin memory usage slowly and regularly increases approx 1.5% a day until it reaches its 80% threshold
It is obvious you have an application with a memory leak. Complain with the softwares makers, whoever it may be. This is not acceptable.

Quote:
Originally Posted by GarciasMuffin
We have to regularly reboot the lpars to release the pin memory as we have found that killing all processes does not release it.
Have a look at "ipcrm" and "ipcs" ("man ipcrm", "man ipcs"), it is probably not necessary to reboot the system.

Quote:
Originally Posted by GarciasMuffin
I have monitored any constantly running processes that increase in memory usage with time by monitoring the output of ps vg.
Good try. Maybe "ps -Alo pid,comm,vsz" will serve you better in this case. Sort the output for column 3 to get the top memory users.

Quote:
Originally Posted by GarciasMuffin
Is monitoring svmon -P going to help me find the cause of this issue and if so, monitoring which figure in following example of a process when running svmon -P, will show me the process is increasing in pinned memory usage to cause the increase we are seeing. I know the obvious answer would be 'the one that says pin above it' but there are three of them in the example.
The 3 distinct statistics shown by "svmon -P" are just different views of the matter. Use the number in the first part, it is for your purposes as good as the others. The first part is the overview, the second part shows the utilization of the different memory page sizes and the last part is a detailed list of memory statistics for the process' inner workings. You won't need that just to identify a memory hog.

I hope this helps.

bakunin
 

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LEARN ABOUT CENTOS

pin

PIN(1)							      General Commands Manual							    PIN(1)

NAME

       pin - Package InformatioN

SYNOPSIS

       pin [OPTION] [PACKAGENAME/FILE]

DESCRIPTION

       Pin  searches  the  installed  packages	(rpm  -qi,  -ql)  and/or  the ARCHIVES.gz file for the desired information.  It shows also README,
       README.SuSE, FAQ, when available.

       It is also possible to search through different version with the -v option, if you have the ARCHIVES.gz from it.   You  have  to  copy  AR-
       CHIVES.gz to /var/lib/pin/ for this option, don`t forget to name it, e.g. 7.1-ppc, 7.2-i386.

       pin    open a dialog box and wait for searchstring

       pin <name>
	      searches for a package <name>

       pin -f <name>
	      greping also if package was found

       pin -v <version> <name>
	      searches through another version, not the default

AUTHOR

       Written by Martin Lasarsch

REPORTING BUGS

       Report bugs to <mlasars@suse.de>

CREDITS

       thanks to henne <scripts@hennevogel.de> for hosting & advertising and Stefan Schmidt for better sorting. Christian Boltz for testing, fixes
       and recommendations.

COPYRIGHT

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as  published	by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       This  program  is  distributed  in  the	hope  that  it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free  Software  Foundation,
       Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

pin								  September 2001							    PIN(1)
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