Am working on small program that used to calculate the memory usage of AIX servers. Am using svmon -G command to get the memory usage. For example, consider the following output.
Code:
$ svmon -G
size inuse free pin virtual mmode
memory 1957888 670177 1287711 411476 512709 Ded
pg space 131072 2929
work pers clnt other
pin 350964 0 0 60512
in use 512709 0 157468
PageSize PoolSize inuse pgsp pin virtual
s 4 KB - 269713 2929 85684 112245
m 64 KB - 25029 0 20362 25029
$
Am using "in use" value at the 6-th line number as memory usage. It gives 26 % as a memory usage. Also am using /bin/ps -eo comm,pmem,args to get the all the process memory usage to confirm with previous calculation.But value calculated by both methods does not match.
Please advise.
Moderator's Comments:
edit by bakunin: my first advice is to use CODE-tags. Its the button misleadingly labeled "CODE" (in case you can't find it).
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How to find the memory utilization of AIX server using svmon -G output.
Sample output for svmon -G command from my AIX test server,
size inuse free pin virtual
memory 4014080 3995443 18637 575916 1876393
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Discussion started by: dim
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LEARN ABOUT DEBIAN
passenger-memory-stats
passenger-memory-stats(8) Administration Commands passenger-memory-stats(8)NAME
passenger-memory-stats - reports a snapshot of the Apache and Phusion Passenger memory statistcs
SYNOPSIS
passenger-memory-stats
DESCRIPTION
passenger-memory-stats allows you to easily analyze the real memory usage of Phusion Passenger and Apache.
Process inspection tools such as ps and top are useful, but they rarely show the correct memory usage. The real memory usage is usually
lower than what ps and top report.
There are many technical reasons why this is so, but an explanation is beyond the scope of this page. We refer the interested reader to
operating systems literature about virtual memory and copy-on-write.
When you run this tool the Private or private dirty RSS field shows the real memory usage of processes.
ENVIRONMENT VARIABLES
HTTPD The full filename to the Apache executable. By default, Passenger will attempt to autodetect the Apache executable. If autodetection
fails for whatever reason, then Apache processes will not be shown in the memory statistics. In that case, you may manually specify
the location to the Apache executable using this environment variable.
SEE ALSO passenger-status(8), ps(1), top(1),
User guide at http://www.modrails.com/documentation.html
AUTHOR
Phusion Passenger is written by Phusion (http://www.phusion.nl)
"Phusion" and "Phusion Passenger" are trademarks of Hongli Lai & Ninh Bui.
This manual page was written by Neil Wilson <neil@brightbox.co.uk> for the Ubuntu project (but may be used by others).
Phusion Passenger 2.0 passenger-memory-stats(8)
03-11-2013
