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Full Discussion: Script to record max memory usage of program
Top Forums Shell Programming and Scripting Script to record max memory usage of program Post 303021454 by MadeInGermany on Thursday 9th of August 2018 01:34:13 PM
Old 08-09-2018
When a page fault occurs then something is paged in or out, usually from or to the swap space.
If you run
Code:
vmstat 2

you see it listed as si (swap in) or so (swap out).
Here is a suggestion for a bash script that monitors a given PID, and displays the maximum RSS memory (kilobyte of RAM used).
Code:
#!/bin/bash
[[ $1 =~ ^[0-9]+$ ]] || {
  echo "usage:
  ${0}: <pid>"
  exit 1
}
pid=$1
ps -fp $pid
max=0
while :
do
  rss=$(ps -o rss= -p $pid)
  if [[ $rss -gt $max ]]
  then
    max=$rss
    echo "maxRSS (kb): $max"
  fi
  sleep 10
done

This User Gave Thanks to MadeInGermany For This Post:
jim mcnamara
 

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LEARN ABOUT DEBIAN

wiki::toolkit::plugin::rss::reader

Wiki::Toolkit::Plugin::RSS::Reader(3pm) 		User Contributed Perl Documentation		   Wiki::Toolkit::Plugin::RSS::Reader(3pm)

NAME

       Wiki::Toolkit::Plugin::RSS::Reader - retrieve RSS feeds for inclusion in Wiki::Toolkit nodes

DESCRIPTION

       Use this Wiki::Toolkit plugin to retrieve an RSS feed from a given URL so that you can include it in a wiki node.

SYNOPSIS

	   use Wiki::Toolkit::Plugin::RSS::Reader;

	   my $rss = Wiki::Toolkit::Plugin::RSS::Reader->new(
	     url   => 'http://example.com/feed.rss'
	   );

	   my @items = $rss->retrieve;

USAGE

       This is a plugin for Wiki::Toolkit, a toolkit for building wikis; therefore please consult the documentation for Wiki::Toolkit for relevant
       information.  This module can, however, be used standalone if you wish.

METHODS

   "new"
	   my $rss = Wiki::Toolkit::Plugin::RSS::Reader->new([options]);

       Create a new RSS reader. Valid options are "url" or "file" (a path to an RSS file); only one can be specified.

   "retrieve"
	   my @items = $rss->retrieve;

       "retrieve" will return an array of hashes, one for each item in the RSS feed. The hashes contain three items, "title", "link", and
       "description".

       If the URL or file you specified cannot be retrieved/read, "retrieve" will return undef rather than blowing up and surprising the person
       reading your wiki. If you want, you can specify "debug" to be 1 in the options to "new", which will cause the module to croak instead of
       failing silently.

AUTHOR

       Earle Martin (EMARTIN@cpan.org) The Wiki::Toolkit team, (http://www.wiki-toolkit.org/)

LEGAL

       Copyright 2004 Earle Martin.  Copyright 2006 the Wiki::Toolkit team.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.10.1							    2009-10-25				   Wiki::Toolkit::Plugin::RSS::Reader(3pm)
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