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RSS of prstat vs RSS of PS

 
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Operating Systems Solaris RSS of prstat vs RSS of PS
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Old 09-03-2014
Things are changing all the time. If you run prstat then you run ps you get two differtent snapshots of memory. Even if you run them more or less simultaneously they will not examine the processes in perfect lockstep.

Now consider that a user is running 10 different processes which are 10 different programs. However all 10 were written in C and all 10 use the standard C library and the C I/O library. These libraries are mapped into all 10 ten processes. But they are shared libraries. Only one copy actually resides in core. That single copy is counted in the RSS of all 10 processes. Now one of the 10 suddenly wants to call, let's say, strncpy() but the code for that is not currently in core. So it page faults its way in. That increases the RSS of all 10 processes even though 9 of the 10 may currently be asleep.
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LEARN ABOUT DEBIAN

chronicle-rss-importer

CHRONICLE-RSS-IMPORTER(1)				User Contributed Perl Documentation				 CHRONICLE-RSS-IMPORTER(1)

NAME

       chronicle-rss-importer - Import entries from an RSS feed to chronicle

SYNOPSIS

	 General Options:

	  --output	  Specify the directory to write entries to.
	  --feed	  Specify the URL of the feed.
	  --sequential	  Specify that entries should be numbered rather than named.

	 Help Options:

	  --help	Show the help information for this script.
	  --manual	Read the manual for this script.
	  --verbose	Show useful debugging information.

ABOUT

	 Chronicle is a simple tool to convert a collection of text files,
	located within a single directory, into a blog consisting of static
	HTML files.

	 This importer script will create a directory of input files from a
	given RSS feed, by downloading it and writing out each entry to a single
	text file.

	 The output files will be named after the entries titles, or if
	B<--sequential> was used each entry will be numbered numerically.

AUTHOR

	Steve
	--
	http://www.steve.org.uk/

LICENSE

       Copyright (c) 2007-2010 by Steve Kemp.  All rights reserved.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  The LICENSE file contains the
       full text of the license.

perl v5.12.3							    2011-05-03						 CHRONICLE-RSS-IMPORTER(1)