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sys::statistics::linux::memstats

Sys::Statistics::Linux::MemStats(3pm)			User Contributed Perl Documentation		     Sys::Statistics::Linux::MemStats(3pm)

NAME

       Sys::Statistics::Linux::MemStats - Collect linux memory information.

SYNOPSIS

	   use Sys::Statistics::Linux::MemStats;

	   my $lxs  = Sys::Statistics::Linux::MemStats->new;
	   my $stat = $lxs->get;

DESCRIPTION

       Sys::Statistics::Linux::MemStats gathers memory statistics from the virtual /proc filesystem (procfs).

       For more information read the documentation of the front-end module Sys::Statistics::Linux.

MEMORY INFORMATIONS

       Generated by /proc/meminfo.

	   memused	   -  Total size of used memory in kilobytes.
	   memfree	   -  Total size of free memory in kilobytes.
	   memusedper	   -  Total size of used memory in percent.
	   memtotal	   -  Total size of memory in kilobytes.
	   buffers	   -  Total size of buffers used from memory in kilobytes.
	   cached	   -  Total size of cached memory in kilobytes.
	   realfree	   -  Total size of memory is real free (memfree + buffers + cached).
	   realfreeper	   -  Total size of memory is real free in percent of total memory.
	   swapused	   -  Total size of swap space is used is kilobytes.
	   swapfree	   -  Total size of swap space is free in kilobytes.
	   swapusedper	   -  Total size of swap space is used in percent.
	   swaptotal	   -  Total size of swap space in kilobytes.
	   swapcached	   -  Memory that once was swapped out, is swapped back in but still also is in the swapfile.
	   active	   -  Memory that has been used more recently and usually not reclaimed unless absolutely necessary.
	   inactive	   -  Memory which has been less recently used and is more eligible to be reclaimed for other purposes.
			      On earlier kernels (2.4) Inact_dirty + Inact_laundry + Inact_clean.

	   The following statistics are only available by kernels from 2.6.

	   slab 	   -  Total size of memory in kilobytes that used by kernel for data structure allocations.
	   dirty	   -  Total size of memory pages in kilobytes that waits to be written back to disk.
	   mapped	   -  Total size of memory in kilbytes that is mapped by devices or libraries with mmap.
	   writeback	   -  Total size of memory that was written back to disk.
	   committed_as    -  The amount of memory presently allocated on the system.

	   The following statistic is only available by kernels from 2.6.9.

	   commitlimit	   -  Total amount of memory currently available to be allocated on the system.

METHODS

   new()
       Call "new()" to create a new object.

	   my $lxs = Sys::Statistics::Linux::MemStats->new;

       It's possible to set the path to the proc filesystem.

	    Sys::Statistics::Linux::MemStats->new(
	       files => {
		   # This is the default
		   path    => '/proc',
		   meminfo => 'meminfo',
	       }
	   );

   get()
       Call "get()" to get the statistics. "get()" returns the statistics as a hash reference.

	   my $stat = $lxs->get;

EXPORTS

       No exports.

SEE ALSO

       proc(5)

REPORTING BUGS

       Please report all bugs to <jschulz.cpan(at)bloonix.de>.

AUTHOR

       Jonny Schulz <jschulz.cpan(at)bloonix.de>.

COPYRIGHT

       Copyright (c) 2006, 2007 by Jonny Schulz. All rights reserved.

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

perl v5.14.2							    2012-03-09				     Sys::Statistics::Linux::MemStats(3pm)

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