1Sys::Statistics::Linux:U:sMeermSCtoanttsr(i3b)uted PerlSDyosc:u:mSetnattaitsitoincs::Linux::MemStats(3)
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NAME

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

9           use Sys::Statistics::Linux::MemStats;
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11           my $lxs  = Sys::Statistics::Linux::MemStats->new;
12           my $stat = $lxs->get;
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DESCRIPTION

15       Sys::Statistics::Linux::MemStats gathers memory statistics from the
16       virtual /proc filesystem (procfs).
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18       For more information read the documentation of the front-end module
19       Sys::Statistics::Linux.
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MEMORY INFORMATIONS

22       Generated by /proc/meminfo.
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24           memused         -  Total size of used memory in kilobytes.
25           memfree         -  Total size of free memory in kilobytes.
26           memusedper      -  Total size of used memory in percent.
27           memtotal        -  Total size of memory in kilobytes.
28           buffers         -  Total size of buffers used from memory in kilobytes.
29           cached          -  Total size of cached memory in kilobytes.
30           realfree        -  Total size of memory is real free (memfree + buffers + cached).
31           realfreeper     -  Total size of memory is real free in percent of total memory.
32           swapused        -  Total size of swap space is used is kilobytes.
33           swapfree        -  Total size of swap space is free in kilobytes.
34           swapusedper     -  Total size of swap space is used in percent.
35           swaptotal       -  Total size of swap space in kilobytes.
36           swapcached      -  Memory that once was swapped out, is swapped back in but still also is in the swapfile.
37           active          -  Memory that has been used more recently and usually not reclaimed unless absolutely necessary.
38           inactive        -  Memory which has been less recently used and is more eligible to be reclaimed for other purposes.
39                              On earlier kernels (2.4) Inact_dirty + Inact_laundry + Inact_clean.
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41           The following statistics are only available by kernels from 2.6.
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43           slab            -  Total size of memory in kilobytes that used by kernel for data structure allocations.
44           dirty           -  Total size of memory pages in kilobytes that waits to be written back to disk.
45           mapped          -  Total size of memory in kilbytes that is mapped by devices or libraries with mmap.
46           writeback       -  Total size of memory that was written back to disk.
47           committed_as    -  The amount of memory presently allocated on the system.
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49           The following statistic is only available by kernels from 2.6.9.
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51           commitlimit     -  Total amount of memory currently available to be allocated on the system.
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METHODS

54   new()
55       Call "new()" to create a new object.
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57           my $lxs = Sys::Statistics::Linux::MemStats->new;
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59       It's possible to set the path to the proc filesystem.
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61            Sys::Statistics::Linux::MemStats->new(
62               files => {
63                   # This is the default
64                   path    => '/proc',
65                   meminfo => 'meminfo',
66               }
67           );
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69   get()
70       Call "get()" to get the statistics. "get()" returns the statistics as a
71       hash reference.
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73           my $stat = $lxs->get;
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EXPORTS

76       No exports.
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SEE ALSO

79       proc(5)
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REPORTING BUGS

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

85       Jonny Schulz <jschulz.cpan(at)bloonix.de>.
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88       Copyright (c) 2006, 2007 by Jonny Schulz. All rights reserved.
89
90       This program is free software; you can redistribute it and/or modify it
91       under the same terms as Perl itself.
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95perl v5.34.0                      2022-01-21Sys::Statistics::Linux::MemStats(3)
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