NAME
Linux::Info::MemStats - Collect linux memory information.
SYNOPSIS
use Linux::Info::MemStats;
my $lxs = Linux::Info::MemStats->new;
my $stat = $lxs->get;
DESCRIPTION
Linux::Info::MemStats gathers memory statistics from the virtual /proc filesystem (procfs).
For more information read the documentation of the front-end module Linux::Info.
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 = Linux::Info::MemStats->new;
It's possible to set the path to the proc filesystem.
Linux::Info::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
Nothing.
SEE ALSO
proc(5)
AUTHOR
Alceu Rodrigues de Freitas Junior, <arfreitas@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2015 of Alceu Rodrigues de Freitas Junior, <arfreitas@cpan.org>
This file is part of Linux Info project.
Linux Info is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Linux Info is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Linux Info. If not, see <http://www.gnu.org/licenses/>.