2 Linux::SysInfo - Perl interface to the sysinfo(2) Linux system call.
8 use Linux::SysInfo qw/sysinfo/;
11 print "$_: $si->{$_}\n" for keys %$si;
14 This module is a wrapper around the sysinfo(2) Linux system call. It
15 gives information about the current uptime, load average, memory usage
16 and processes running. Other systems have also this system call (e.g.
17 Solaris), but in most cases the returned information is different.
21 This constant is set to 1 if your kernel supports the three extended
22 fields "totalhigh", "freehigh" and "mem_unit" ; and to 0 otherwise.
26 This function takes no argument. It returns undef on failure or a hash
27 reference whose keys are the members name of the struct sysinfo on
31 Seconds elapsed since the system booted.
33 "load1", "load5", "load15"
34 1, 5 and 15 minutes load average.
37 Total usable main memory size.
40 Available memory size.
43 Amount of shared memory.
46 Memory used by buffers.
49 Total swap space size.
52 Swap space still available.
55 Number of current processes.
57 Prior to Linux 2.3.23 on i386 and 2.3.48 on all other architectures, the
58 memory sizes were given in bytes. Since then, the following members are
59 also available and all the memory sizes are given as multiples of
63 Total high memory size.
66 Available high memory size.
69 Memory unit size in bytes.
72 The only function of this module, "sysinfo", and the constant
73 "LS_HAS_EXTENDED" are only exported on request. Functions are also
74 exported by the ":funcs" tag, and constants by ":consts".
77 If you upgrade your kernel to a greater version than 2.3.23 on i386 or
78 2.3.48 on any other platform, you will need to rebuild the module to
79 access the extended fields.
81 Moreover, since the perl hash function has changed after the 5.6
82 version, you will also need to recompile the module if you upgrade your
83 perl from a version earlier than 5.6.
86 The sysinfo(2) man page.
88 Sys::Info : Gather information about your system.
90 Sys::CpuLoad : Try several different methods to retrieve the load
93 BSD::getloadavg : Wrapper to the getloadavg(3) BSD system call.
96 Vincent Pit, "<perl at profvince.com>", <http://www.profvince.com>.
98 You can contact me by mail or on #perl @ FreeNode (vincent or
102 Please report any bugs or feature requests to "bug-linux-sysinfo at
103 rt.cpan.org", or through the web interface at
104 <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Linux-SysInfo>. I will
105 be notified, and then you'll automatically be notified of progress on
106 your bug as I make changes.
109 You can find documentation for this module with the perldoc command.
111 perldoc Linux::SysInfo
114 Copyright 2007-2008 Vincent Pit, all rights reserved.
116 This program is free software; you can redistribute it and/or modify it
117 under the same terms as Perl itself.