BSD::getloadavg - Perl Interface to getloadavg (3)
use BSD::getloadavg; my @loadavg = getloadavg();
This module allows you to access load average without invoking uptime(1). Instead of
my @loadavg = (qx(uptime) =~ /([\.\d]+)\s+([\.\d]+)\s+([\.\d]+)/);
You can simply
Though named BSD::getloadavg, this module also works on Linux and other platforms that support getloadavg. To find if your platform supports this module, Just
nm /usr/lib/libc.* | grep getloadavg
You can run benchmark with t/benchmark.pl. Here is the result in my platforms.
Benchmark: running XS, command for at least 3 CPU seconds... Rate command XS command 1061/s -- -98% XS 69808/s 6482% --
Benchmark: running XS, command for at least 3 CPU seconds... Rate command XS command 919/s -- -99% XS 139023/s 15026% --
getloadavg()
Also available as http://www.freebsd.org/cgi/man.cgi?query=getloadavg&sektion=3. Since getloadavg is in libc in most platform, Makefile.PL needed no tweaking. If you find a platform that does not have getloadavg in libc, please report.
This module accesses load average via /proc or uptime command. Therefore the performance is analogous to the benchmark above.
Seems like the most versatile module in this arena. Unfortunately most platform-dependent also. Works only on FreeBSD as of Version 0.06.
Dan Kogai, <dankogai@dan.co.jp>
Copyright (C) 2006-2007 by Dan Kogai
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or, at your option, any later version of Perl 5 you may have available.
To install BSD::getloadavg, copy and paste the appropriate command in to your terminal.
cpanm
cpanm BSD::getloadavg
CPAN shell
perl -MCPAN -e shell install BSD::getloadavg
For more information on module installation, please visit the detailed CPAN module installation guide.