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Hey! I just coded a 3 bash scripts ignoring this great great plugin!

I got some comments that may interest you or the community:

RedHat installation without a direct CPAN access:
##################################################
#Get and scp the files:
wget http://search.cpan.org/CPAN/authors/id/M/MS/MSCHWERN/Test-Simple-0.98.tar.gz
wget http://search.cpan.org/CPAN/authors/id/B/BL/BLOONIX/Sys-Statistics-Linux-0.66.tar.gz


# On the host get makemaker:
yum install perl-ExtUtils-MakeMaker.ppc64 -y
# Install the required modules:
tar xzf Test-Simple-0.98.tar.gz
cd Test-Simple-0.98
perl Makefile.PL
make
make test
make install
cd ..
tar xzf Sys-Statistics-Linux-0.66.tar.gz
cd Sys-Statistics-Linux-0.66
perl Makefile.PL
make
make test
make install
# You got it!
##################################################

Second, memory usage is reporting used as used+cached, so it could be misleading, I'll modify for my environment IDK if you would like to patch your code.

THANK YOU for sharing your amazing piece of work!