system("/usr/bin/vmstat -z --libxo xml >$filename");
my $doc = XML::LibXML->load_xml(location => $filename);
system("/usr/bin/vmstat -z --libxo xml >$filename");
my $doc = XML::LibXML->load_xml(location => $filename);
foreach my $id ($doc->findnodes('//zone')) {
my $name=$id->findvalue('name');
my $used=$id->findvalue('used');
my $val = int($used);
if ($name eq "vm pgcache") {
foreach my $id ($doc->findnodes('//zone')) {
my $name=$id->findvalue('name');
my $used=$id->findvalue('used');
my $val = int($used);
if ($name eq "vm pgcache") {