From cfd3b3afbc73d0600f702be7adb8834341fdbbad Mon Sep 17 00:00:00 2001
From: David Marec <DavidMarec@users.noreply.github.com>
Date: Sun, 7 May 2023 10:18:50 +0200
Subject: [PATCH] Add Perl script to check vmstat diff

---
 vmstat.pl | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100755 vmstat.pl

diff --git a/vmstat.pl b/vmstat.pl
new file mode 100755
index 0000000..6b92c25
--- /dev/null
+++ b/vmstat.pl
@@ -0,0 +1,42 @@
+#!/usr/local/bin/perl
+#
+# requires textproc/p5-XML-LibXML
+#
+use warnings;
+
+use XML::LibXML;
+
+my $filename = 'vmstat.xml';
+
+
+my %dict;
+my $offset = 10;
+
+while (1) {
+	print scalar localtime() . "\n";
+	system("/usr/bin/vmstat -z --libxo xml >$filename"); 
+	$doc = XML::LibXML->load_xml(location => $filename); 
+	foreach my $id ( $doc->findnodes('//zone')) {
+		my $name=$id->findvalue('name');
+		my $used=$id->findvalue('used');
+
+		if ($name eq "vm pgcache") {
+			next;
+		}
+		
+		if (exists $dict{$name}) {
+			my $v0=$dict{$name} + $offset;
+
+			if ($v0 < int($used)) {
+				print "$name: $v0 => $used \n";
+				$dict{$name}=int(${used});
+			}
+		} else {
+			$dict{$name}=int(${used});
+		}
+	}
+	print "------------------------\n" ;
+
+	sleep(5);
+}
+
-- 
2.47.0