From 2a0b82b167d1fdd5943072f6372e18c0f7b4a940 Mon Sep 17 00:00:00 2001
From: Mathieu Arnold <mat@FreeBSD.org>
Date: Mon, 6 Nov 2017 14:39:47 +0000
Subject: Add a plugin to graph zfs arc compression.

PR:		223423
Submitted by:	bcr
Sponsored by:	Absolight
---
 sysutils/munin-node/plugins/zfs_arc_compression | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 sysutils/munin-node/plugins/zfs_arc_compression

(limited to 'sysutils/munin-node/plugins/zfs_arc_compression')

diff --git a/sysutils/munin-node/plugins/zfs_arc_compression b/sysutils/munin-node/plugins/zfs_arc_compression
new file mode 100644
index 000000000000..79d5ef2f2197
--- /dev/null
+++ b/sysutils/munin-node/plugins/zfs_arc_compression
@@ -0,0 +1,22 @@
+#!/bin/sh
+#
+# $FreeBSD$
+
+set -e
+set -u
+
+UNCOMP_ARC=$(sysctl -n kstat.zfs.misc.arcstats.uncompressed_size)
+COMP_ARC=$(sysctl -n kstat.zfs.misc.arcstats.compressed_size)
+
+value=$(bc -e scale=2 -e "$UNCOMP_ARC/$COMP_ARC" -e quit)
+
+cat <<EOM
+graph_title ZFS ARC compression ratio
+graph_vlabel ratio
+graph_category ZFS
+graph_info This graph shows the ZFS ARC compression (uncompressed vs. compressed) ratio
+ratio.label ratio
+ratio.value $value
+EOM
+
+exit 0
-- 
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