diff --git a/ykval-munin-ksmlatency.php b/ykval-munin-ksmlatency.php
new file mode 100644
index 0000000..3da67af
--- /dev/null
+++ b/ykval-munin-ksmlatency.php
@@ -0,0 +1,48 @@
+#!/usr/bin/php
+<?php
+
+set_include_path(get_include_path() . PATH_SEPARATOR .
+		 "/etc/ykval:/usr/share/ykval");
+
+require_once 'ykval-synclib.php';
+require_once 'ykval-config.php';
+require_once 'ykval-log.php';
+
+function ksmurl2shortname ($ksmurl) {
+  if (preg_match("/^[^\/]+\/\/([a-z0-9-]+)/", $ksmurl, $ksmname)==0){
+    echo "Cannot match ksm name: " . $ksmurl . "\n";
+    exit (1);
+  }
+
+  return $ksmname[1];
+}
+$ksms = otp2ksmurls ("ccccccccfnkjtvvijktfrvvginedlbvudjhjnggndtck", 16);
+$shortksms = array_map("ksmurl2shortname", $ksms);
+
+if ($argc==2 && strcmp($argv[1], "config")==0) {
+
+  echo "multigraph yk_latency\n";
+  echo "graph_title KSM latency\n";
+  echo "graph_vlabel Average KSM Decrypt Latency (seconds)\n";
+  echo "graph_category ykval\n";
+  echo "graph_width 400\n";
+
+  foreach ($shortksms as $shortksm) {
+    echo "${shortksm}_avgwait.label ${shortksm}\n";
+    echo "${shortksm}_avgwait.type GAUGE\n";
+    echo "${shortksm}_avgwait.info Average wait time for KSM decrypt\n";
+    echo "${shortksm}_avgwait.min 0\n";
+    echo "${shortksm}_avgwait.draw LINE1\n";
+  }
+
+  exit(0);
+}
+
+echo "multigraph diskstats_latency\n";
+foreach ($ksms as $ksm) {
+  $shortksm = ksmurl2shortname ($ksm);
+  $time = `curl --silent --write-out '%{time_total}' --max-time 42 '$ksm' -o /dev/null`;
+  echo "${shortksm}_avgwait.value $time\n";
+}
+
+?>