From 7dbfc1a80bb786d3cf5b1691135dc7318ceabcd4 Mon Sep 17 00:00:00 2001
From: Johannes Meyer <johannes.meyer@icinga.com>
Date: Fri, 16 Jul 2021 15:18:22 +0200
Subject: [PATCH] PerfDataFormat: Support small and high units at the same time

---
 library/Icingadb/Util/PerfDataFormat.php | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/library/Icingadb/Util/PerfDataFormat.php b/library/Icingadb/Util/PerfDataFormat.php
index 114c0cdd..4789dd53 100644
--- a/library/Icingadb/Util/PerfDataFormat.php
+++ b/library/Icingadb/Util/PerfDataFormat.php
@@ -142,6 +142,16 @@ class PerfDataFormat
             $pow = $result = 0;
         } else {
             $pow = floor(log($value, $base));
+
+            // Identify nearest unit if unknown
+            while (! isset($units[$pow])) {
+                if ($pow < 0) {
+                    $pow++;
+                } else {
+                    $pow--;
+                }
+            }
+
             $result = $value / pow($base, $pow);
         }
 
@@ -154,7 +164,7 @@ class PerfDataFormat
             '%s%0.2f %s',
             $sign,
             $result,
-            $units[abs($pow)]
+            $units[$pow]
         );
     }
 }