(health) add some comments

(cherry picked from commit 71bd852f)

(health) add some comments
(cherry picked from commit 71bd852f)
9374fda5 · Ad Schellevis · Franco Fichtner · aa12ce4a · 9374fda5
Commit 9374fda5 authored Feb 21, 2016 by Ad Schellevis Committed by Franco Fichtner Feb 22, 2016
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SystemhealthController.php ...llers/OPNsense/Diagnostics/Api/SystemhealthController.php +2 -0

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--- a/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/SystemhealthController.php
+++ b/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/SystemhealthController.php
@@ -567,6 +567,8 @@ class SystemhealthController extends ApiControllerBase
                $inverse = false;
            }

+            // The zoom (timespan) level determines the number of datasets to
+            // use in the equation. All the irrelevant sets are removed here. 
            if ((int)$detail >= 0) {
                for ($count = count($xml->rra) - 1; $count > $detail; $count--) {
                    unset($xml->rra[$count]);