From 320f489649c05840a43ae022c19ac8336130fa14 Mon Sep 17 00:00:00 2001
From: Tim Connors <tconnors@rather.puzzling.org>
Date: Thu, 2 Jan 2020 00:02:52 +1100
Subject: [PATCH] add couple of comments

---
 R710-IPMI-TEMP/fan-speed-control.pl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/R710-IPMI-TEMP/fan-speed-control.pl b/R710-IPMI-TEMP/fan-speed-control.pl
index d685ca8..0f1f887 100755
--- a/R710-IPMI-TEMP/fan-speed-control.pl
+++ b/R710-IPMI-TEMP/fan-speed-control.pl
@@ -185,9 +185,13 @@ END
     set_fans_servo($ambient_temp, \@cputemps, \@coretemps, \@hddtemps);
   }
 
+  # every 60 seconds, invalidate the cache of the slowly changing hdd
+  # temperatures to allow them to be refreshed
   if (time - $last_reset_hddtemps > 60) {
     @hddtemps=();
   }
+  # every 60 seconds, invalidate the cache of the slowly changing
+  # ambient temperatures to allow them to be refreshed
   if (time - $last_reset_ambient_ipmitemps > 60) {
     @ambient_ipmitemps=();
   }