From 4eec83b0e57958eb99b14f70b145841b07254394 Mon Sep 17 00:00:00 2001
From: Zhongwen Deng <zhongwencool@gmail.com>
Date: Fri, 25 Feb 2022 14:19:57 +0800
Subject: [PATCH] fix: memsup's memory alway false.

---
 apps/emqx/src/emqx_os_mon.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/emqx/src/emqx_os_mon.erl b/apps/emqx/src/emqx_os_mon.erl
index b76b204f6..f9d5fc95d 100644
--- a/apps/emqx/src/emqx_os_mon.erl
+++ b/apps/emqx/src/emqx_os_mon.erl
@@ -159,7 +159,7 @@ ensure_system_memory_alarm(HW) ->
     case erlang:whereis(memsup) of
         undefined -> ok;
         _Pid ->
-            {Allocated, Total, _Worst} = memsup:get_memory_data(),
+            {Total, Allocated, _Worst} = memsup:get_memory_data(),
             case Total =/= 0 andalso Allocated/Total * 100 > HW of
                 true -> emqx_alarm:activate(high_system_memory_usage, #{high_watermark => HW});
                 false -> ok