From 625fb258d075fda62e4e70cee1bbdc7205cc3396 Mon Sep 17 00:00:00 2001
From: zhongwencool <zhongwencool@gmail.com>
Date: Tue, 2 Aug 2022 14:44:40 +0800
Subject: [PATCH] feat: format variable as iodata instead of io_lib:format to
 reduce memory alloc

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

diff --git a/src/emqx_packet.erl b/src/emqx_packet.erl
index 015f95e0d..8d90a3edc 100644
--- a/src/emqx_packet.erl
+++ b/src/emqx_packet.erl
@@ -429,7 +429,7 @@ format_variable(undefined, _) ->
 format_variable(Variable, undefined) ->
     format_variable(Variable);
 format_variable(Variable, Payload) ->
-    io_lib:format("~s, Payload=~0p", [format_variable(Variable), Payload]).
+    [format_variable(Variable), "Payload=", Payload].
 
 format_variable(#mqtt_packet_connect{
                  proto_ver    = ProtoVer,