From e37fd2d56b5f059a1d5afe821cd4b6f07b89b68e Mon Sep 17 00:00:00 2001
From: skarg <skarg@1e814d3a-8a88-4260-be86-c0dc25669c1e>
Date: Thu, 19 Nov 2009 18:21:56 +0000
Subject: [PATCH] Updated comment.

---
 bacnet-stack/ports/linux/rs485.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bacnet-stack/ports/linux/rs485.c b/bacnet-stack/ports/linux/rs485.c
index 4efd2fa2..242928ce 100644
--- a/bacnet-stack/ports/linux/rs485.c
+++ b/bacnet-stack/ports/linux/rs485.c
@@ -57,6 +57,10 @@
 /* Posix serial programming reference:
 http://www.easysw.com/~mike/serial/serial.html */
 
+/* Use ionice wrapper to improve serial performance:
+   $ sudo ionice -c 1 -n 0 ./bin/bacserv 12345
+*/
+
 /* handle returned from open() */
 static int RS485_Handle = -1;
 /* baudrate settings are defined in <asm/termbits.h>, which is