From f3e8b0ce2843c2f3212fa2bc7407532ecb86044d Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Thu, 18 Feb 2016 17:12:17 -0600
Subject: [PATCH] Update README

---
 configs/sim/README.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configs/sim/README.txt b/configs/sim/README.txt
index d6ac28b22b9..350d4b34404 100644
--- a/configs/sim/README.txt
+++ b/configs/sim/README.txt
@@ -252,6 +252,12 @@ SMP
     +CONFIG_SMP_NCPUS=2
     +CONFIG_SMP_IDLETHREAD_STACKSIZE=2048
 
+  You also must enable near-realtime-performance otherwise even long
+  timeouts will expire before a CPU thread even has a chance to execute.
+
+    -# CONFIG_SIM_WALLTIME is not set
+    +CONFIG_SIM_WALLTIME=y
+
   And you can enable some additional debug output with:
 
     -# CONFIG_DEBUG_SCHED is not set