From 29530f6bf5e0b5a055a6449cd5337d6412094884 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Wed, 5 Oct 2011 16:34:09 +0000
Subject: [PATCH] srpt/README: Add note about DEVICE.threads_num

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@3889 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 srpt/README | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/srpt/README b/srpt/README
index 0644d8629..65a631311 100644
--- a/srpt/README
+++ b/srpt/README
@@ -291,6 +291,16 @@ Notes about ib_srpt
   that time CPU usage will be high.
 
 
+Performance Notes - Target Side
+-------------------------------
+
+When using high-latency storage devices (hard disks), the default value
+choosen by SCST for DEVICE.threads_num should be fine. When using low-latency
+storage devices though (SSDs), DEVICE.threads_num should be set to 1 or 2 in
+/etc/scst.conf in order to reach optimal performance for small block sizes
+(e.g. 4 KB).
+
+
 Performance Notes - Initiator Side
 ----------------------------------