Add instructions on how to run benchmarks.

README.md

@@ -7,9 +7,34 @@ Installation
 ============
 
 <pre>
-$ make install
+$ luarocks install https://github.com/Neopallium/lua-zmq/raw/master/rockspecs/lua-zmq-scm-1.rockspec
 </pre>
 
+Running benchmarks
+==================
+
+When running the benchmarks you will need run two different scripts (one 'local' and one 'remote').  Both scripts can be run on the same computer or on different computers.  Make sure to start the 'local' script first.
+
+Throughput benchmark:
+<pre>
+# first start local script
+$ luajit-2 perf/local_thr.lua "tcp://lo:5555" 50 1000000
+
+# then in another window start remote script
+$ luajit-2 perf/remote_thr.lua "tcp://localhost:5555" 50 1000000
+</pre>
+
+Latency benchmark:
+<pre>
+# first start local script
+$ luajit-2 perf/local_lat.lua "tcp://lo:5555" 1 100000
+
+# then in another window start remote script
+$ luajit-2 perf/remote_lat.lua "tcp://localhost:5555" 1 100000
+</pre>
+
+You can disable the FFI support when running under LuaJIT2 by passing a forth parameter "disable_ffi"
+
 API
 ===