diff --git a/ChangeLog b/ChangeLog
index c481dfecc2..e6abf606ec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Mar 19 11:39:29 2007  Minero Aoki  <aamine@loveruby.net>
+
+	* lib/net/protocol.rb (rbuf_read): extend buffer size for speed.
+
 Sun Mar 18 04:23:52 2007  Akinori MUSHA  <knu@iDaemons.org>
 
 	* NEWS: Add a note about the new `date' library defining
diff --git a/lib/net/protocol.rb b/lib/net/protocol.rb
index d722fdcbd4..dc23c14dfa 100644
--- a/lib/net/protocol.rb
+++ b/lib/net/protocol.rb
@@ -128,9 +128,11 @@ module Net # :nodoc:
 
     private
 
+    BUFSIZE = 1024 * 16
+
     def rbuf_fill
       timeout(@read_timeout) {
-        @rbuf << @io.sysread(1024)
+        @rbuf << @io.sysread(BUFSIZE)
       }
     end