Set async_packet_handling = true by default

Setting this to true avoids a 500ms or so client freeze when the LLUDP server thread is taken up with processing a UseCircuitCode packet synchronously.
Extensive testing on Wright Plaza appeared to show no bad effects and this seems to reduce login lag considerably.
Of course, a lot of login lag is still coming from other sources.

2 files changed, 3 insertions, 2 deletions

diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
index 161e8c2..821f679 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
@@ -183,7 +183,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             IConfig config = configSource.Configs["ClientStack.LindenUDP"];
             if (config != null)
             {
-                m_asyncPacketHandling = config.GetBoolean("async_packet_handling", false);
+                m_asyncPacketHandling = config.GetBoolean("async_packet_handling", true);
                 m_recvBufferSize = config.GetInt("client_socket_rcvbuf_size", 0);
                 sceneThrottleBps = config.GetInt("scene_throttle_max_bps", 0);
 
diff --git a/bin/OpenSimDefaults.ini b/bin/OpenSimDefaults.ini
index 5ced7d5..de7c44c 100644
--- a/bin/OpenSimDefaults.ini
+++ b/bin/OpenSimDefaults.ini
@@ -328,8 +328,9 @@
     ; already separated from packet handling with a queue, so this will only
     ; affect whether networking internals such as packet decoding and
     ; acknowledgement accounting are done synchronously or asynchronously
+    ; Default is true.
     ;
-    ;async_packet_handling = false
+    ;async_packet_handling = true
 
     ; The client socket receive buffer size determines how many
     ; incoming requests we can process; the default on .NET is 8192