From 0f87a99e54d0665824d055ce1dcf5f4240dec0bc Mon Sep 17 00:00:00 2001
From: Justin Clark-Casey (justincc)
Date: Tue, 29 Jul 2014 18:09:11 +0100
Subject: Add debug mechanism for only sending 1 in N AgentUpdate packets to
 child agents.

Allows experiments in manually reducing updates under heavy load.
Activated by "debug scene set client-upd-per" console command.
In a simple test, can send as few as every 4th update before observed movement starts becoming disturbingly rubber-banded.
---
 .../World/SceneCommands/SceneCommandsModule.cs               | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'OpenSim/Region/OptionalModules/World/SceneCommands')

diff --git a/OpenSim/Region/OptionalModules/World/SceneCommands/SceneCommandsModule.cs b/OpenSim/Region/OptionalModules/World/SceneCommands/SceneCommandsModule.cs
index e49c95c..9e4f344 100644
--- a/OpenSim/Region/OptionalModules/World/SceneCommands/SceneCommandsModule.cs
+++ b/OpenSim/Region/OptionalModules/World/SceneCommands/SceneCommandsModule.cs
@@ -100,6 +100,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Attachments
                     + "client-pos-upd - the tolerance before clients are updated with new rotation information for an avatar.\n"
                     + "client-rot-upd - the tolerance before clients are updated with new rotation information for an avatar.\n"
                     + "client-vel-upd - the tolerance before clients are updated with new velocity information for an avatar.\n"
+                    + "client-upd-per - if greater than 1, terse updates are only sent to child agents on every n updates.\n"
                     + "collisions     - if false then collisions with other objects are turned off.\n"
                     + "pbackup        - if false then periodic scene backup is turned off.\n"
                     + "physics        - if false then all physics objects are non-physical.\n"
@@ -119,6 +120,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Attachments
                     + "client-pos-upd - the tolerance before clients are updated with new rotation information for an avatar.\n"
                     + "client-rot-upd - the tolerance before clients are updated with new rotation information for an avatar.\n"
                     + "client-vel-upd - the tolerance before clients are updated with new velocity information for an avatar.\n"
+                    + "client-upd-per - if greater than 1, terse updates are only sent to child agents on every n updates.\n"
                     + "collisions     - if false then collisions with other objects are turned off.\n"
                     + "pbackup        - if false then periodic scene backup is turned off.\n"
                     + "physics        - if false then all physics objects are non-physical.\n"
@@ -153,6 +155,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Attachments
             cdl.AddRow("client-pos-upd", m_scene.ClientPositionUpdateTolerance);
             cdl.AddRow("client-rot-upd", m_scene.ClientRotationUpdateTolerance);
             cdl.AddRow("client-vel-upd", m_scene.ClientVelocityUpdateTolerance);
+            cdl.AddRow("client-upd-per", m_scene.ChildTerseUpdatePeriod);
             cdl.AddRow("pbackup", m_scene.PeriodicBackup);
             cdl.AddRow("physics", m_scene.PhysicsEnabled);
             cdl.AddRow("scripting", m_scene.ScriptsEnabled);
@@ -245,6 +248,15 @@ namespace OpenSim.Region.OptionalModules.Avatar.Attachments
                     m_scene.ClientVelocityUpdateTolerance = newValue;    
             }
 
+            if (options.ContainsKey("client-upd-per"))
+            {
+                int newValue;
+
+                // FIXME: This can only come from the console at the moment but might not always be true.
+                if (ConsoleUtil.TryParseConsoleNaturalInt(MainConsole.Instance, options["client-upd-per"], out newValue))
+                    m_scene.ChildTerseUpdatePeriod = newValue;    
+            }
+
             if (options.ContainsKey("pbackup"))
             {
                 bool active;
-- 
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