Make reported sim fps more accurate, in line with frame time ms

Also remove some unused fields and improve naming on others.

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -137,8 +137,6 @@ namespace OpenSim.Region.Framework.Scenes
         protected IDialogModule m_dialogModule;
         protected IEntityTransferModule m_teleportModule;
         protected ICapabilitiesModule m_capsModule;
-        // Central Update Loop
-        protected int m_fps = 10;
 
         /// <summary>
         /// Current scene frame number
@@ -149,8 +147,20 @@ namespace OpenSim.Region.Framework.Scenes
             protected set;
         }
 
-        protected float m_timespan = 0.089f;
+        /// <summary>
-        protected DateTime m_lastupdate = DateTime.UtcNow;
+        /// The minimum length of time in seconds that will be taken for a scene frame.  If the frame takes less time then we
+        /// will sleep for the remaining period.
+        /// </summary>
+        /// <remarks>
+        /// One can tweak this number to experiment.  One current effect of reducing it is to make avatar animations
+        /// occur too quickly (viewer 1) or with even more slide (viewer 2).
+        /// </remarks>
+        protected float m_minFrameTimespan = 0.089f;
+
+        /// <summary>
+        /// The time of the last frame update.
+        /// </summary>
+        protected DateTime m_lastFrameUpdate = DateTime.UtcNow;
 
         // TODO: Possibly stop other classes being able to manipulate this directly.
         private SceneGraph m_sceneGraph;
@@ -1211,7 +1221,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         public override void Update()
         {        
-            TimeSpan SinceLastFrame = DateTime.UtcNow - m_lastupdate;
+            TimeSpan SinceLastFrame = DateTime.UtcNow - m_lastFrameUpdate;
             float physicsFPS = 0f;
 
             int maintc = Util.EnvironmentTickCount();
@@ -1263,7 +1273,7 @@ namespace OpenSim.Region.Framework.Scenes
                 if (Frame % m_update_physics == 0)
                 {
                     if (m_physics_enabled)
-                        physicsFPS = m_sceneGraph.UpdatePhysics(Math.Max(SinceLastFrame.TotalSeconds, m_timespan));
+                        physicsFPS = m_sceneGraph.UpdatePhysics(Math.Max(SinceLastFrame.TotalSeconds, m_minFrameTimespan));
                     if (SynchronizeScene != null)
                         SynchronizeScene(this);
                 }
@@ -1382,11 +1392,11 @@ namespace OpenSim.Region.Framework.Scenes
             }
             finally
             {
-                m_lastupdate = DateTime.UtcNow;
+                m_lastFrameUpdate = DateTime.UtcNow;
             }
 
             maintc = Util.EnvironmentTickCountSubtract(maintc);
-            maintc = (int)(m_timespan * 1000) - maintc;
+            maintc = (int)(m_minFrameTimespan * 1000) - maintc;
 
             if (maintc > 0)
                 Thread.Sleep(maintc);

OpenSim/Region/Framework/Scenes/SceneGraph.cs

@@ -174,6 +174,11 @@ namespace OpenSim.Region.Framework.Scenes
             });
         }
 
+        /// <summary>
+        /// Perform a physics frame update.
+        /// </summary>
+        /// <param name="elapsed"></param>
+        /// <returns></returns>
         protected internal float UpdatePhysics(double elapsed)
         {
             lock (m_syncRoot)

OpenSim/Region/Framework/Scenes/SimStatsReporter.cs

@@ -37,6 +37,9 @@ namespace OpenSim.Region.Framework.Scenes
 {
     public class SimStatsReporter
     {
+//        private static readonly log4net.ILog m_log
+//            = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+
         public delegate void SendStatResult(SimStats stats);
 
         public delegate void YourStatsAreWrong();
@@ -165,18 +168,9 @@ namespace OpenSim.Region.Framework.Scenes
 
 #region various statistic googly moogly
 
-                // Our FPS is actually 10fps, so multiplying by 5 to get the amount that people expect there
-                // 0-50 is pretty close to 0-45
-                float simfps = (int) ((m_fps * 5));
                 // save the reported value so there is something available for llGetRegionFPS 
-                lastReportedSimFPS = (float)simfps / statsUpdateFactor;
+                lastReportedSimFPS = (float)m_fps / statsUpdateFactor;
 
-                //if (simfps > 45)
-                //simfps = simfps - (simfps - 45);
-                //if (simfps < 0)
-                //simfps = 0;
-
-                //
                 float physfps = ((m_pfps / 1000));
 
                 //if (physfps > 600)
@@ -197,7 +191,7 @@ namespace OpenSim.Region.Framework.Scenes
                 // 'statsUpdateFactor' is how often stats packets are sent in seconds. Used below to change
                 // values to X-per-second values.
 
-                for (int i = 0; i<21;i++)
+                for (int i = 0; i < 21; i++)
                 {
                     sb[i] = new SimStatsPacket.StatBlock();
                 }
@@ -206,7 +200,7 @@ namespace OpenSim.Region.Framework.Scenes
                 sb[0].StatValue = (Single.IsNaN(m_timeDilation)) ? 0.1f : m_timeDilation ; //((((m_timeDilation + (0.10f * statsUpdateFactor)) /10)  / statsUpdateFactor));
 
                 sb[1].StatID = (uint) Stats.SimFPS;
-                sb[1].StatValue = simfps/statsUpdateFactor;
+                sb[1].StatValue = m_fps/statsUpdateFactor;
 
                 sb[2].StatID = (uint) Stats.PhysicsFPS;
                 sb[2].StatValue = physfps / statsUpdateFactor;
@@ -272,7 +266,8 @@ namespace OpenSim.Region.Framework.Scenes
               
                 SimStats simStats 
                     = new SimStats(
-                        ReportingRegion.RegionLocX, ReportingRegion.RegionLocY, regionFlags, (uint)m_objectCapacity, rb, sb, m_scene.RegionInfo.originRegionID);
+                        ReportingRegion.RegionLocX, ReportingRegion.RegionLocY, regionFlags, (uint)m_objectCapacity,
+                        rb, sb, m_scene.RegionInfo.originRegionID);
 
                 handlerSendStatResult = OnSendStatsResult;
                 if (handlerSendStatResult != null)
@@ -395,30 +390,32 @@ namespace OpenSim.Region.Framework.Scenes
         {
             m_frameMS += ms;
         }
+
         public void addNetMS(int ms)
         {
             m_netMS += ms;
         }
+
         public void addAgentMS(int ms)
         {
             m_agentMS += ms;
         }
+
         public void addPhysicsMS(int ms)
         {
             m_physicsMS += ms;
         }
+
         public void addImageMS(int ms)
         {
             m_imageMS += ms;
         }
+
         public void addOtherMS(int ms)
         {
             m_otherMS += ms;
         }
 
-//        private static readonly log4net.ILog m_log
-//            = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
-
         public void AddPendingDownloads(int count)
         {
             m_pendingDownloads += count;