Add some values to the SimulatorFeatures cap's OpenSimExtras section:

SimulatorFPS: The actual optimal FPS of the simulator, un-fudged
SimulatorFPSFactor: The fudge factor that is applied to the stats sent to the viewer
SimulatorFPSWarnPercent: The percentage below which a lag meter should go to amber
SimulatorFPSCritPercent: The percentage below which a lag meter should go to red
To display the real values, a viewer would divide the reported FPS by the SimulatorFPSFactor and use that to calculate the percentage of SimulatorFPS. E.g. reported is 55fps, SimulatorFPSFactor is 5.0 and SimulatorFPS is 11.

2 files changed, 38 insertions, 1 deletions

diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index 32b45ac..2fcb78d 100755
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -39,6 +39,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenMetaverse.Packets;
 using OpenMetaverse.Imaging;
+using OpenMetaverse.StructuredData;
 using OpenSim.Framework;
 using OpenSim.Framework.Monitoring;
 using OpenSim.Services.Interfaces;
@@ -360,6 +361,8 @@ namespace OpenSim.Region.Framework.Scenes
         /// Frame time
         /// </remarks>
                 public float FrameTime { get; private set; }
+                public int FrameTimeWarnPercent { get; private set; }
+                public int FrameTimeCritPercent { get; private set; }
 
         // Normalize the frame related stats to nominal 55fps for viewer and scripts option
         // see SimStatsReporter.cs
@@ -860,6 +863,8 @@ namespace OpenSim.Region.Framework.Scenes
         {
             m_config = config;
             FrameTime = 0.0908f;
+            FrameTimeWarnPercent = 60;
+            FrameTimeCritPercent = 40;
             Normalized55FPS = true;
             MinMaintenanceTime = 1;
             SeeIntoRegion = true;
@@ -1101,6 +1106,8 @@ namespace OpenSim.Region.Framework.Scenes
                 }
 
                 FrameTime                 = startupConfig.GetFloat( "FrameTime", FrameTime);
+                FrameTimeWarnPercent      = startupConfig.GetInt( "FrameTimeWarnPercent", FrameTimeWarnPercent);
+                FrameTimeCritPercent      = startupConfig.GetInt( "FrameTimeCritPercent", FrameTimeCritPercent);
                 Normalized55FPS           = startupConfig.GetBoolean( "Normalized55FPS", Normalized55FPS);
 
                 m_update_backup           = startupConfig.GetInt("UpdateStorageEveryNFrames",         m_update_backup);
@@ -1254,6 +1261,28 @@ namespace OpenSim.Region.Framework.Scenes
 
             if (dm != null)
                 m_eventManager.OnPermissionError += dm.SendAlertToUser;
+
+            ISimulatorFeaturesModule fm = RequestModuleInterface<ISimulatorFeaturesModule>();
+            if (fm != null)
+            {
+                OSD openSimExtras;
+                OSDMap openSimExtrasMap;
+
+                if (!fm.TryGetFeature("OpenSimExtras", out openSimExtras))
+                    openSimExtras = new OSDMap();
+
+                float statisticsFPSfactor = 1.0f;
+                if(Normalized55FPS)
+                    statisticsFPSfactor = 55.0f * FrameTime;
+
+                openSimExtrasMap = (OSDMap)openSimExtras;
+                openSimExtrasMap["SimulatorFPS"] = OSD.FromReal(1.0f / FrameTime);
+                openSimExtrasMap["SimulatorFPSFactor"] = OSD.FromReal(statisticsFPSfactor);
+                openSimExtrasMap["SimulatorFPSWarnPercent"] = OSD.FromInteger(FrameTimeWarnPercent);
+                openSimExtrasMap["SimulatorFPSCritPercent"] = OSD.FromInteger(FrameTimeCritPercent);
+
+                fm.AddFeature("OpenSimExtras", openSimExtrasMap);
+            }
         }
 
         protected virtual void RegisterDefaultSceneEvents()
diff --git a/bin/OpenSimDefaults.ini b/bin/OpenSimDefaults.ini
index fadd359..1481fca 100644
--- a/bin/OpenSimDefaults.ini
+++ b/bin/OpenSimDefaults.ini
@@ -174,7 +174,7 @@
         ; Adicionaly they are scaled to values they whould have on a system running at a nominal 55 frames per second rate
         ; The scale factor it 55 * FrameTime, corresponding to 5 with default configuration
         ; You can choose to not apply this scale factor setting Normalized55FPS to false.
-        ; Normalized55FPS = false
+        ; Normalized55FPS = true
         
     ; Main Frame time
         ; This defines the rate of several simulation events.
@@ -185,6 +185,14 @@
         ; changing this value, you need to change some of the following *EveryNFrames so their actions timing remains the same
     FrameTime = 0.0909
 
+    ; The values below represent the percentage of the target frame time that,
+    ; when underrun, should trigger yellow or red in the lag meter.
+    ; Less than 60% of FPS is amber by default, less then 40% is red.
+    ; These values are advisory. Viewers may choose to not use them but it is
+    ; encouraged that they do.
+    ; FrameTimeWarnPercent = 60;
+    ; FrameTimeCritPercent = 40;
+
     ; Send scheduled updates to objects in the scene
     ; This must be a whole number 
     UpdateObjectsEveryNFrames = 1;