* Start recording initial complete avatar inventory retrieval failures from the region server

* In theory, this should be a somewhat useless statistic since the user server will already have tried to use the inventory service to retrieve the avatar's skeleton.  If this 
fails, login is halted completely.
* Nonetheless I'm recording it anyway just to see whether it happens (yes, I'm too lazy to scan the logs...)

OpenSim/Framework/Statistics/SimExtraStatsCollector.cs

@@ -43,11 +43,20 @@ namespace OpenSim.Framework.Statistics
         private long assetCacheMemoryUsage;
         private long textureCacheMemoryUsage;
         
+        private long inventoryServiceRetrievalFailures;
+        
         public long AssetsInCache { get { return assetsInCache; } }
         public long TexturesInCache { get { return texturesInCache; } }
         public long AssetCacheMemoryUsage { get { return assetCacheMemoryUsage; } }
         public long TextureCacheMemoryUsage { get { return textureCacheMemoryUsage; } }
         
+        /// <summary>
+        /// Number of known failures to retrieve avatar inventory from the inventory service.  This does not
+        /// cover situations where the inventory service accepts the request but never returns any data, since
+        /// we do not yet timeout this situation.
+        /// </summary>
+        public long InventoryServiceRetrievalFailures { get { return inventoryServiceRetrievalFailures; } }
+        
         /// <summary>
         /// Retain a dictionary of all packet queues stats reporters
         /// </summary>
@@ -70,6 +79,11 @@ namespace OpenSim.Framework.Statistics
             }
         }  
         
+        public void AddInventoryServiceRetrievalFailure()
+        {
+            inventoryServiceRetrievalFailures++;
+        }
+        
         /// <summary>
         /// Register as a packet queue stats provider
         /// </summary>
@@ -111,6 +125,14 @@ Texture cache contains {2,6} textures using {3,10:0.000}K" + Environment.NewLine
                     AssetsInCache, AssetCacheMemoryUsage / 1024.0, 
                     TexturesInCache, TextureCacheMemoryUsage / 1024.0));
             
+            sb.Append(Environment.NewLine);
+            sb.Append("INVENTORY STATISTICS");
+            sb.Append(Environment.NewLine);
+            sb.Append(
+                string.Format(
+                    "Initial inventory caching failures: {0}" + Environment.NewLine,
+                    InventoryServiceRetrievalFailures));
+                                    
             sb.Append(Environment.NewLine);
             sb.Append("PACKET QUEUE STATISTICS");
             sb.Append(Environment.NewLine);

OpenSim/Region/Communications/OGS1/OGS1InventoryService.cs

@@ -35,6 +35,7 @@ using OpenSim.Framework;
 using OpenSim.Framework.Communications;
 using OpenSim.Framework.Communications.Cache;
 using OpenSim.Framework.Servers;
+using OpenSim.Framework.Statistics;
 
 namespace OpenSim.Region.Communications.OGS1
 {
@@ -79,6 +80,9 @@ namespace OpenSim.Region.Communications.OGS1
                 }
                 catch (WebException e)
                 {
+                    if (StatsManager.SimExtraStats != null)
+                        StatsManager.SimExtraStats.AddInventoryServiceRetrievalFailure();
+                    
                     m_log.ErrorFormat("[OGS1 INVENTORY SERVICE]: Request inventory operation failed, {0} {1}", 
                         e.Source, e.Message);                        
                 }

prebuild.xml

@@ -722,9 +722,10 @@
       <Reference name="System.Runtime.Remoting"/>
       <Reference name="OpenSim.Framework"/>
       <Reference name="OpenSim.Data" />     
+      <Reference name="OpenSim.Framework.Communications" />
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Framework.Servers"/>
-      <Reference name="OpenSim.Framework.Communications" />
+      <Reference name="OpenSim.Framework.Statistics"/>
       <Reference name="OpenSim.Region.Communications.Local" />
       <Reference name="libsecondlife.dll"/>
       <Reference name="XMLRPC.dll"/>