* Add asset/texture cache statistics to region server console

* You can type 'stats' at the REGION# prompt to get this information in grid or standalone mode
* Don't take these numbers as gospel yet, since for some reason textures displayed from inventory which require downloading from the server are being recorded as assets 
rather than textures
* But I don't have any reason to believe they aren't broadly accurate.
* I've put these in so I can tell whether the high memory usage on regions is down to the asset/texture cache
* This will require a prebuild
* DEV: Only adds needed to be implemented since, as far as I can tell, assets cached are currently never released.  For my part, seeing large cache memory numbers will 
provoke me to think about doing something about this.
* DEV: Now switched to using a singleton to get the stats reporters rather than threading the object through various layers
* DEV: Will refactor the other server stats reporters to do this in one of the next commits

OpenSim/Framework/Communications/Cache/AssetCache.cs

@@ -31,7 +31,9 @@ using System.Collections.Generic;
 using System.Threading;
 using libsecondlife;
 using libsecondlife.Packets;
+
 using OpenSim.Framework.Console;
+using OpenSim.Framework.Statistics;
 
 namespace OpenSim.Framework.Communications.Cache
 {
@@ -223,6 +225,10 @@ namespace OpenSim.Framework.Communications.Cache
                 {                    
                     TextureImage textur = new TextureImage(asset);                                        
                     Textures.Add(textur.FullID, textur);
+                    
+                    if (StatsManager.SimExtraStats != null)
+                        StatsManager.SimExtraStats.AddTexture(textur);
+                    
                     if (asset.Temporary)
                     {
                         result = "Added to cache";
@@ -244,6 +250,10 @@ namespace OpenSim.Framework.Communications.Cache
                 {
                     AssetInfo assetInf = new AssetInfo(asset);
                     Assets.Add(assetInf.FullID, assetInf);
+                    
+                    if (StatsManager.SimExtraStats != null)
+                        StatsManager.SimExtraStats.AddAsset(assetInf);
+                    
                     if (asset.Temporary)
                     {
                         result = "Added to cache";
@@ -294,6 +304,10 @@ namespace OpenSim.Framework.Communications.Cache
                     if (!Textures.ContainsKey(image.FullID))
                     {                        
                         Textures.Add(image.FullID, image);
+                        
+                        if (StatsManager.SimExtraStats != null)
+                            StatsManager.SimExtraStats.AddTexture(image);
+                        
                         if (RequestedTextures.ContainsKey(image.FullID))
                         {
                             AssetRequest req = RequestedTextures[image.FullID];
@@ -312,6 +326,10 @@ namespace OpenSim.Framework.Communications.Cache
                     if (!Assets.ContainsKey(assetInf.FullID))
                     {
                         Assets.Add(assetInf.FullID, assetInf);
+                        
+                        if (StatsManager.SimExtraStats != null)
+                            StatsManager.SimExtraStats.AddAsset(assetInf);
+                        
                         if (RequestedAssets.ContainsKey(assetInf.FullID))
                         {
                             AssetRequest req = RequestedAssets[assetInf.FullID];

OpenSim/Framework/Statistics/SimExtraStatsReporter.cs

@@ -0,0 +1,70 @@
+/*
+* Copyright (c) Contributors, http://opensimulator.org/
+* See CONTRIBUTORS.TXT for a full list of copyright holders.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above copyright
+*       notice, this list of conditions and the following disclaimer in the
+*       documentation and/or other materials provided with the distribution.
+*     * Neither the name of the OpenSim Project nor the
+*       names of its contributors may be used to endorse or promote products
+*       derived from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+* 
+*/
+
+using OpenSim.Framework;
+
+namespace OpenSim.Framework.Statistics
+{  
+    public class SimExtraStatsReporter
+    {
+        private long assetsInCache;
+        private long texturesInCache;        
+        private long assetCacheMemoryUsage;
+        private long textureCacheMemoryUsage;
+        
+        public long AssetsInCache { get { return assetsInCache; } }
+        public long TexturesInCache { get { return texturesInCache; } }
+        public long AssetCacheMemoryUsage { get { return assetCacheMemoryUsage; } }
+        public long TextureCacheMemoryUsage { get { return textureCacheMemoryUsage; } }
+        
+        public void AddAsset(AssetBase asset)
+        {
+            assetsInCache++;
+            assetCacheMemoryUsage += asset.Data.Length;
+        }
+        
+        public void AddTexture(AssetBase image)
+        {
+            texturesInCache++;
+            textureCacheMemoryUsage += image.Data.Length;
+        }        
+
+        /// <summary>
+        /// Report back collected statistical information.
+        /// </summary>
+        /// <returns></returns>
+        public string Report()
+        {            
+            return string.Format(
+@"Asset   cache contains {0,6} assets   using {1,10:0.000}K
+Texture cache contains {2,6} textures using {3,10:0.000}K",
+                AssetsInCache, AssetCacheMemoryUsage / 1024.0, 
+                TexturesInCache, TextureCacheMemoryUsage / 1024.0);
+        }        
+    }
+}

OpenSim/Framework/Statistics/StatsManager.cs

@@ -0,0 +1,53 @@
+/*
+* Copyright (c) Contributors, http://opensimulator.org/
+* See CONTRIBUTORS.TXT for a full list of copyright holders.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above copyright
+*       notice, this list of conditions and the following disclaimer in the
+*       documentation and/or other materials provided with the distribution.
+*     * Neither the name of the OpenSim Project nor the
+*       names of its contributors may be used to endorse or promote products
+*       derived from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+* 
+*/
+
+namespace OpenSim.Framework.Statistics
+{    
+    /// <summary>
+    /// Singleton used to provide access to statistics reporters
+    /// </summary>
+    public class StatsManager
+    {
+        private static SimExtraStatsReporter simExtraStats;                
+        
+        public static SimExtraStatsReporter SimExtraStats { get { return simExtraStats; } }
+        
+        private StatsManager()
+        {
+        }
+        
+        /// <summary>
+        /// Start recording statistics.  Should only be called once - calling again will reset statistic
+        /// counts.
+        /// </summary>
+        public static void StartCollecting()
+        {
+            simExtraStats = new SimExtraStatsReporter();
+        }
+    }
+}

OpenSim/Grid/AssetServer/Main.cs

@@ -184,7 +184,7 @@ namespace OpenSim.Grid.AssetServer
                     break;
                     
                 case "stats":
-                    MainLog.Instance.Notice("STATS", Environment.NewLine + m_stats.Report());
+                    m_console.Notice("STATS", Environment.NewLine + m_stats.Report());
                     break;
 
                 case "shutdown":

OpenSim/Region/Application/OpenSimMain.cs

@@ -39,6 +39,7 @@ using OpenSim.Framework;
 using OpenSim.Framework.Communications.Cache;
 using OpenSim.Framework.Console;
 using OpenSim.Framework.Servers;
+using OpenSim.Framework.Statistics;
 using OpenSim.Region.ClientStack;
 using OpenSim.Region.Communications.Local;
 using OpenSim.Region.Communications.OGS1;
@@ -244,7 +245,7 @@ namespace OpenSim
                 if (m_storageDll == "OpenSim.DataStore.MonoSqlite.dll") 
                 {
                     m_storageDll = "OpenSim.Framework.Data.SQLite.dll";
-                    Console.WriteLine("WARNING: OpenSim.DataStore.MonoSqlite.dll is depreciated. Set storage_plugin to OpenSim.Framework.Data.SQLite.dll.");
+                    Console.WriteLine("WARNING: OpenSim.DataStore.MonoSqlite.dll is deprecated. Set storage_plugin to OpenSim.Framework.Data.SQLite.dll.");
                     Thread.Sleep(3000);
                 }
                 m_storageConnectionString
@@ -303,6 +304,8 @@ namespace OpenSim
             m_log = CreateLog();
             MainLog.Instance = m_log;          
 
+            StatsManager.StartCollecting();
+            
             // Do baseclass startup sequence: OpenSim.Region.ClientStack.RegionApplicationBase.StartUp
             // TerrainManager, StorageManager, HTTP Server
             // This base will call abstract Initialize
@@ -703,6 +706,7 @@ namespace OpenSim
                     m_log.Error("show uptime - show simulator startup and uptime.");
                     m_log.Error("show users - show info about connected users.");
                     m_log.Error("show modules - shows info aboutloaded modules.");
+                    m_log.Error("stats - statistical information for this server not displayed in the client");
                     m_log.Error("shutdown - disconnect all clients and shutdown.");
                     m_log.Error("terrain help - show help for terrain commands.");
                     break;
@@ -884,6 +888,19 @@ namespace OpenSim
                     }
                     break;
                 
+                case "stats":
+                    if (StatsManager.SimExtraStats != null)
+                    {
+                        MainLog.Instance.Notice(
+                            "STATS", Environment.NewLine + StatsManager.SimExtraStats.Report());                    
+                    }
+                    else
+                    {
+                        MainLog.Instance.Notice("STATS", "Extra statistics collection has not been enabled");
+                    }
+                    break;
+                
+
                 default:
                     m_log.Error("Unknown command");
                     break;

prebuild.xml

@@ -93,6 +93,7 @@
 
       <ReferencePath>../../../bin/</ReferencePath>
       <Reference name="System"/>
+      <Reference name="OpenSim.Framework"/>
 
       <Files>
         <Match pattern="*.cs" recurse="true"/>