Add experimental "OpenSim object memory churn" statistics to output of region console "show stats" command

This aims to capture the amount of memory that OpenSim turns over whilst operating a region.
This memory is not lost - apart from leaks it is reclaimed by the garbage collector.
However, the more memory that gets turned over the more work the GC has to do to reclaim it.

2 files changed, 15 insertions, 8 deletions

diff --git a/OpenSim/Framework/Statistics/BaseStatsCollector.cs b/OpenSim/Framework/Statistics/BaseStatsCollector.cs
index c9e57ce..28ce650 100644
--- a/OpenSim/Framework/Statistics/BaseStatsCollector.cs
+++ b/OpenSim/Framework/Statistics/BaseStatsCollector.cs
@@ -44,14 +44,18 @@ namespace OpenSim.Framework.Statistics
             StringBuilder sb = new StringBuilder(Environment.NewLine);
             sb.Append("MEMORY STATISTICS");
             sb.Append(Environment.NewLine);
-            sb.Append(
-                string.Format(
-                    "Allocated to OpenSim objects: {0} MB\n",
-                    Math.Round(GC.GetTotalMemory(false) / 1024.0 / 1024.0)));
-            sb.Append(
-                string.Format(
-                    "Process memory              : {0} MB\n",
-                    Math.Round(Process.GetCurrentProcess().WorkingSet64 / 1024.0 / 1024.0)));
+
+            sb.AppendFormat(
+                "Allocated to OpenSim objects: {0} MB\n",
+                Math.Round(GC.GetTotalMemory(false) / 1024.0 / 1024.0));
+
+            sb.AppendFormat(
+                "OpenSim object memory churn : {0} KB/s\n",
+                Math.Round((MemoryWatchdog.AverageMemoryChurn * 1000) / 1024.0 / 1024, 3));
+
+            sb.AppendFormat(
+                "Process memory              : {0} MB\n",
+                Math.Round(Process.GetCurrentProcess().WorkingSet64 / 1024.0 / 1024.0));
 
             return sb.ToString();
         }
diff --git a/OpenSim/Framework/Watchdog.cs b/OpenSim/Framework/Watchdog.cs
index 8a74f53..54e3d1a 100644
--- a/OpenSim/Framework/Watchdog.cs
+++ b/OpenSim/Framework/Watchdog.cs
@@ -325,6 +325,9 @@ namespace OpenSim.Framework
                         callback(callbackInfo);
             }
 
+            if (MemoryWatchdog.Enabled)
+                MemoryWatchdog.Update();
+
             m_watchdogTimer.Start();
         }
     }