Performance optimizations

.github/workflows/api-compatibility.yml

@@ -32,7 +32,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '8.0.x'
+        dotnet-version: 10.0.x
 
     - name: Install Microsoft.DotNet.ApiCompat.Tool
       run: dotnet tool install --global Microsoft.DotNet.ApiCompat.Tool

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 10.0.x
 
       - name: Build
         run: dotnet build

.github/workflows/publish.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 10.0.x
 
       - name: Build
         run: dotnet build

.gitignore

@@ -110,3 +110,6 @@ UpgradeLog*.XML
 project.lock.json
 .vs/
 .vscode/
+
+# BenchmarkDotNet
+BenchmarkDotNet.Artifacts/

Spiffy.Monitoring.sln

@@ -27,6 +27,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Spiffy.Monitoring.Aws", "sr
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestWebApp", "tests\TestWebApp\TestWebApp.csproj", "{4DF62688-C556-4439-93C1-2E4562E07F42}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Benchmarks", "tests\Benchmarks\Benchmarks.csproj", "{B1A2C3D4-E5F6-7890-ABCD-EF1234567890}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -65,6 +67,10 @@ Global
 		{4DF62688-C556-4439-93C1-2E4562E07F42}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4DF62688-C556-4439-93C1-2E4562E07F42}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4DF62688-C556-4439-93C1-2E4562E07F42}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B1A2C3D4-E5F6-7890-ABCD-EF1234567890}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B1A2C3D4-E5F6-7890-ABCD-EF1234567890}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B1A2C3D4-E5F6-7890-ABCD-EF1234567890}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B1A2C3D4-E5F6-7890-ABCD-EF1234567890}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -77,5 +83,6 @@ Global
 		{9AD4DAE4-10DB-4933-9A28-6D0F994ADC17} = {8DEB13B2-A275-40CB-8D0F-AA672DB5717E}
 		{E7E90469-1E8B-4204-9990-48CD0C42E481} = {8DEB13B2-A275-40CB-8D0F-AA672DB5717E}
 		{4DF62688-C556-4439-93C1-2E4562E07F42} = {2DF31750-1635-4C57-980C-23EA82B2DE53}
+		{B1A2C3D4-E5F6-7890-ABCD-EF1234567890} = {2DF31750-1635-4C57-980C-23EA82B2DE53}
 	EndGlobalSection
 EndGlobal

src/Spiffy.Monitoring/AutoTimer.cs

@@ -1,11 +1,13 @@
-using System;
+using System;
 using System.Diagnostics;
 
 namespace Spiffy.Monitoring
 {
     internal class AutoTimer : ITimedContext
     {
-        readonly Stopwatch _stopwatch = new Stopwatch();
+        private long _startTimestamp;
+        private double _accumulatedMs;
+        private bool _running;
 
         public int Count { get; private set;}
 
@@ -14,11 +16,26 @@ public AutoTimer()
             Start();
         }
 
-        public double ElapsedMilliseconds => _stopwatch.Elapsed.TotalMilliseconds;
+        public double ElapsedMilliseconds
+        {
+            get
+            {
+                var ms = _accumulatedMs;
+                if (_running)
+                {
+                    ms += GetElapsedMs(_startTimestamp);
+                }
+                return ms;
+            }
+        }
 
         public void Dispose()
         {
-            _stopwatch.Stop();
+            if (_running)
+            {
+                _accumulatedMs += GetElapsedMs(_startTimestamp);
+                _running = false;
+            }
         }
 
         public void Resume()
@@ -28,19 +45,26 @@ public void Resume()
 
         public void StartOver()
         {
-            _stopwatch.Reset();
+            _accumulatedMs = 0;
             Count = 0;
+            _running = false;
             Start();
         }
 
         void Start()
         {
-            if (_stopwatch.IsRunning)
+            if (_running)
             {
                 return;
             }
             Count++;
-            _stopwatch.Start();
+            _startTimestamp = Stopwatch.GetTimestamp();
+            _running = true;
+        }
+
+        private static double GetElapsedMs(long startTimestamp)
+        {
+            return (Stopwatch.GetTimestamp() - startTimestamp) * 1000.0 / Stopwatch.Frequency;
         }
     }
 }