From 0240016c1642a5f534b44acf1c82bf555ad06fd5 Mon Sep 17 00:00:00 2001
From: Alex Peck <alexpeck@microsoft.com>
Date: Thu, 14 Jul 2022 11:47:22 -0700
Subject: [PATCH 1/3] write to excel

---
 .../Wikibench/Analysis.cs                      | 18 ++++++++++++++++++
 .../Wikibench/Runner.cs                        |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/BitFaster.Caching.HitRateAnalysis/Wikibench/Analysis.cs b/BitFaster.Caching.HitRateAnalysis/Wikibench/Analysis.cs
index 0bc36941..68c45ad1 100644
--- a/BitFaster.Caching.HitRateAnalysis/Wikibench/Analysis.cs
+++ b/BitFaster.Caching.HitRateAnalysis/Wikibench/Analysis.cs
@@ -1,9 +1,12 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using BitFaster.Caching.Lru;
+using CsvHelper;
 
 namespace BitFaster.Caching.HitRateAnalysis.Wikibench
 {
@@ -18,6 +21,12 @@ public Analysis(int cacheSize)
             this.classicLru = new ClassicLru<Uri, int>(1, cacheSize, EqualityComparer<Uri>.Default);
         }
 
+        public int CacheSize => this.concurrentLru.Capacity;
+
+        public double ConcurrentLruHitRate => this.concurrentLru.HitRatio;
+
+        public double ClassicLruHitRate => this.classicLru.HitRatio;
+
         public void TestUri(Uri uri)
         {
             this.concurrentLru.GetOrAdd(uri, u => 1);
@@ -33,5 +42,14 @@ private static string FormatHits(double hitRate)
         { 
             return string.Format("{0:N2}%", hitRate * 100.0);
         }
+
+        public static void WriteToFile(string path, IEnumerable<Analysis> results)
+        {
+            using (var writer = new StreamWriter(path))
+            using (var csv = new CsvWriter(writer, CultureInfo.InvariantCulture))
+            {
+                csv.WriteRecords(results);
+            }
+        }
     }
 }
diff --git a/BitFaster.Caching.HitRateAnalysis/Wikibench/Runner.cs b/BitFaster.Caching.HitRateAnalysis/Wikibench/Runner.cs
index a52a0e04..cf831581 100644
--- a/BitFaster.Caching.HitRateAnalysis/Wikibench/Runner.cs
+++ b/BitFaster.Caching.HitRateAnalysis/Wikibench/Runner.cs
@@ -50,6 +50,8 @@ public static async Task Run()
             {
                 a.Compare();
             }
+
+            Analysis.WriteToFile("results.wikibench.csv", analysis);
         }
     }
 }

From 5a7de635e9b1aa39fad9a1d41c563f682278a82b Mon Sep 17 00:00:00 2001
From: Alex Peck <alexpeck@microsoft.com>
Date: Thu, 14 Jul 2022 11:52:45 -0700
Subject: [PATCH 2/3] add results

---
 BitFaster.Caching.HitRateAnalysis/results.wikibench.csv | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 BitFaster.Caching.HitRateAnalysis/results.wikibench.csv

diff --git a/BitFaster.Caching.HitRateAnalysis/results.wikibench.csv b/BitFaster.Caching.HitRateAnalysis/results.wikibench.csv
new file mode 100644
index 00000000..de435f1b
--- /dev/null
+++ b/BitFaster.Caching.HitRateAnalysis/results.wikibench.csv
@@ -0,0 +1,9 @@
+CacheSize,ConcurrentLruHitRate,ClassicLruHitRate
+25,0.3074854393579459,0.12339894258281078
+50,0.38541435017765774,0.21441939220308404
+75,0.4252123346830987,0.2784286871100062
+100,0.45102559165447403,0.32256096493638853
+125,0.4721936919103159,0.3530941454952625
+150,0.48687634020955906,0.37484624347754925
+175,0.49932971822611416,0.39100132865614856
+200,0.5083386468801666,0.4035904822418645

From 8534f8c06b913fcd799f30a3e8d6d821ed368fc8 Mon Sep 17 00:00:00 2001
From: Alex Peck <alexpeck@microsoft.com>
Date: Thu, 14 Jul 2022 12:41:30 -0700
Subject: [PATCH 3/3] fix percentage output

---
 .../Wikibench/Analysis.cs                        |  4 ++--
 .../results.wikibench.csv                        | 16 ++++++++--------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/BitFaster.Caching.HitRateAnalysis/Wikibench/Analysis.cs b/BitFaster.Caching.HitRateAnalysis/Wikibench/Analysis.cs
index 68c45ad1..417c774a 100644
--- a/BitFaster.Caching.HitRateAnalysis/Wikibench/Analysis.cs
+++ b/BitFaster.Caching.HitRateAnalysis/Wikibench/Analysis.cs
@@ -23,9 +23,9 @@ public Analysis(int cacheSize)
 
         public int CacheSize => this.concurrentLru.Capacity;
 
-        public double ConcurrentLruHitRate => this.concurrentLru.HitRatio;
+        public double ConcurrentLruHitRate => this.concurrentLru.HitRatio * 100;
 
-        public double ClassicLruHitRate => this.classicLru.HitRatio;
+        public double ClassicLruHitRate => this.classicLru.HitRatio * 100;
 
         public void TestUri(Uri uri)
         {
diff --git a/BitFaster.Caching.HitRateAnalysis/results.wikibench.csv b/BitFaster.Caching.HitRateAnalysis/results.wikibench.csv
index de435f1b..f8010efa 100644
--- a/BitFaster.Caching.HitRateAnalysis/results.wikibench.csv
+++ b/BitFaster.Caching.HitRateAnalysis/results.wikibench.csv
@@ -1,9 +1,9 @@
 CacheSize,ConcurrentLruHitRate,ClassicLruHitRate
-25,0.3074854393579459,0.12339894258281078
-50,0.38541435017765774,0.21441939220308404
-75,0.4252123346830987,0.2784286871100062
-100,0.45102559165447403,0.32256096493638853
-125,0.4721936919103159,0.3530941454952625
-150,0.48687634020955906,0.37484624347754925
-175,0.49932971822611416,0.39100132865614856
-200,0.5083386468801666,0.4035904822418645
+25,30.748543935794594,12.339894258281078
+50,38.54143501776577,21.441939220308402
+75,42.52123346830987,27.84286871100062
+100,45.1025591654474,32.25609649363885
+125,47.21936919103159,35.30941454952625
+150,48.687634020955905,37.484624347754924
+175,49.932971822611414,39.10013286561485
+200,50.83386468801666,40.35904822418645