[Mono-bugs] [Bug 77792][Maj] New - Poor performace of Int32.ToString () and other primite types

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Changed by marek.safar at seznam.cz.

http://bugzilla.ximian.com/show_bug.cgi?id=77792

--- shadow/77792	2006-03-15 14:25:01.000000000 -0500
+++ shadow/77792.tmp.23351	2006-03-15 14:25:01.000000000 -0500
@@ -0,0 +1,73 @@
+Bug#: 77792
+Product: Mono: Class Libraries
+Version: 1.1
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Major
+Component: CORLIB
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: marek.safar at seznam.cz               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Poor performace of Int32.ToString () and other primite types
+
+Please fill in this template when reporting a bug, unless you know what you
+are doing.
+Description of Problem:
+
+It looks like all primite ToString operation are too slow in compare to
+Microsoft implementation.
+Because this part is used heavily, I am raising this as the major issue.
+
+
+Steps to reproduce the problem:
+1. 
+
+using System;
+using System.Collections;
+
+class C
+{
+		static DateTime startTime;
+		static DateTime stopTime;
+		static TimeSpan elapsedTime;
+			
+		public static void Main ()
+		{
+			long elapsedMilliseconds;
+			startTime = DateTime.Now;
+			const int n = 1000000;
+
+			for(int i=1; i<=n; i++) 
+			{
+				string s = i.ToString("x");
+			}
+			
+			stopTime = DateTime.Now;
+			elapsedTime = stopTime.Subtract(startTime);
+			elapsedMilliseconds = (int)elapsedTime.TotalMilliseconds;
+				
+			Console.WriteLine("Elapsed time: " + elapsedMilliseconds + " ms");
+		}
+} 
+
+Actual Results:
+
+Mono Runtime: Elapsed time: 3405 ms
+
+7 times slower.
+
+Expected Results:
+
+Microsoft .NET runtime: Elapsed time: 490 ms
+
+
+How often does this happen? 
+
+
+Additional Information: