![What’s Faster? DataReader Column Reference By Name: Response.Write(dr[“ProductName”]); By Ordinal: Response.Write(dr[0]); By GetString(): Response.Write(dr.GetString(0));](https://image.slidesharecdn.com/dev411-1223972784695627-9/85/Dev411-28-320.jpg)
![What’s Faster? Proper Case dr[“ProductName”] Improper Case dr[“PRODUCTNAME”]](https://image.slidesharecdn.com/dev411-1223972784695627-9/85/Dev411-31-320.jpg)
![What’s Faster? How to improve template performance? DataBinder.Eval <%# DataBinder.Eval(Container.DataItem, “ProductName”) %> Explicit Cast <%# ((DbDataRecord)Container.DataItem)["ProductName"]%> ItemDataBound void ItemDataBound(Object s, DataGridItemEventArgs e) DisplayItemDataBound.aspx](https://image.slidesharecdn.com/dev411-1223972784695627-9/85/Dev411-43-320.jpg)
Dev411
- 1. DEV411 ASP.NET: Best Practices For Performance Stephen Walther www.SuperexpertTraining.com
- 2. Purpose of Talk What is the fastest method of displaying a set of database records in an ASP.NET Page?
- 3. Testing Tools Trace Tools Profiler Tools Load Tools
- 4. Trace Tools ASP.NET Page or Application Tracing Display trace information on page System.Diagnostics Tracing Write trace information to custom listener
- 5. Trace Tools
- 6. Profiler Tools CLR Profiler Free Profiler from Microsoft ANTS Profiler Available at www.Red-Gate.com SQL Profiler Included with Microsoft SQL Server
- 8. Load Tools Application Center Test Included with Visual Studio .NET Enterprise Web Application Stress Tool (WAST) Free download from Microsoft site ANTS Load Available at www.Red-Gate.com. Includes calculated Frustration Coefficient
- 9. Test Setup Application Center Test (ACT) .NET Framework 1.1 SQL Server 2000 Windows Server 2003 (Standard)
- 10. Performance Statistics Requests Per Second (RPS) Time To Last Byte (TTLB) Page Execution Time
- 11. Timer Module The Timer Module records the time interval between PreRequestHandlerExecute Event PostRequestHandlerExecute Event
- 12. Timer Module PostRequestEventHandlerExecute EndRequest Load Init Unload TimerModule.cs PreRequestEventHandlerExecute BeginRequest Application Events Page Events
- 13. Clock Resolution QueryPerformanceCounter is accurate to 1/3579545 of a second or about a millionth of a second
- 14. The Test Request page 1050 times Discard first 50 requests Log time of each request Average results
- 15. Database Setup Four Database Tables Products10 – 10 Rows Products50 – 50 Rows Products100 – 100 Rows Products500 – 500 Rows
- 16. What’s Faster? DataReader DataSet DisplayDataReader.aspx DisplayDataSet.aspx
- 17. DataReader
- 18. DataSet
- 20. DataReader Versus DataSet Final Results On average, a DataReader is 16% faster than DataSet
- 21. 3rd Option – ArrayList Using an ArrayList instead of a DataReader results in similar performance with the advantages of a static representation of data DisplayArrayList.aspx
- 22. ArrayList
- 23. What’s Faster? SqlDataReader OleDbDataReader
- 24. OleDbDataReader
- 25. OleDbDataReader Final Results On average, a SqlDataReader is 115% faster than an OleDbDataReader
- 26. What’s Faster? Inline SQL Stored Procedure
- 27. Stored Procedure
- 28. What’s Faster? DataReader Column Reference By Name: Response.Write(dr[“ProductName”]); By Ordinal: Response.Write(dr[0]); By GetString(): Response.Write(dr.GetString(0));
- 29. Column Reference
- 30. Column Reference Final Results On average, ordinal reference is 11% faster than by name
- 31. What’s Faster? Proper Case dr[“ProductName”] Improper Case dr[“PRODUCTNAME”]
- 32. Proper Case
- 33. Proper Case Final Results Using proper column case is 1% faster than improper column case
- 34. What’s Faster? Inline ASP.NET Controls
- 35. DataGrid
- 36. DataGrid Final Results Inline script is 233% faster than a DataGrid
- 37. What’s Faster? DataGrid with ViewState Disabled DataGrid with ViewState Enabled
- 38. ViewState
- 39. ViewState Final Results DataGrid with ViewState disabled is 66% faster than DataGrid with ViewState enabled
- 40. What’s Faster? AutoGenerateColumns Template Columns
- 41. Template Columns
- 42. Template Columns Final Results A DataGrid without templates is 39% faster than a DataGrid with templates
- 43. What’s Faster? How to improve template performance? DataBinder.Eval <%# DataBinder.Eval(Container.DataItem, “ProductName”) %> Explicit Cast <%# ((DbDataRecord)Container.DataItem)["ProductName"]%> ItemDataBound void ItemDataBound(Object s, DataGridItemEventArgs e) DisplayItemDataBound.aspx
- 45. Template Performance Final Results Explicit cast is 11% faster than using a databinding expression
- 46. Creating A Custom Control Would a custom DataGrid (with severely reduced functionality) be faster than the standard DataGrid? FastGrid.cs
- 47. Custom Control
- 48. Custom Control Final Results FastGrid is 37% faster than a standard DataGrid
- 49. What’s Faster? DataGrid with no caching DataGrid with data caching DataGrid with output caching
- 50. Data Caching
- 51. Data Cache Final Results Using the data cache is 637% faster than a standard DataGrid
- 52. Output Cache
- 53. Output Cache Final Results Using the output cache is infinitely faster than using a standard DataGrid
- 54. Conclusions A DataReader is faster than a DataSet An inline DataReader is faster than a DataGrid You pay a high price for ViewState AutoGenerateColumns is faster than template columns Caching is always a good idea!
- 55. Performance Resources Microsoft Sites Performance http://msdn.microsoft.com/netframework/using/understanding/perf/default.aspx Books Improving .NET Application Performance and Scalability http://msdn.microsoft.com/library/en-us/dnpag/html/scalenet.asp Software Web Application Stress Tool http://www.microsoft.com/technet/itsolutions/intranet/downloads/webstres.mspx CLR Profiler http://www.microsoft.com/downloads/details.aspx?FamilyID=86ce6052-d7f4-4aeb-9b7a-94635beebdda&displaylang=en ANTS Profiler and ANTS Load http://www.Red-Gate.com
- 56. Q1: Overall satisfaction with the session Q2: Usefulness of the information Q3: Presenter’s knowledge of the subject Q4: Presenter’s presentation skills Q5: Effectiveness of the presentation Please fill out a session evaluation on CommNet