ASP.NET performance

1
ASP.NET performance
By Yaniv Sharon
Forum .NET 5th Meeting ? March 2006
2
Agenda

• What is Performance tuning
• Problem description
• Viewstate
• Mass data handling
• ASP.NET controls
• Excel exports
• Zipping content
• Compressed output

3
What is Performance tuning?
Monitoring and analyzing the net performance of a
system and adjusting its configuration to obtain
optimum performance.
4
What is Performance tuning?

• In computing, optimization is the process of
  modifying a system to improve its efficiency. The
  system can be a single computer program, a
  collection of computers or even an entire network
  such as the Internet.
• http//en.wikipedia.org/wiki/Performance_tuning

5
Problem description

• Slow access of FE BO users
• Physical line limitations (BO)
• Multi posting of forms (BO FE)

6
200ms
500ms
100ms

• Get 200ms
• Process 100ms
• Result 500ms
• Total 800ms

7
1500ms
1500ms
1500ms
500ms
3000ms

• Get 4500ms
• Process 3000ms
• Result 500ms
• Total 8000ms

8
ASP.NET controls

• Control names
• Single object controls
• Multi-objects controls (tables etc)

9
Viewstate

• The Viewstate input
• Minimize Viewstate usage
• Using server-side solutions
• Re-generating the data
• Session object (higher server utilization, less
  network traffic)

10

Content compression

• Using asp.net httpModules, to add compression to
  generated html
• Web config
• lthttpModulesgt
• ltadd name"CompressionModule"
  type"blowery.Web.HttpCompress.HttpModule,
  blowery.web.HttpCompress"/gt
• lt/httpModulesgt
• Supported by IE5.5

11
Compressed output

• IIS supports compress output
• IE 5.5(?) and higher
• Not fully supported in all browsers
• Good for BO
• Images
• Saves 30-40 of traffic

12
Excel exports

• Most exports are done with exporter objects.
• Pros
• Styled output
• Cons
• Slow processing
• High Cpu utilization (server side)
• Limited line numbers (5K)

13
Excel exports

• Export using the response object
• Pros
• Faster
• Line number limit is 64K
• Minimum cpu usage (server side)
• Cons
• No styling

14
Zipping content!

• Determine what content can be zipped (excel
  exports)
• Use zip component to zip the output
• Save 90 of network traffic
• Save 90 of download time

15
Questions?
16
Thank You