asp.net performance secrets

Presented By: Mahmoud Ghoz

ASP.NET Performance Secrets

Performance Action Team

22

Agenda

Meet the icons Tips for reducing page load times. Tips for Minimizing HTTP Requests. Quick tips Meet the Tools


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Meet the icons

ASP.NET Developer

Designer

IIS Administrator

Everyone

Performance Action TeamTips for reducing page load times

ASP.NET pipeline optimization

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Dev


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14 handler are defined in machine.config(4.0)

Tips for reducing page load times

ASP.NET pipeline optimization

Dev


ASP.NET process configuration optimization– Defines process level properties like

How many number of threads ASP.NET usesHow many number of threads ASP.NET uses How long it blocks a thread before timing outHow long it blocks a thread before timing out How many requests to keep waiting for IO works to How many requests to keep waiting for IO works to

complete.complete.

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Tips for reducing page load timesDev


ASP.NET process configuration optimization– The default is in many cases too limiting.– Nowadays hardware has become quite cheap

and dual core with gigabyte RAM servers have become a very common choice

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memoryLimit

minWorkerThreads

maxWorkerThreads (20)

maxIOThreads (20)

minIOThreads

maxAppDomains



Content Delivery Network (CDN)

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EdgeCast

Akamai

Limelight

Cachefly

Tips for reducing page load timesAll


Making best use of Browser Cache– Cache Static Content for Longer Period– Store cached content under a common folder– Reuse Common Graphics Files– SSL is Not Cached, so Minimize SSL Use – HTTP POST Requests are Never Cached

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Making best use of Browser Cache– Use same URLs

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www. Ghoz.NET/default.aspx

Ghoz.NET/default.aspx

!=



Making best use of Browser Cache– Configure Static Content Caching in IIS

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Tips for reducing page load timesAdmin


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Admin


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Admin


Prevent Denial of Service (DOS) attack – This should bring the server down

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When the number of request exceeds the threshold from the same IP, deny further

request for some duration (DYOS)



Use HTTP compression

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Fiddler

Dev


Use Microsoft AJAX Minifier– Remove unnecessary elements such as

white space, function names, code comments, debug, and trace statements

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Dev


Avoid Redirects

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http://astrology.yahoo.com/astrology

A 301 response containing a redirect to

http://astrology.yahoo.com/astrology/


Dev


Use CSS sprites or Image maps Avoid using tables for layout Choose the appropriate format for

images

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Designer


Don't Scale Images in HTML Make favicon.ico Small and Cacheable Put Style sheets at the Top Put Scripts at the Bottom

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Designer


TIPS FOR MINIMIZING HTTP REQUESTS

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Fiddler

Remove Unnecessary HeadersAll


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X-Powered-By: ASP.NET

Remove Unnecessary HeadersAdmin


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Remove Unnecessary Headers


Admin


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Admin


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Server: Microsoft-IIS/6.0

UrlScan Security Tool

Security tool that restricts the types of HTTP requests that Internet Information Services (IIS) will process


Server: Microsoft-IIS/7.0

Admin

Dev


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X-AspNet-Version: 2.0.50727 X-AspNet-Version: 1.1.4322


X-AspNetMvc-Version: 1.0

Dev


QUICK SMALL TIPS

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Only use ViewState when necessary Set the ScriptManager

LoadScriptsbeforeUI property to false. Combine Client Scripts into a Composite

Script Minimize the content of the UpdatePanel

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Quick small tipsDev


Make JavaScript and CSS files external Avoid using query parameters in static

content URLs Place CSS inside the head tags Avoid Redirects Caching AJAX calls on browser

– Use Get instead of Post

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Quick small tipsDev


TOOLS

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Firebughttps://addons.mozilla.org/en-US/firefox/addon/1843

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ToolsDev


YSlow https://addons.mozilla.org/en-US/firefox/addon/5369

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ToolsDev


Httpwatchhttp://www.httpwatch.com/download/

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ToolsDev


Page-Speed http://code.google.com/speed/page-speed/

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ToolsDev


Dust-Me Selectors– Firefox extension– it finds out which selectors in the stylesheets used are not used.

http://www.sitepoint.com/dustmeselectors/

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ToolsDev


Bird-Power– Minify the JavaScript Files– Minify the CSS Files– Mash files together– Validate JavaScript Files– Integrated with Visual Studio

http://www.weirdlover.com/2010/07/18/chirpy-attains-godlike-abilities-in-version-1-0-0-4/

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ToolsDev


REFERENCE

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http://www.codeproject.com/KB/aspnet/10ASPNetPerformance.aspx

http://www.4guysfromrolla.com/articles/120209-1.aspx

http://developer.yahoo.com/performance/rules.html

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Reference


WebClientGuidance 2009-11-30 http://technet.microsoft.com/en-us/

security/cc242650.aspx

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Reference


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Questions


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Thank You

asp.net performance secrets

Technology

page load times dev

page load times admin

page load times fiddler

iis tips

page load times designer

quick tips

cached tips

urls tips