[Mono-dev] ASP.NET 2.0 performance discussion.

[Marek Habersack]

On Wed, 22 Nov 2006 16:49:49 -0500, Miguel de Icaza <miguel at ximian.com>
scribbled:

[snip]
>     All of the above is considering that the User Agent for
> ApacheBench is not registered.   After we register UserAgent into the
> browscap.ini file, we go from 182 requests per second to 332, this is
> by adding the ApacheBench to the top.
> 
>     So we could improve things in a few ways:
> 
> 	* We should remove the current text-based browser capabilities
> 	  from the system, and instead use some sort of binary format
> 	  that optimizes the lookup for common browser.
> 
> 	  We could also avoid using System.RegularExpressions as
> 	  the browscaps ini just has DOS-like expressions, and we 
> 	  could use a lighter edition of this code.
ASP.NET 2 uses XML-based Browser database stored by MS.NET in a
subdirectory of its CONFIG folder, browser.ini being deprecated. Also,
the user can put .browser files (utilizing the same XML format) in
~/App_Browsers and they get compiled whenever the application is
loaded. I plan to work on support for the App_Browsers and the XML
definition files in the near future. Since the definition files are
loaded once during the application startup and whenever a change to any
of the definition files is detected the app is reloaded, we can cache
the database in HttpApplicationFactory.InitType at the cost of using
some more memory. We could keep them in a (generic) SortedList and
populate in such a way where we would not use any wildcard/regex
matches, just full string match. That would probably increase the
performance dramatically.

best regards,

marek
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