Greg,
Thank u for ur time and great answers. I will have to go through the
documents and articles thoroughly.
"Greg Ewing"
<[EMAIL PROTECTED] To: <[EMAIL PROTECTED]>
.com> cc:
Subject: re: [AspNetAnyQuestionIsOk] Big
Vs Small Classes Performance
05/19/2004
09:09 PM
Please respond
to
AspNetAnyQuest
ionIsOk
Mohan, great questions! Here are some pointers and articles I've found
useful.
The general answer about class size, static methods, public methods and
application performance is that none of this really matters for all but the
most intense applications. The second general rule of thumb is that if you
aren't sure that these things are causing your performance issue then start
looking somewhere else. For instance, if you are doing DB work and one
call to the DB takes 100ms while loading your class with 1,000 public
methods takes 5 ms vs 3ms(if you did it with fewer methods) you can see
that there isn't much to gain. While these numbers aren't necessarily real
#'s they are I think close to the level of scale you'll see. In general
class size, # of statics, and # of publics really isnt' going to noticeably
affect things.
If on the other hand you are just curious and want to better understand how
it all works then here are some articles to get you started. For some of
your questions there aren't a lot of great resources out there. At TechEd
2003 the CLR team (I think it was them) did a presentation with lots of
micro benchmarks. I don't have the pres here but you might be able to find
it out there, especially if you know someone who went last year.
Incredible .Net performance article from MS.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnpag/html/scalenet.asp
How-To on Microbenchmarking
http://www.yoda.arachsys.com/csharp/benchmark.html
Regarding your DAL, you could pass your data in a lighterweight strucutre
like an array or a RowCollection, or even a DataTable. Like above though
you probably won't see any real difference except in the most extreme
circumstances.
Greg Ewing [MVP]
www.citidc.com
Original Message:
>From: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: [AspNetAnyQuestionIsOk] Big Vs Small Classes Performance
>Date: Wed, 19 May 2004 17:25:38 +0800
>Hi All,
>
>1) Is this true:- More methods (i mean public) and variables in classes
>will make the application slower when instances are created?
>How to design methods in classes? How many methods can we normally have in
>classes for performance reasons? I read somewhere that classes must not be
>too big or too small.
>
>Can we find out how the classes are performing, faster or slower?
>
>What if I make the methods as static(C#) so that I don't create any
>instance of the Classes at all?
>(These methods can also be database access methods)
>
>2) I have Data Access Layer(DAL) classes and I am passing DataSet as
>arguments. What are the other ways of passing Rows of records to DAL, so
>that the processing will be faster?
>
>Can anybody help me to understand this?
>
>thanks in advance for the OOPS gurus!
>Mohan
>
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