Re: Design Advice to avoid Gen 2 collections

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From: Jon Skeet [C# MVP] (skeet_at_pobox.com)
Date: 05/01/04

  • Next message: Tyson Brown: "Re: Design Advice to avoid Gen 2 collections" 
    Date: Sat, 1 May 2004 07:10:38 +0100

    Tyson Brown <tyson.brown.REM0VE@sbcglobal.net> wrote:
    > > Yes - although obviously it'll depend on how many requests you get at
    > > the same time.
    >
    > I am planning on a load of 1,000+ users per machine, with 100-200
    > concurrent requests at any given time. While not huge load, these
    > servers have only moderate horsepower, so I am wanting to make this
    > as lean as possible.

    That's a pretty large load - but how long is each request going to
    take? 100-200 *concurrent* requests is quite a lot, IME, even for 1000
    concurrent users (if you see what I mean). Does each request take a
    long time to process?
         
    > > Not entirely, no - step 3 puts the value type on the heap, assuming
    > > that "assigning that struct variable to a class" means assigning the
    > > value of an instance or class variable in a class to be the same as the
    > > local variable.
    >
    > So to clarify, here is a little code sample:
    > index.aspx
    > Sub page_load
    > Dim myMember as MemberValueType
    > myMember.PopulateData(MemberId)
    >
    > Dim myControl as MyUserControl = Page.LoadControl("myControl.ascx")
    > myControl.CurrentMember = myMember <--- this is the line in question
    > Page.Controls.Add(myControl)
    > myControl = nothing
    > myMember = nothing
    > end sub
    >
    > Class MyUserControl
    > Inherits System.Web.UI.UserControl
    >
    > Public CurrentMember as MemberTypeValue
    > End Class
    >
    > In the above scenario, would the MemberValueType be added to the heap or not?

    Yes - because all the data for myControl is on the heap, including
    myControl.CurrentMember. 

    -- 
Jon Skeet - <skeet@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
  • Next message: Tyson Brown: "Re: Design Advice to avoid Gen 2 collections"

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