Solved

(asp.net) un-managed code

Posted on 2008-06-10
8
188 Views
Last Modified: 2010-04-15
I'm working on a asp.net app that's eCommerece. I downloaded a dotnet profiler and ran the app.

The bottleneck shows at an ASHX page and there's a routine in there. It calls database stuff.

But my question is, howcome this is unmanaged code and is unmanaged code bad? ** the profler shows this functon as unmanaged**

This is the code below:


using System;
using System.Web;
using System.Web.UI;
 
using System.Diagnostics;
 
 
using DX.Catalog;
 
 
    public class CategoryUrl : IHttpHandler, System.Web.SessionState.IRequiresSessionState
    {
        public void ProcessRequest(HttpContext context)
        {
            
 
            string destinationPage = "~/ListProdcuts.aspx";
 
   
 
            if (string.IsNullOrEmpty(context.Request.QueryString["Tail"]))
            {
                Category category = Category.GetById(new Guid(context.Request.QueryString["CategoryId"]), true);
                string landingPage = "~/Categs/" + category.TreePath.Replace("/", ".") + ".aspx";
 
                if (System.IO.File.Exists(context.Server.MapPath(landingPage)))
                {
                    destinationPage = landingPage;
                }
            }
 
            context.RewritePath(destinationPage, context.Request.PathInfo, context.Request.Url.Query.TrimStart('?'), false);
 
            IHttpHandler page = PageParser.GetCompiledPageInstance(destinationPage, context.Server.MapPath(destinationPage), context);
            page.ProcessRequest(context);
        }
 
        public bool IsReuse
        {
            get
            {
                return true;
            }
        }
    }

Open in new window

0
Comment
Question by:Camillia
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
8 Comments
 
LVL 33

Expert Comment

by:raterus
ID: 21752724
Any .Net code you write is managed code, however, you can make calls to unmanaged code.  My guess is some of these methods which you haven't posted more detail on make calls to unmanaged methods, specifically the category object.

0
 
LVL 7

Author Comment

by:Camillia
ID: 21752830
ah, so I need to trace that category object? so this ASHX itself is managed but it calls other methods that are unmanaged...

unmanaged code is bad for performance?
0
 
LVL 33

Accepted Solution

by:
raterus earned 500 total points
ID: 21752876
Unmanaged code is not bad, it just doesn't run under the .Net CLR (aka. Virtual Machine).  Unmanaged code talks directly to the computers processor, while .Net (managed) code talks to the CLR, which talks to the computer's processor.  Technically, unmanaged code has the potential to run more efficiently than .Net code since there isn't this intermediate step :-)
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 7

Author Comment

by:Camillia
ID: 21752944
thanks...makes sense. I will need to look at this bottleneck. Have you used MyGeneration database wrapper...they use it a lot in this app..maybe that's an issue...but good to know I can rule some things out.
0
 
LVL 33

Expert Comment

by:raterus
ID: 21752973
Sorry, not familiar with that one :-)
0
 
LVL 7

Author Comment

by:Camillia
ID: 21753417
thanks for your help. Will leave this open for now and see if anyone has anything else to add.
0
 
LVL 7

Author Comment

by:Camillia
ID: 21754772
You're right , something's going on with that Category object.

Let me ask you this and then I will close question.

The profiler shows that that object consumes 212,206 byes of memory. Total byte allocated for this object is 244,392 bytes That's not good, is it? dont think it is ..
0
 
LVL 33

Expert Comment

by:raterus
ID: 21754925
Probably out of my expertise as far as a solid answer, but I do know a program can request a large amount of memory to be reserved for it's execution, memory it may never use.  This might help explain your memory discrepancy.

I really only remember reading this once when I looked up virtual memory, wondering why it's even needed these days.  Seems windows is smart and offloads this reserved memory to a hard-disk until it's actually used in the program.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…

707 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question