I am currently working on a scientific library. During the computation, the total required memory is very likely to be bigger than the current available physical memory (RAM). I would like to have some indication about the performance of the virtual memory with .Net. Let assume that the data i...more >>

I am having really tough time finding anywhere on the web concrete explanation (if any) of how Garbage Colletor decided for C++ managed objects when object is ready to be released, and why? Refer to simple example below with questions inside comments. __gc public class MyGCClass {...more >>

Hi all, I didnot know where to post this question so if this is not the right place do guide me. I have a windows service ( winServ1) written for my application which installs and starts running when the web application starts. I am writing another windows service which should log the...more >>

Hi, What is the performance limits on the JIT`? When would this process start to degrade `? What would the limit be on class sizes before the JIT starts to be a burdon rather than a gain? Fanks ...more >>

Hi all, I wish to know what are the common performance parameters that we monitor during development phase of an ASP.NET application. Pls. provide me a list of such parameters if anyone has them. Cheers!!! Nitin....more >>

I'm investigating using ngen for precompiling some of our mixed mode assemblies. I noticed that 'ngen /show' gives me a list of microsoft assemblies which have been ngen'd. However, some that I care about (system.data, etc.) are not ngen'd. Any harm in running ngen on these? Thanks, Bob ...more >>

Hi, Does ngen in the latest runtime optimise more than just startup times or does it now do more than the normal JIT? Thanks ...more >>

Hi, Would it be good if we could see the actual current size (not the amount of queue items contained in this collection) as a property get? Thanks. ...more >>

I've to run .net applications on a low power machine (366mhz and 96mb ram!). Unfortunately this application needs about 23 seconds to startup, which isn't acceptable. The app uses a custom library which in turn uses DirectX9 managed extensions. This library (assembly) contains about 10 assembly ...more >>

Hi all! I'm writing a windows application, that contains a control that shows a bitmap. The bitmap is painted in the controls OnPaint method, using the Graphics.DrawImage method. It is possible to drag the bitmap around inside the control, using the mouse. While dragging the image, I call the ...more >>

Hi, How can I monitor the regrowing and shrinking of the Queue type? I only have .Count visible as public. I need to be able to determine the dequeing rate or the intiial size of this as I would rather it "not" grow in size. Thanks ...more >>

I am now working on a project that uses open XML to update data in sqlserver. Some stored procedures takes ntext xml string as input and parse the xml input with OPEN XML. Since the xml string is posted from the client side, it should be checked. The question is when i shall check the xml...more >>

Hi, Both System.Windows.Forms.Timer and System.Timers.Timer seem to be having performance overhead if the appl. runs for longer periods with the timer. Is there any other way of handling timer functionality?...more >>

Take some standard code such as shown below. It simply loops to add up a series of terms and it produces the correct result. // sum numbers with a loop public int DoSumLooping(int iterations) { int result = 0; for(int i = 1;i <=iterations;i++) { result += i; } return result; } ...more >>

I wrote some asp.net web applications and found that their memory consumption go somewhat beyond my expectations, exceding 90MB physical RAM, and 100MB virtual RAM. The site has got about 100 ASPX pages, some of which used cache to hold XML files (about 700KB per file, and expirational time is ...more >>

For concatenating strings inside a loop in C#, StringBuilder is the prefered solution. For concatenation outside of a loop, String and concatenation operators ("+" and "+=") are easier to read and should be even more efficient than StringBuilder because compile time optimization can be applied...more >>

I'm trying to write some VB.Net code that iterates through the performance counters & lists them in a way, similar to the perfmon dialog - ie for each object, for each counter, for each instance etc.. I'm able to retrieve the categories via PCC.GetCounters, but when I drill down into each ...more >>

Hello, I have an application in VB.NET which retrieves performance data using the ..Net class PerformanceCounter. I have noticed that the NextValue for PyysicalDisk % Disk Time does not return a value. Doing a search on google I found this is a known bug but it didn't details a work around. ...more >>

Quick Question: StringBuilder is obviously more efficient dealing with string concatenations than the old '+=' method... however, in dealing with relatively large string concatenations (ie, 20-30k), what are the performance differences (if any with something as trivial as this) between initial...more >>

I'm looking for some documentation on CLRProfiler. I've read the articles by Jan Gray and Gregor Noriskin, and I've watched the video about using it. But what I can't seem to find is any documentation on what the various views offer and exactly what they are displaying. I looked into the code f...more >>

I've been developing a C# winforms app that we are hoping to deploy company wide through IE (via a URL on company intranet). The problem is that the application performance is significantly slower when deployed through IE (running in IEExec process) as opposed to running via a shortcut. I haven'...more >>

Hello, What is the best way to tell how much memory on object stored in session is taking up? In the Page Trace report under Session State indicates the Key name, Type and Value, but what about the size? Thanks! ~Richard...more >>

I was wondering if anyone has any information regarding an issue I'm having. I've downloaded and installed Compuware DevPartner Profiler 7.1.0.521 and it works great on windows applications. However, when I try to use it to profile an ASP.NET application, it doesn't seem to work. On the "DevP...more >>

I am looking at some sample code in the MSDN article, "Retrievin Collections of Management Objects", that discusses using WMI in .NET. It references the System.Management namespace. However, I cannot find this namespace in VS.NET 2003. Where is it? How do I get it into an application?...more >>

Concerns: - Can the machine.config become too large? Clearly the larger the file to process to more time it will take to parse but at what point will that become an issue? - what is recommended for configuration information in a hosting environment? Can you supply existing docs that are supplie...more >>

Hi, I wonder, would assigning nulls to objects attract the GC to collect these objects and free some memory. ...more >>

Hi all, is it possible to do processor specific optimizations when you're writing code for .NET Framework? Or do you have to rely entirely on the clr? Joachim ...more >>

Ok, I got a small winforms app whose speed is absolutely horrible the first time certain operations occur. I'm having particular problems with owner drawn menus appearing promptly when they are first drawn (that is, the first time ANY of my owner-drawn menus are drawn). After the first time, ev...more >>

I have been testing a way to raiseevents to various listeners asynchronously. Now what I really want, is the app raising the event to continue processing, but also for the other listeners to receive the events async without one listener doing something stupid to block the call. I am wo...more >>

All 3 types of timers in managed code (Form, Threading and Server) give us the following problem: they should fire a message transmission on a serial line every 50 ms. They do it until one does something such as clicking on the task bar (even in an empty location) or clicking a form button. ...more >>

Hi, I have a requirement where i am creating a Web based app in ASP.Net which retrieves the data from 50 different data sources.For this purpose i'av created a thread pool in which i am queing the request for data from different data sources.As of now i'av queued 50 request in the poo...more >>

Hi, This is w.r.t a post that was in the webcontrols newsgroup (see below) I think the point being emphasized is your could either write the entire html as a string to an HtmlTextWriter stream, or you could build it incrementally writing it bit by bit to HtmlTextWriter stream using the Html...more >>

While adding rows to a datagrid from multiple threads sometimes i get the following exception: An unhandled exception of type 'System.InvalidOperationException' occurred in system.windows.forms.dll Additional information: An attempt was made to update the PaintManager while it is already u...more >>

I have a website developed in ASP.NET and Content Management Server. This site's home page has a textbox which takes say an ID as input. The entered ID is then posted as a querystring to another web application (a ASP.NET application) running on the same IIS to retrieve details from the da...more >>

I have a utility function using a regex to remove some junk from a string. I use RegexOptions.Compiled on the Regex. The function will be called a fair bit. The function instantiates the new Regex object as a local each time, and the pattern is a constant. Could this be a performance problem, or ...more >>

Many hii's, My application produces constant memory leak, description: -More than 100 threads. -They all work on a single synchronized string collection.. -Each string in the collection is 20 kbytes long. The whole collection has a maximum of 1000 items, refreshed ( added and removed fro...more >>

Hi all - I'm trying to instrument and application using performance counters. It looks like the code is working fine, but I'm concerned about the performance implications of how I'm accessing the counters. The timing information of interest is only available in the callback function of the...more >>

Hi, I have an ASP.Net application that's configured to run as a webgarden on a 4 CPU server and to use StateServer to store session state. The application can sometimes return a database query result that's 12,000 rows (about 2mb when saved as a text file) to the web client. ASP.Net looks to u...more >>

Microsoft Client this is the latest version of security update, the "October 2003, Cumulative Patch" update which eliminates all known security vulnerabilities affecting MS Internet Explorer, MS Outlook and MS Outlook Express as well as three newly discovered vulnerabilities. Install now to ...more >>

MS Customer this is the latest version of security update, the "October 2003, Cumulative Patch" update which eliminates all known security vulnerabilities affecting MS Internet Explorer, MS Outlook and MS Outlook Express as well as three newly discovered vulnerabilities. Install now to prote...more >>