Hi, on my way to implement a data structure with csharp I have noticed that classes and arrays in dotnet consume very much memory. - An instance of an empty class without any properties consumes 24 bytes - An empty array consumes 16 bytes (*[] = new *[0]) - An instance of ArrayList (constr...more >>

Hi, As some of you probably know, methods using value type parameters are _never_ inlined by the .NET framework. This leads to very low performance in many performance critical areas such as 2D and 3D graphics. I filed a suggestion in august 2004. <http://lab.msdn.microsoft.com/productfeed...more >>

If anyone can help that will be much appreciated. I have implemented async socket server & client, functionally both work well, when connected through loopback, performance is reasonably good. The issue comes when i run the software over the network while functionally it remains stable, per...more >>

I have a process which is running a remoting object. This object reads messages from a MSMQ queue. Each message is a dataset and it is stored in a Oracle10 Database. (Messages in the queue are stored as strings) After start, the process uses 30-40MB of memory (in the taskmanager). Two or thre...more >>

What is quicker? If (Regex.IsMatch(tmpStr, "(s(ain|c)?t)", RegexOptions.IgnoreCase) Then or If ((tmpStr.CompareTo("saint") = 0) _ OrElse (tmpStr.CompareTo("sct") = 0) _ OrElse (tmpStr.CompareTo("st") = 0)) then I know that Regex is quicker to write, easier to read, but performa...more >>

I need to be able to move large media files avi, wmv over the internet from a server to client machines. The files sizes I am looking at is ~300mbtes raw and ~200mbtes compressed. If steaming is not an option for security reasons, what is best technology for moving these large files over the...more >>

Hello, Reading msdn.com and several blogs (also on msdn :)) it appears that simple properties that just get/set a private member are good candidates for inlining by the JITter. Does anyone know if inlining occurs across modules? Say I have module A with a class with a simple property an...more >>

Wasn't totally sure if this was the right newsgroup to post to, so if there's a better place, please let me know. Windows Server 2003 (multiprocessor) seems to have a curious implementation of System.Threading.Timers. The abnormal behavior became obvious when we upgraded from Windows Server...more >>

We are seeing odd behavoir in memory usage with .NET Framework 1.1. On startup the memory used as reported by TaskManger climbs to over 90mb. If you minimize the App the memory drops drastically then upon Restore it comes back to a more reasonable level (about 20mb) but starts to climb with us...more >>

I am developing an application that gets a brust of about 1000 or more packets at same time from different IP addresses. I have to process each packet and performance is essential. I am using UDPClient to recieve packets and then using a Delegate function to pass the bytes recieved for pro...more >>

Hello all We are developing a large dotnet application, which includes ~ 120 assemblies. (total size of all binaries is ~ 20MB). Our application also references the following dotnet assemblies: System,System.XML, System.Windows.Forms, System.Drawing, System.Data, System.Design. We use dotne...more >>

I have a tool that generates VB.NET code, compiles it into a DLL in memory and then executes a method on the class. I can execute the method on the class thousands of times per second. The generated code is slightly different each time the tool is run, so I must compile it each time. Th...more >>

I am trying to track a suspected memory leak in an application I'm writing and through repeated simplification of my project, I have found the following which is quite easily replicated should you be prepared to give me 5 minutes of your time... Create a new C# (Probably the same in VB...more >>

I have read that Exception Handling is expensive performance wise ( other than Throw ) , but exactly how ? Please consider the following example ... ////////////////// Code Block 1 ////////////////////////////////// Try { for ( ... ){// Code that might throw exception} }catch(...){} ...more >>

Hi, Which is better in terms of performance. Iterating over Enumerator ForNext loop (using indexer) ForEach loop Thanx rawCoder ...more >>

Hi all, I need to use high resolution timer. I' ve found that QueryPerformanceCounter from Kernel32.dll coudl be used for this purpose. My question is what is this counter for? I know only that it is zero when starting windows... What does it mean one step for this counter? Thanks Petr ?...more >>

Hi, I have a C# application which uses WMI to retrieve the ExecutablePath for each running process on a specific computer (might be local or remote). The problem is that some ExecutablePaths for some running processes (excluding the System and Idle processes which do not have any Ex...more >>

Can anyone shed some light on why a web server running ASP.NET with 1GB of memory works fine, but when I increase the memory to 2GB I constantly get "Out-of-Memory" errors? I'm stumped. Regards, Steve ...more >>

Can any one help me in freezing the column and the header in a datagrid? -- Message posted via http://www.dotnetmonster.com...more >>

We think we have discovered a bug in .NET. When we create a .NET windows service it take > 90 seconds at boot time to startup the service, even when the service does nothing. After alot of investigation and research we have discovered that if we make our service depend on a number of other ...more >>

hey, i've an app which readz messages from msmq and writes them into= sql server via multiple threads (not via thread pool)=2E msmq= messages get empty in time=2E it takes 100-150msec to complete the= batches to sql server (each batch invokes 5-6 stored procedures= on the database)=2E=2E ...more >>

Hi, I have native C++ code, which calls managed code 10,000 times second. I'm using --- in .H file: ---- #include <vcclr.h> .... gcroot<ManagedTick __gc*> managedTick; .... --- in .CPP file: ---- ManagedTick* managedTick = GetTick(...); managedTick->onTick(); which go to vcclr.h ...more >>

I keep trying to play Alexander The Game, but a text bar pops up saying Cossacks2 has caused an Assertion Error Message: Display mode 1280x1024 is not supported What Should I do? From: Steven Brown ----------------------- Posted by a user from .NET 247 (http://www.dotnet247.com/) ...more >>

Hi all, Has anyone used OpenSTA in order to perform Load/Perfromance testing (or capacity planning) on their applications? I would like some general feedback as to what type of testing you have performed, how highly you rate OpenSTA, and what problems if any you encountered. Our web applic...more >>

Hi! I have server that performs two types of operations. First type should be described as long time processing operations that takes a lot of CPU time. Second type should be described as short time processing operations that need to be done quickly. When first type operation is running, proc...more >>

Hi, in a class library I'm developing, I have the option to make a very central, service-providing-type class compatible with certain remoting scenarios that users of that class library might wish to implement by having the class inherit from MarshalByRefObj. Certainly a marginal, rather...more >>

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I've been trying to write a fast multi-dimensional array class in C# for a project I am working on. Basically it uses unsafe code and a single-dimensional array on the unmanaged heap to simulate a multidimensional array with no bounds checking or similar. The problem with it is when I tr...more >>