Hello, I've read a lot about IoCompletionPorts in the "Inside Windows 2000" Books. But that all refers to Win32Api. In the .NET world I have only found one article on MSDN which has roughly one sentence about IoCompletionPorts. It states, that IoCompletionPorts are supported in the managed ...more >>

I have been having problems with RAM usage when finding LDAP nodes. In a lot of cases my code does a search that fails to find any nodes. Looking at the FindOne() code in "Reflector", I see that Dispose() is only called on the SearchResultCollection, if a node is found. Can someone in the ADSI...more >>

Hi, Can clr hosting improve startup time? For now we simply start the managed exe from within an unmanaged controller application. If we load the clr before starting an app will it boost the startup performance? Thanks in advance, Claus ...more >>

All What is the difference between Requests/Sec counter under ASP.NET Applications and Concurrent Requests under ASP.NET? More importantly, which one should I pay more attention to I am trying to performance test some new application framework changes, but the Requests/Sec are low considering t...more >>

Hi, I am working on a asp.net (C# 2003) solution which contains 4 projects. IIS and SQL Server are both on the same development machine and I am not using any remote debugging. But since yesterday rebuilding solution started taking 2 minutes instead of 5 seconds! OS is Windows XP pro wi...more >>

Hello I have created a webservice deployed on a Windows 2003 server machine Sql Server 2000 is also on the machine I have tested with a given number of inserts into the database using the SqlConnection and related objects I have also tested doing the same inserts with a legacy dll (delphi using ...more >>

This is a design / inheritance qus. I have class Task. This is a base class for some specific tasks Say WorkOrderTask : Task TimeSheetTask : Task Now Task has a function GetDetails() which gets all info about task. This makes a database call. I override this in the derived class. For...more >>

Hi, I ngen'd an assembly, but I observed that the native image gets invalid if the system time of the machine is not correct (e.g. the bios battery is empty). I didn't find any indication on the msdn site that time is an issue for an native image to get invalid. Has anybody more information on...more >>

I'm trying to determine if our application has a memory problem. We have had a situation where a production server wasn't configured properly (.NET Framework 1.0 Service Pack 2 wasn't installed and there was 512MB physical RAM on the server). The customer noticed that the application seemed...more >>

Hi, I'm writing vb.net form to access data from database. When I load this form each time, it increases memory usage. I have already dispose objects when the form is unload. However, it cannot clear all used memory. Finally, the program is crash. Here is my code. How can I solve it? Thanks tmp_cls...more >>

Hi all, I want to get the list of active/running processes on some remote machines in the same LAN my application run. I always get a System.InvalidOperationExpection exception with the message of "Couldn't get process information from remote machine". I run my application under the adminis...more >>

Hello All, Myself and some other architects are debating a performance / scalability issue regarding high- availability & load sites and we thought we'd ask the experts: Is it more performant to: 1. Store user data, activity, state, profiles in the Session space and capture this to...more >>

I was going to post this as a response to an answer for another one of my questions on "" vs string.Empty, but figured it would be fine as its own thread. I have been getting more familiar with looking at the IL dump of my DLLs to analyze how different code options work. It started with the recomm...more >>

Good day. Can anyone recommend some good tools for Web Application Testing? I am using Visual Studio .Net 2003 and has written a web application for an online ticketing system. I wish to utilize some testing tools to test the following: - System performance and Transaction time. - Benchm...more >>

We appear to have identified a memory leak in the .NET Framework using a service running on Windows 2000 platforms Using the .NET Development Environment we have created a standard C# Windows Service and added a FileSystemWatcher and a Timer object. When the timer fires (every 30-seconds), the Fil...more >>

Hi NG! I've a question about precompiling my Windowsapp. When should I use ngen for optimizing performance? If I have 6 dll's which are referenced by my Application, do I have to use ngen over them? How much faster will my application be afterwards? Thanks Stefan ...more >>

Hi All, Just a quick question to clarify my understanding of heap allocations: If I have an application that never allocates a managed object (via the new keyword) that is greater than 85k bytes in size, then that application should never have a large object heap size greater than zero? (say ...more >>

as a proof of concept, am trying create a web app w/ an XML file as a temp DB What is the fastest way to do serialization/deserialization? or maybe the better question would be how to efficiently retrieve/save data to an xml file. have tried deserializing from XML file but having a hard t...more >>

I'm building a form by adding and positioning controls programmatically, rather than using the form editor. The problem is that there is a perceptible delay when executing Form.Show(). I've checked using ANTS profiler, and the delay seems to be in System.Windows.Forms.Control.get_Handle() - ...more >>

Hi I'm interested in finding a tool that lets me view the network usage of individual applications (and possibly even sub-processes). I'd also like to log this data. Features might include: - Bytes sent/received over a given network interface - Logging ability - Subprocesses that are t...more >>

In our application I need to detemine if there is a internet connection valid. So I build a windows service which every minute creates telnet connection against some host and port. If I do connect to this host I know that internet connection is OK. The problem: after few days CPU usage growing ...more >>

I can't seem to get an answer on this. I'm using asynchronous IO with BeginSend and BeginRecieve calls on a socket. But when I stress test the server, only one thread is processing every thing! I've verified this use a process explorer that show thread activity and only one thread is ac...more >>

Hi, I noticed a very weird behavor with the collection class. With exactly the same code, filling a collection takes usually around 4 seconds, but sometimes, it takes 60s ! for absolutely no apparent reasons. I've tried this on a bunch of computers, everytime, I notice the same inconsiste...more >>

Hi, I've been getting some poor performance out of an asynchronous IO socket server, so I put up a form that polls the available worker threads in the thread pool and it never seems to leave 25. I'm polling 2 times a second. Am I doing something wrong? I'm using System.Threading.ThreadPo...more >>

How does the DataView.Sort method really work under the covers? I know that it sorts a dataview, but what kind of sorting algorhythm is actually used? Thanks. ...more >>

Hi, I'm writing a server that is using asynchronous IO. I need this server to be scalable and fast. But how do I implement the send and recieve buffers in an efficient way? If I just allocate the memory on the fly, there's no way to explicitly free it up, so all of these large buffers...more >>

The following are results from running a test on an application= we wrote=2E Our application loads many DLLs into memory (about= 15)=2E Before we load the DLLs everything runs fine, but after= loading them the overall speed of the application dives=2E Is= this because of VM, if so, can I ...more >>

Hi, I have a Client-Server Application which uses .NET Remoting. The Server side objects are hosted in COM+ as a Server Application on Windows 2003 Server[COM+ 1.5]. After running the application for about 1 1/2 to 2 days, I notice that the DLLHOST is taking about 1 GB and the Server crashes ...more >>