Hi! I've been looking for the solution for this problem for a while now. I hope that someone out there knows a more efficient way to do this. In short, I have a Dataset with n amount of records. I need to go 1 row at a time comparing values in some of its columns against similar columns in ...more >>

To compare two bytearrays I wrote the following code. Please note that I've allready found another way to solve this, so I don't need new code. I'm just wondering why this code is so incredibly slow: private void button1_Click(object sender, EventArgs e) { byte[] b1 = ne...more >>

Hi, I have a problem with a windows 2000 server running version 1.1 of the .Net framework. The symptom is that memory usage by the aspnet_wp process gradually increases until the web application I'm running becomes unresponsive. The server has 4GB of RAM and the application becomes unres...more >>

Does anyone know if and when the following line of code will be inlined? If it will be inlined can someone tell me how I can predict it for myself? XmlTextWriter writer = new XmlTextWriter(new MemoryStream(), Encoding.UTF8); Thanks alot. -- Rodney ...more >>

I have a shared/static method that access an object from the AppDomain. = If the object is not cached, the method creates an object reference and = caches the reference into the Appdomain. Multiple threads will use this = method. I would like to make the method thread-safe by sychronizing = spec...more >>

Hi! I have a simple thread Thread myThread=new Thread(new ThreadStart(foo)); ...... void foo() { while (!bQuit) { //Do something } } However this thread run the 100% CPU if I do like that void foo() { while (!bQuit) { Thread.Sleep(1); //Do something...more >>

Hi: I declare a dataset obejct as static type in one class, such as: class A{ private static dataset ds; public void process(){ // some code } } I want to know if the ds object can be disposed by handly. what does JIT do when it compile this class ?...more >>

Hi! Since DirectX are implemented only in mobile 5.0 and I must develop for 2003, I started to create a 3d engine on my own, but I get stuck immediatly for performance problems. I created dif function that draw a line using a Bresenham algorithm on a Bitmap private void DrawLine(Bitma...more >>

I am looking for tools to profile an application while running. There seems to be a resource problem and I am not sure if it is the application (Windows Forms .Net written in C#) or the database server (Informix)....more >>

I'm trying to determine what is the best technique to execute asynchronous httpwebrequests. Two methods I see are using the BeginGetResponse at (http://samples.gotdotnet.com/quickstart/util/srcview.aspx?path=/quickstart/howto/samples/net/ASPXNet/webrequestasync.src&file=CS\webrequestasync.asp...more >>

Hi, I have a .Net DLL that has a method - CallDLL() I want to monitor the time taken for each call made to this DLL. Hence I have added an averagetime32 and its base in the CallDLLs first(first) and last lines(endtime). But the perfmon does not show any increase in the graph? I might also...more >>

I am using this method with the FileIO.SearchOption.SearchAllSubDirectories option to get a collection of directories that I can then iterate over and check ACLs for unknown sids. The problem is that this method takes extreamly long, particularly on a large directory structure over the networ...more >>

Hi all, Ok, first I am new to dotNET so bear with me, I am creating a remotin host, client app which would potentially get alot of traffic, say 200 hits a second, the host is seraching SQL and building an XML REPLY. It looks like the db is the bottle neck here, is there any way to spee u...more >>

We just upgraded from a 16-bit windows version of our mission-critical DB app to a new version built on .NET 1.1. We replaced all servers and workstations with powerful new hardware and upgraded our network to a gigabit infrastructure. Now, instead of the client software connecting directly...more >>

We just profiled our application and noticed that SafeNativeMethods.GdipFillRectangleI method (called by Graphics.FillRectangle) in System.Drawing causes 88% of all of our -soft- page faults. We are soft faulting on an order of 2000 spfs/sec with 10 charts - with one charts we are to 600 SPFs/...more >>

I have the appended code in my .NET service application. I basically want the performance monitors to automatically be created on the first use of this service, and if it is upgraded the new counters will be added. It works fine on the first execution. On the second execution, it succes...more >>

hi, i have a problem: i wrote a class that encapsulates communication with database. i wont go into details, but i wanted to use threads to avoid unresponsive ui so i did something more or less like this: public void ExecuteScalar(string query) { this.query = query; this.workingThread.R...more >>

I know for a fact that declaring vars inside a for loop is valid. Reason for doing this: 1. Ensures the variables are scoped out outside the block 2. Ensures vars are scoped out after each iteration Question is ... 1. Are there any known Performance/Memory issues? 2. How will garbage...more >>

Hi! I need help with identifying a new way to process report data that currently is too slow to meet our production goals. In short, we have data in Oracle database where we need to process it in batches/waves that are identified by a sertain group of columns. Once we identify that batch, ...more >>

Hi there, What tool should I use that measures performance of my application? What tools are available and popular for .NET applications? Kind regards, -- Tom Tempelaere....more >>

Hi there (sorry for the cross-post), I have a problem that I am not sure quite how to resolve. I have a series of datasets, with grids being bound to any one of the datasets. These datasets can get updated quite frequently (upwards of 10-20x per second, sometimes just once a second), with e...more >>

This may not be the best place for this but its a performance issue of a particular thread I'm concerned about and I didn't see any better place to post.... For .NET running on Windows, is there any documentation on the behavior of calling WaitHandle.WaitAll(), WaitHandle.WaitAny() when the...more >>

Now that 2.0 has gone gold, how are people finding performance 1.1 versus 2.0? I know it's early days. I have a little test app and was disappointed to find that GDI+ perf and memory consumption, in this app, seems pretty much the same as before (ie slow/huge). A version of the same app ...more >>

All, I need to do a sanity check . . . Please tell if my logic is flawed . .. I have a site with some aspx pages on it. When I hit the site the worker process consumes some memory to serve the page. Now, my expectation is that memory will return to level that it was before the page was s...more >>