I have a site that will not use theming. But by default the value is set to true. Does ASP.NET do a check everytime to see if I'm using themes. Is there a performance hit? Thanks! paul ...
How do you folks retrieve all objects in code upfront? I figure you can increase performance if you bundle all the model calls together? This makes for a bigger deal, especially if your DB cannot keep everything in memory def hitDBSeperately { get X users ...code get Y users... code get Z users... code } ...
I'm wondering if this is a bad practice or if in general this is the correct approach. Lets say that I've created a view that combines a few attributes from a few tables. My question, what do I need to do so I can query against this view as if it were a table without worrying about performance? All attributes in the original tables ...
Hi folks, I have an interesting database problem. I have a DB that is 150GB in size. My memory buffer is 8GB. Most of my data is rarely being retrieved, or mainly being retrieved by backend processes. I would very much prefer to keep them around because some features require them. Some of it (namely some tables, and some identifiable ...
Modern x86 CPUs have the ability to support larger page sizes than the legacy 4K (ie 2MB or 4MB), and there are OS facilities (Linux, Windows) to access this functionality. The Microsoft link above states large pages "increase the efficiency of the translation buffer, which can increase performance for frequently accessed memory". Whic...
A little background on the application that I am gonna talk about in the next few lines: XYZ is a data masking workbench eclipse RCP application: You give it a source table column, and a target table column, it would apply a trasformation (encryption/shuffling/etc) and copy the row data from source table to target table. Now, when I ma...
I am working on an ASP.NET 3.5, C#, ASP.NET AJAX, JQUERY web application which currently is having some performance issues. I have a screen with the forms view control and when I edit the form and save it for the first time the POST takes 4.89 seconds and when I perform the same operation again for the second time the POST only takes 1.0...
I am using asp.net mvc 2.0 and I want to test how long it takes to execute some of my code. In one scenario I do this load xml file up. validate xml file and deserailze. validate all rows in the xml file with more advanced validation that cannot be done in the schema validation. then I do a bulk insert. I want to measure how long st...
hello. In general (or from your experience), is there difference in performance between for and while loops? What if they are doubly/triply nested? Is vectorization (SSE) affected by loop variant in g++ or Intel compilers? Thank you ...
I'm using LinqToSql to query a small, simple SQL Server CE database. I've noticed that any operations involving sub-properties are disappointingly slow. For example, if I have a Customer table that is referenced by an Order table, LinqToSql will automatically create an EntitySet<Order> property. This is a nice convenience, allowing me ...
Hi. I'm writing a ray tracer. Recently, I added threading to the program to exploit the additional cores on my i5 Quad Core. In a weird turn of events the debug version of the application is now running slower, but the optimized build is running faster than before I added threading. I'm passing the "-g -pg" flags to gcc for the debug...
I have just upgraded to VS 2010, and I have performance problems which I did not have before (in VS 2008). The most annoying thing is that it freezes while I work in the text editor. Sometimes when it freezes I see that it is saving auto recovery information, but not always. Almost anything I do gives an unacceptable long delay, like s...
Will the performance of a SQL server drastically degrade if the database is bigger than the RAM? Or does only the index have to fit in the memory? I know this is complex, but as a rule of thumb? ...
Please bear with me as I explain the problem, how I tried to solve it, and my question on how to improve it is at the end. I have a 100,000 line csv file from an offline batch job and I needed to insert it into the database as its proper models. Ordinarily, if this is a fairly straight-forward load, this can be trivially loaded by just ...
Hi, I'm wondering what is the performance impact of constantly calling the following methods: HttpContext.GetGlobalResourceObject() HttpContext.GetLocalResourceObject() The current implementatino iterates through the list of strings and translates them by reading the values from the global resource files. On average there are 50-100 ...
Hi folks! I have a WinForms application that uses XNA to animate 3D models in a control. The app have been doing just fine for months but recently I've started to experience periodic pauses in the animation. Setting out to investigate what is going on I have established these facts: It happens on my machine only, other machines works ...
I have a silverlight app which calls WCF services. I'm seeing some fairly strange behaviour. Internet Explorer: Open the silverlight app. Wait for a while (while = less than a minute). Perform an operation which needs to call the WCF service. There is a significant delay till the silverlight app makes the server call. Wireshark and WebD...
I have a simple query using JDBC of an Oracle database which is proving slow to retrieve, even though the query itself doesn't seem to be the problem. A profiler reveals that a lot of time is spent in: ResultSet#getString(String) methods, some of which are retrieving Oracle NUMBER columns which are of Java long precision, or thereabou...
We're trying to document the performance difference of our site using different browsers. We use LoadRunner for load testing but I don't see a way to specify the "browser engine" it uses to run it's tests (perhaps it's using it's own?). In any event I'm not sure that LoadRunner is the right tool for this job but we own it so if we can ...
Hi all, My app Windows forms .NET in Win XP copy files pdfs in shared network folder in a server win 2003. Admin user in Win2003 detects some corrupt files pdfs, in that shared folder. I want check if a fileis copied right in shared folder Andre Krijen says me the best way is to create a MD5Hash of original file. When the file is co...