In C# the string keyword (highlighted in Visual Studio as a data type) is just a shortcut to the String class right? In that case, it would be the same to use either while coding from the semantic point of view. However, is it the same from the performance point of view? I mean, when the mapping is performed: during compilation (I guess...
It just happens to me about one code design question. Say, I have one "template" method that invokes some functions that may "alter". A intuitive design is to follow "Template Design Pattern". Define the altering functions to be "virtual" functions to be overridden in subclasses. Or, I can just use delegate functions without "virtual". T...
I plan to use MS SQL Server 2005 application roles in my application. I will start the role by executing the *sp_setapprole* and finish by executing the *sp_unsetapprole* SPs. The application is implemented in ASP.NET. I've read that connection pooling doesn't work with application pooling and there is no way to react on connection disc...
Hello! I am working on a 2D scrolling game for iPhone. I have a large image background, say 480×6000 pixels, of only a part is visible (exactly one screen’s worth, 480×320 pixels). What is the best way to get such a background on the screen? Currently I have the background split into several textures (to get around the maximum texture s...
If I switch on the generating of debug info with Javac then the class files are 20-25% larger. Has this any performance effects on running the Java program? If yes on which conditions and how many. I expect a little impact on loading the classes because the files are larger but this should be minimal. ...
I've used SubSonic in a few POC projects, but nothing large. It's so easy to use, and it's possible to abstract away the fact that it uses the active record pattern (can move it toward a more domain driven approach). Has anyone on here used SubSonic on larger applications, and what kind of performance did you witness? Was your experienc...
I have a stored procedure currently executing a complicated fetch that is frequently timing out when used. The proposed solution in my department has been to simply increase the timeout time length; which I don't really want to do. I'd like to refactor this sproc, but because it's so complicated and undocumented (yay legacy systems) I'm ...
I like to keep my websites extremely light and fast, but of course I need some kind of user tracking and analytics. It seems like Google Analytics always takes significant enough processing time that I'd like to replace it with something faster (and/or hosted locally), perhaps having less features. I really only care about these metr...
I want to convert from char representing a hexadecimal value (in upper or lower case) to byte, like '0'->0, '1' -> 1, 'A' -> 10, 'a' -> 10, 'f' -> 15 etc... I will be calling this method extremely often, so performance is important. Is there a faster way than to use a pre-initialized HashMap<Character,Byte> to get the value from? Ans...
In LinqToSql, it is lovely easy to load a row, change a column, and submit the changes to the database: using (MyDataContext wdc = new MyDataContext()) { Article article = wdc.Article.First(p => p.ID == id); article.ItemsInStock = itemsinstock; wdc.SubmitChanges(); } The only drawback: Article is huge. To load the entire...
I know there is a learning curve, but what about performance? It seems to me that web forms would be less performant, but I havent tried MVC yet to know for sure. What is everyone else experiencing? ...
Hi, What tools are there that I can test out a WCF service? I am expecting allot of load so I want to have an idea how much a single server can handle. ...
I love programming with and for Windows Presentation Framework. Mostly I write browser-like apps using WPF and XAML. But what really annoys me is the slowness of WPF. A simple page with only a few controls loads fast enough, but as soon as a page is a teeny weeny bit more complex, like containing a lot of data entry fields, one or two t...
The graphics rendering on my development machine "feels" slow so I've just bought a graphics card to replace the on board graphics card. Before I install it I want to run some software that will measure the performance of my current card so that I can compare the before and after. Can you recommend something that will give me an object...
Is there any performance impact or any kind of issues? The reason I am doing this is that we are doing some synchronization between two set of DBs with similar tables and we want to avoid duplicate PK errors when synchronizing data. ...
We recently upgraded to Castor 1.2 from version 0.9.5.3 and we've noticed a dramatic drop in performance when calling unmarshal on XML. We're unmarshaling to java classes that were generated by castor in both cases. For comparison, using identical XML the time for the XML unmarshal call used to take about 10-20ms and now takes about 23...
I was wondering, if there is any generalities (among all the javascript engines out there) in the cost related to execute a given instruction vs another. For instance, eval() is slower than calling a function that already has been declared. I would like to get a table with several instructions/function calls vs an absolute cost, maybe ...
Today i stumbled upon an interesting performance problem with a stored procedure running on Sql Server 2005 SP2 in a db running on compatible level of 80 (SQL2000). The proc runs about 8 Minutes and the execution plan shows the usage of an index with an actual row count of 1.339.241.423 which is about factor 1000 higher than the "real"...
Currently we're using Web Application project, so we have a gain with compilation. But as far as I know, the aspx pages a still compiled at the first page hit. So does precompilation give a perceptible performance gain ? (first hit exluded). What type of web site (hits/sec, number of users) will benefit of it ? ...
Where I'm at there is a main system that runs on a big AIX mainframe. To facility reporting and operations there is nightly dump from the mainframe into SQL Server, such that each of our 50-ish clients is in their own database with identical schemas. This dump takes about 7 hours to finish each night, and there's not really anything we...