Hi I am trying to compare the performance of Single and Multithreaded Java programs. Are there any single thread benchmarks which are available which I could then use and convert to their multithreaded version and compare the performance. Could anybody guide me as to what kind of programs(not very small) are suitable for this empirical c...
I have a treeview with around 200 records that needs to be fully expanded at all times (so no loading on demand). It is inside of an update panel with the updatemode set to conditional. There are other update panels on the page as well that are set to conditional. Depending on user actions the tree may need to be rebuilt by calling da...
Would a increasing value of performace counter total runtime checks indicate a performance issue, when it seems to be coming from Session.Linq of NHibernate? This has been measured in a asp.net environment. Regards ...
I think I'm going to use crontab to run a bunch of scripts that will: close all expired posts accept uncontested disputes add interest charges email out invoices send "about to expire" notifications I want the expired stuff to be removed pretty shortly after the event occurs, so I'm thinking about writing one script that will run and...
With reference to this post: http://stackoverflow.com/questions/2122546/how-to-implement-tag-counting I have implemented the suggested 3 table tagging system completely. To count the number of Articles per tag, i am using another column named tagArticleCount in the tag definition table. (other columns are tagId, tagText, tagUrl, tagArti...
I'm considering if it is a good idea to use an ASP.Net TabContainer-Control in the way that every TabPanel contains content of a different page. For example: Next i want to implement in my application is the masterdata management. Normally i would create one aspx page for every masterdata-table (f.e. Customer -> MD_Customer.aspx). Then i...
Hello, I would like to truncate the float to 4 digits. Are there some efficient way to do that? My current solution is: double roundDBL(double d,unsigned int p=4) { unsigned int fac=pow(10,p); double facinv=1.0/static_cast<double>(fac); double x=static_cast<unsigned int>(d*fac)*facinv; return x; } but using pow and delete seems t...
We have a vendor delivered database that to this point I have been able to avoid making any database structure changes to. We will be soon directly querying the tables directly for a related project. In order to pull all of the data we need, we will need to create a big SQL statement with multiple unions. select ... from table1 union s...
Warm-up I'm trying to come up with a good way to implement customized document forms. It's for a tool to request access to applications; each application will want to ask its own specific questions. The thing is, we have one kind of (common) user who needs to fill in and submit documents based on templates, and another kind of (super)...
Disclaimer: I realize the totally obvious answer to this question is HashSet<string>. It is absurdly fast, it is unordered, and its values are unique. But I'm just wondering, because HashSet<T> is a mutable class, so it has Add, Remove, etc.; and so I am not sure if the underlying data structure that makes these operations possible make...
Is there a way (without buffering the whole Inputstream) to take the HttpServletRequest from a Java Servlet and write it out to a file using all NIO? Is it even worth trying? Will it be any faster reading from a normal java.io stream and writing to a java.nio Channel or do they both really need to be pure NIO to see a benefit? Thanks....
Hey all, First off, I am not an AS 400 guy - at all. So please forgive me for asking any noobish questions here. Basically, I am working on a .Net application that needs to access the AS400 for some real-time data. Although I have the system working, I am getting very different performance results between queries. Typically, when ...
We have a data provider class that returns repositories for each aggregate in our database. Let's consider following scenario: public class DataProvider { public IBookRepository Books { get { retun new BookRepository(); } } public IAuthorRepository Authors { get { retun new AuthorRepository(); } } } As you can see, we return ...
My application compiled in .NET 4 seems to be performing really slow compared to .NET 3.5. When I did the performance analysis, I found out that the System.Math libraries in VS2010/.NET 4 have slowed down considerably. Any explanation to this? Has anyone else come across this or am I the only one seeing this? UPDATE: My sample code l...
I have a select from (nothing to complex) Select * from VIEW This view has about 6000 records and about 40 columns. It comes from a Lotus Notes SQL database. So my ODBC drive is the LotusNotesSQL driver. The query takes about 30 seconds to execute. The company I worked for used EXCEL to run the query and write everything to the works...
Hi, i have a stored procedure which takes lot of time to execure .Can any one suggest a better approch so that the same result set is achived. ALTER PROCEDURE [dbo].[spFavoriteRecipesGET] @USERID INT, @PAGENUMBER INT, @PAGESIZE INT, @SORTDIRECTION VARCHAR(4), @SORTORDER VARCHAR(4),@FILTERBY INT AS BEGIN DECLARE @ROW_STAR...
I mean PHP scripts on Apache are oriented for many users to use tham at the same time. So will 1000 requests which came at the (relatively) same time be fully processed faster than C# .Net program performing algorithm 1000 times in while loop? So we input same data, we perform same algorithm, which is written in the very same way (resp...
The below code functions, but Hibernate never lets go of its grip of any object. Calling session.clear() causes exceptions regarding fetching a joined class, and calling session.evict(currentObject) before retrieving the next object also fails to free the memory. Eventually I exhaust my heap space. Checking my heap dumps, StatefulPersis...
Hi there! Did anyone experience or know of negative side effects from having a high service instance count like 60k? Aside from the memory consumption of course. I am planning to increase the threshold for the maximum allowed instance count in our production environments. I am basically sick of severe production incidents just because ...
I have a form that contains a lot of runtime generated controls (image, button, panel,...), about 100 controls (I'm making a card matching game so there is a lot of controls in the form). I place the generating code into the constructor and each time the app starts, it took about 3-5s to load all the controls completely. If I bring an...