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• NHibernate - Is there a way to prevent version increment?

  - by Alice

  For performance reasons, sometimes I want to update entities without any version increment(or version check). With LINQ TO SQL, I just left the version unchanged and it worked fine. Is this behavior possible in NHibernate?

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• Batch save in CastleProject ActiveRecord

  - by Alex

  I need to save thousand of records in a database. I am using CastleProject ActiveRecord. The cycle which stores that amount of objects works too long. Is it possible to run saving in a batch using ActiveRecord? What is recommended way to improve performance?

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• storing images in sqlserver using c#

  - by barq

  i want to store images of my employees with thier profiles in sql server database. i have following reservations. whether i should compress images or not if yes please provide me sample code or article how should i retrieve images efficiently, i an afraid of asp.net application performance issue. i think with ten thousand employee records it will halt or slow down

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• Where should i store data table [ViewState/ Session/ Catch]

  - by Hemant Kothiyal

  Hi I have datatable having around 10 thousand rows. I would like to store this data once for aspx page. When use select different options in page data would be further select from already stored datatable. I then tried solution using ViewState, but as soon as data grow beyond 100 rows, performance degrade. Where should i store data please help?

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• Are compilers smart enough to detect a no-op function?

  - by 0x80

  If I write a function like this: void doMaybeNothing() { #ifndef IM_LAZY doSomething(); #endif } Are modern compilers smart enough to detect a no-op function and optimize so that there are no cycles wasted? Or is there always a small performance impact?

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• CSS - Advantages of single image file vs multiple files

  - by Hamish

  I have noticed that alot of sites now, have all of their images in single files are then use background-position to offset the rectangle which is shown on the screen. Is this for performance reasons? If so why?

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• What is the best way to modify a few fields in an XML using Java

  - by Kailas J C

  I have a big XML which contains around 300 elements. I need to modify 2 or 3 elements in this xml using Java. I don't want to go for conventional marshalling and unmarshalling as it involves the parsing of the whole XML. How is XPath/XSLT manipulation? I know that I can easily read the data but i need to modify the same and put in back in the same XML. The primary concern here is performance. Kindly advise

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• Is there a difference between placing JavaScript calls in $(document).ready(function(){ and placing

  - by Walker

  Is there a difference, performance or efficiency wise, between placing javascript calls such as blur, onclick etc. in $(document).ready(function(){ as opposed to placing them in DOM? Thanks!

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• Geometric Mean: is there a built-in?

  - by doug

  i tried to find a built-in for geometric mean but couldn't. (Obviously a built-in isn't going to save me any time while working in the shell, nor do i suspect there's any difference in accuracy; for scripts i try to use built-ins as often as possible, where the (cumulative) performance gain is often noticeable. In case there isn't one (which i doubt is the case) here's mine. gm_mean = function(a){prod(a)^(1/length(a))}

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• Video For Windows disable FILE_FLAG_NO_BUFFERING

  - by cunzlow

  I am using Video For Window's AVIFile functions. When I use AVIFileOpen I notice that it uses the flag FILE_FLAG_NO_BUFFERING when creating the .avi file. ProcessMonitor shows the that file was created with "no buffering". This flag is causing performance issues and I was wondering if there is a way to use this function without that flag.

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• hash_map and stdext:: hash_map?

  - by bit-question

  Under the visual C++, we have " hash_map" and "hash_set". In g++, we have " stdext::hash_map" and " stdext::hash_set". Is there any difference in terms of their respective performance or other factors?

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• nhibernate, entity framework, active records or linq2sql

  - by Omu

  my team is starting a new project on asp.net mvc, and we are wondering what technology for data access to use, how do you think which one is the best, who has the best performance ? which one is easier to use and to maintain ?

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• What do you consider the best CMS in Java

  - by Petr Macek

  Which CMS are you using in Java and what is your experience with it (in terms of extensibility, usage comfort, framework API, memory usage, performance etc.). I am looking for suggestions.

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• How to prevent image view loading while scrollong in iphone?

  - by Warrior

  I am new to iphone development.i want to check whether the image is loaded in the image view and if the image view is nil then load the image.i want to implement this in cell for row at index path so that i can increase the scrolling performance of the table , How can i do that ? please help me out.Thanks.

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• C++ - Difference between (*). and -> ?

  - by Rachel

  Is there any difference in performance - or otherwise - between: ptr->a(); and (*ptr).a(); ?

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• SQL Server Text type v.s. varchar data type

  - by George2

  Hello everyone, I have variable length character and want to store in SQL Server (2005) database. I want to learn some best practices about how to choose TEXT SQL type or choose VARCHAR SQL type, pros and cons in performance/footprint/function. thanks in advance, George

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• Trace IP Adress in Wordpress

  - by Ajith

  I need to trace the ipadress (where my website access)for optional loading of my theme.Explanation: I want to add a share link to twitter and facebok in my application.i think in some countries like china;twitter blocked.Thats why i need to check from where my site is accessing.otherwise which affecting my site's performance.How can we solve this problem in PHP.If anybody have experience please help me..

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• Using Predicate of a class to Search Generic list - Faster than looping?

  - by Srikanth

  Lets say we have a generic list of Class1, typically having ~100 objects for a given session. I would like to see if the list has a particular object. ASP.NET 2.0 allows me to do this: Dim objResult as Class1 = objList.Find(objSearch) How does this approach rate when compared to a traditional For loop, looking at a performance perspective? How would this vary with increase or decrease in length of the list?

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• Profiling With Visual Studio Team System

  - by Rotem

  Hi, I'm using Visual Studio Team System 2008 to run Load Tests. I have a test that executes a web service request and I would like to know how much time was spent in each layer of my application e.g. Time spent in IIS, Time spent in my Server application Time spent in SQL Server Can I get this sort of information by setting the performance counters in my load test properly? Thanks

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• Is there a way to detect inactive time of a user in a website? (Idle time)

  - by masoud ramezani

  This is my approach : I reserve last time that a user post a postback to server in a session and in every postback subtract this value from current value. Is there a better way for this? I think that my approach haven't a good performance.

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• What are the fundamental differences ASP.net and PHP?

  - by palhmbus

  Are there speed differences, performance issues, and what reasons do businesses have when they choose one or the other... and is there a learning curve steeper for one over the other? Also... are you likely to be paid more using one over the other?

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• Which method is best method for speed? in SQL Server, stored procedure

  - by AjmeraInfo

  I have select, insert, update and delete query. If I have to write all queries in the same stored procedure that is good for performance or should I write all queries in separate stored procedures?

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• is it that easy working with ADO.NET Entity framework in real programming?

  - by sam

  HI Guys, I was watching these videos series about Entity Framework: http://msdn.microsoft.com/en-us/data/ff191186.aspx is that easy building application in real world programming??? and is it ....reliable...has good performance... "I am a graduate.." thanks

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• C++ STL list vs set

  - by mokaschitta

  Hi, what of those two is faster for random insertions and deletions? I guess list, having the values as the keys as it is with sets seems to be attractive too though. Is performance similar for iterating over the whole container? Thanks!

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• What is the difference between is_a and instanceof?

  - by Daniel L

  I am aware that instanceof is an operator and that is_a is a method. Is the method slower in performance? What would you prefer to use?

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