Hi, I was wondering if there's anyone out here who has experience with write-intensive data due to file import. The main requirement is for the business users to be able to import a data that represents relationships between master tables. They should be able to export the same in real-time ( as much as possible). Setup: front-end (...
Hi, Using dynamic-update or dynamic-insert has positive, though generally slight only on performance, as also mentioned by http://www.mkyong.com/hibernate/hibernate-dynamic-update-attribute-example/ But the reference documentation mentions that this could have negative performance effects also as mentioned below in http://docs.jboss.or...
Hello, this is more a theoretical question i asked myself. I remembered that BinarySearch of an ordered List(Collection in general) is faster than finding Rows with Datatable.Rows.Find or DataTable.FindByPK with a primary key value. Hence i fill a Datatable from Database in a shared constructor and immediately after that a List(of Int3...
I'm debugging a C++ MFC Windows mobile 6 application using Visual Studio 2008 across a USB ActiveSync link. It works ok, but it is very slow. e.g. Adding a new watch for an integer vairable takes ~20 secs. Task manager shows devenv.exe as using 50% CPU at this time, e.g. all cycles on one core, so the problem appears to be CPU bound r...
I saw that facebook is doing that. if you look in the chrome inspector they keep on adding "html documents elements" when you navigate on diferent pages. I also noticed that google dose this also. My intention is to make my PHP+DOM load faster under 200 ms from website backed. It's some web server thing? I'm using php with apache. T...
Does anyone have any experience in load testing ajax applications? specifically running jQuery as their javascript library? Loadrunner and Neoload is the two of the load testing applications that works on the gui layer. But none of whom supports the jquery library. As for the other load testing tools, like jmeter, grinder and other ht...
I alway wondered how could a very big site like facebook to be faster than any other sites ,though the very big large amount of data which stored everyday .. what they are using to store information and if I use sql server to store e.g news feed is that ok or what (the news feed will be stored in a separate table which called News) . ...
I'm making a very simple website with ROR. class Product < ActiveRecord::Base belongs_to :category has_many :photos has_many :ordered_photos, :class_name => 'Photo', :order => 'name' has_one :random_photo_1, :class_name => 'Photo', :order => '...
I am using the HTML canvas tag to draw around 3000, vector lines on a small area (900x500) the target platform is mobile which has inherently lower spec'd hardware. On my desktop I can make the 3000 vector lines render, using moveto and lineto in about 25ms. However on the mobile device it's more like 700ms which is significantly slower....
In ASP.NET which is better performance wise; Localization using the file based resx / resource system Localization by retrieving translations from a database Thanks ...
I am developping a plugin for Confluence (version 2.10). My plugin has some expensive process that would benefit a lot from caching. I have implemented a proof of concept with a simple HashMap as a cache. Now I need to put a real cache in place. I'd like to integrate my caches with the standard Confluence caches, so they could be manage...
Sometime back our architect gave this funda to me and I couldn't talk to him more to get the details at the time, but I couldn't understand how arrays are more serializable/better performant over ArrayLists. update:This is in the webservices code, if it is important and it can be that he might mean performance instead of serializability...
I'm building a large RTree (spatial index) full of nodes. It needs to be able to handle many queries AND updates. Objects are continuously being created and destroyed. The basic test I'm running is to see the performance of the tree as the number of objects in the tree increases. I insert from 100-20000 uniformly size, randomly locat...
I am migrating some old code where HtmlTextWriter is used extensively to render UI elements. I am migrating the code to use ASP.NET MVC 1.0. As far as I am aware, I am not using any of the HtmlTextWriter specific function (such as indentation). Currently, I am using a wrapper method to return string generated by the HtmlTextWriter as f...
I have to frequently check the memory usage by an application - it right does it every 60 seconds using java.lang.Runtime.freeMemory()/java.lang.Runtime.totalMemory() What if I do the above say every 5 seconds - any performance implications? (Hopefully not like System.gc() has) The application runs on Linux/Solaris/Windows/HP-UX/AIX...
Hello! Does someone know a fast way to invoke shader processing via DirectX? Right now I'm setting shaders using D3DXCreateEffectFromFile calls, which create shaders in runtime (once per each shader) from *.fx files. Rendering part for every object (every patch in my case - see further) then means something like: // -----------------...
Is it better to use boost::asio::basic_stream_socket::async_read_some instead of boost::asio::async_read when it comes to high performance data throughput? ...
Having recently worked on a project which required some more IO interaction than I'm used to, I felt like I wanted to look past the regular libraries (Commons IO, in particular) and tackle some more in depth IO issues. As an academic test, I decided to implement a basic, multi-threaded HTTP downloader. The idea is simple: provide a URL ...
I use jQuery. I have been reading a lot about selector performance and optimizing our AJAX app. I am looking to improve my selector performance. I know all the jquery performance tips. I haven't found an exact answer to a question I have. I am using almost every current jquery performance tip and yet my app still seems to lag quite a bi...
I have a simple php site that I built, but for some reason my photo gallery page takes a little long to load. Can someone tell what the problem is and how to speed up the load time? Here is php code. By the way I coded everything within this one file (photography.php), with only references to images in another folder... <?php $thisPag...