Hi, I've used JQuery to make the elements in a table draggable. (I've never used JQuery before this). It works fine, but is very slow. For example, from the moment I click and hold on an item, to the moment the cursor changes is about 2 seconds. This is on Firefox 3.0.6. Once the item is being dragged, there's a shorter, but still notic...
Okay, so im sure plenty of you have built crazy database intensive pages... I am building a page that I'd like to pull all sorts of different / unrelated databse information from....here are some sample different queries for this one page: -article content and info -IF the author is a registered user, their info -UPDATE the article's...
Is there a way to detect the network speed and bandwidth usage in C#? Even pointers to open-source components are welcome. Thanks in advance. ...
I am using PHP with the Zend Framework and Database connects alone seem to take longer than the 0,02 seconds Google takes to do a query. The wierd thing today I watched a video that said Google connects to 1000 servers for a single query. With latency I would expect one server for every query to be more efficent than having multiple serv...
Hi all, is there a way to optimize the speed of the insertions in a java.util.Collection by specifying the order of the items ? For example java.util.Set<String> set = java.util.TreeSet<String>(); will this solution: set.add("A"); set.add("B"); set.add("C"); set.add("D"); set.add("E"); be faster than this one (random order) ? set...
I've got a ruby script which takes about 30 seconds to startup. It takes that much because it tries to load all libraries and stuff. When I do "ruby.exe -v" it's instant. I don't want to touch the original ruby script, which is not written by me. What are the tricks to speed this process up? Can I precompile it? Can I precache al...
The way to see how fast your code is going, is performance profiling. There are tools for it and such, but I wonder what the factors are for code speed. For instance, I've been told that image-editting software will use bitwise operations instead of integer variables to calculate their stuff, simply because it's faster. So that must me...
I've discovered that std::string's are very slow compared to old-fashioned null-terminated strings, so much slow that they significantly slow down my overall program by a factor of 2. I expected STL to be slower, I didn't realise it was going to be this much slower. I'm using Visual Studio 2008, release mode. It shows assignment of a...
Which is fastest way to implement a operation that returns the absolute value of a number? x=root(x²) or if !isPositive(x): x=x*(-1) Actually this question can be translated as, how fast is a if(and why please). My college programing professors always told me to avoid if's for they are extremly slow, but I always forgot to ask ho...
Hi Everyone, I have a fairly complex and large application that hands loads and loads of data. Is there a speedy way to add items to ComboBox that doesn't take so long? On my P3 3.2ghz, the following snippet takes just under a second to add around 32,000 items. (MasterCIList is a StringList with strings typically 20 - 30 bytes long)....
I have always believed that Debug builds are slower than Release builds since the compiler needs to additionally generate debugger information. I was recently surprised to hear one of my colleagues saying that release builds usually take more time. (I believe that it is only because of incremental linking/compiling). In general, which o...
On my laptop with Intel Pentium dual-core processor T2370 (Acer Extensa) I ran a simple multithreading speedup test. I am using Linux. The code is pasted below. While I was expecting a speedup of 2-3 times, I was surprised to see a slowdown by a factor of 2. I tried the same with gcc optimization levels -O0 ... -O3, but everytime I got t...
How do I count the number of files in a directory using Java ? For simplicity, lets assume that the directory doesn't have any sub-directories. I know the standard method of : new File(<directory path>).listFiles().length But this will effectively go through all the files in the directory, which might take long if the number of files...
Duplicate How do I improve my Typing Skills?.** I tried the test on http://speedtest.10-fast-fingers.com/. I reach only: You type 337 characters per minute You have 58 correct words and you have 1 wrong words How can I improve my typing speed? What free resources do you know of? Should I learn the Dvorak Keyboard? ...
I've got a social community with a lot of traffic. In the right column of the site's layout, we got a "online list" that prints out a 40x40px thumbnail pic of friends, people in your area etc. 30-40 images in total. Just before the right column loads, it hangs as all these images are loaded. I need a faster solution compatible down to ...
I have two <select> boxes on a form. Selecting an item in the first <select> box will determine what should appear in the second <select> (Using Ajax http_request). In some cases there can be a large 500 (guess) items in the second select and it takes time 5-10 seconds to update in IE. Firefox seems to work perfectly. I wonder if th...
We're using Pingdom to monitor our site availability and it's working well. Is there a similar service to monitor website latency? We want to make sure the site not only returns, but is running at a reasonable speed. We've made some internal test pages for monitoring, etc. but it'd be nice to have an external service to verify (especial...
I personally like option one below for maintainability but I could see option two getting me better performance. Option three is probably complete garbage. 1. ViewState["Calendar1.SelectionMode"] = Calendar1.SelectionMode; 2. ViewState["CSM"] = Calendar1.SelectionMode; 3. ViewState["Calendar1_SelectionMode"] = Calendar1.SelectionMode; ...
I'm trying to obfuscate a large amount of data. I've created a list of words (tokens) which I want to replace and I am replacing the words one by one using the StringBuilder class, like so: var sb = new StringBuilder(one_MB_string); foreach(var token in tokens) { sb.Replace(token, "new string"); } It's pretty slow! Are there an...
I have to keep thousands of strings in memory to be accessed serially in Java. Should I store them in an array or should I use some kind of List ? Since arrays keep all the data in a contiguous chunk of memory (unlike Lists), would the use of an array to store thousands of strings cause problems ? Answer: The common consensus is that t...