How to get the speed with Android SDK?
as topic , I want got the current Android holder speed, I see the GPS location class provide the property , but not sure whether it is available ... any help ? thanks. ...
speed
Timing a set of methods - the second time they are run, they are quicker.
I have an algorithm of which I'm using System.Diagonstics to time - via the Stopwatch. It works great but one thing I have noticed is that the first time I run the algorithm it takes around 52 milliseconds which is great. The second time I run the algorithm it takes only a fraction of that time. Is this due to the nature of .NET? Ea...
Objective-C Array Iteration Speed
I'm working on an application, I have a NSMutableArray that stores 20 or so sprites. I need to iterate through it fairly quickly and efficiently. The speed for my purposes is not optimal... I'm getting two values from each sprite as it iterates through, would it be more efficient (faster) to iterate through an array of say CGPoints then ...
Networking over the 3G network and Ftp/WCF
I need to upload images to a webserver and each image will have additional information that I'm thinking of encapsulating in an xml file. I am thinking of using FtpWebRequest and FtpWebResponse. Bue to bandwidth issues I will probably queue each image (with its associated xml file) and transfer them 1 at a time To get the best perform...
Can sIFR js files be combined into 1 js file?
In the new sifr 3, the author has implemented the ability to combine the css files into 1 file. There are 4 .js files total and I was wondering if there were any ideas how to combine these files for a faster loading time on the client side and also I was wondering if there was any way to just include the sIFR css styles in an already exi...
Does php run faster without warnings?
Since PHP code will run just fine even if it's riddled with warnings and notices about undefined indexes and non-static methods being called as static, etc, the question is, if I spend the time to remove ALL notices and warnings from my code will it run significantly faster? ...
QSqlTableModel.insertRecord() is very slow
Hello, I am using PyQt to insert records into a MySQL database. the code basically looks like self.table = QSqlTableModel() self.table.setTable('mytable') while True: rec = self.table.record() values = getValueDictionary() for k,v in values.items(): rec.setValue(k,QVariant(v)) self.table.insertRecord(-1,rec) The table curr...
Speeding up Facebook Connect
I'm working on enabling facebook connect with my website, and it seems to work pretty good so far. However, loading the facebook api library on every page of my site is bogging it way down. All the other php classes that I'm using compile in well under 1 second, but I'm seeing serve times ranging from 3 - 20 seconds just to get the faceb...
Speed of programming languages then and now.
Speed is an important part of choosing a programming language. Apparently, C++ is(for most people) the undoubted ruler when it comes to speed. Yet when asked with evidence to back this up, nothing can be offered. Usual excuses include: It's faster than Java There are so many blogs saying it, it must be true. It's the language I've le...
Store javascript variables in array
I am sure someone has gone over this but I have had no luck finding some results. I want to know what is the fastest way to maintain a proper variable scope. Here is some example jquery code I wrote this morning. var oSignup = { nTopMargin: null, oBody: $("div#body"), oSignup: $("div#newsletter_signup"), oSignupBtn: $("d...
Would the code described in http://tinyurl.com/yd2ar3q work for itunes' purchased AAC format?
I'm making an iphone app that needs to adjust audio speed, and in the question here , it decompresses audio, so I'm concerned with it working for Itunes' Encoded/Purchased AAC Audio format. Will it work? ...
Performance increase using Smarty + Caching?
Hey, I am going to start using codeigniter, but since it only offers to cache everything or nothing (which would not work, because I have logins, and other areas which cannot be cached) I was wondering whether it is a good idea to use Smarty. The only concern I have in this question is speed. (No yes/no smarty general question.) My Qu...
mixing cout and printf for faster output
After performing some tests I noticed that printf is much faster than cout. I know that it's implementation dependent, but on my Linux box printf is 8x faster. So my idea is to mix the two printing methods: I want to use cout for simple prints, and I plan to use printf for producing huge outputs (typically in a loop). I think it's safe t...
Speed up MySQL query containing 300k+ records
I need to lookup all my products (sku's) their latest stock quantity. I have one table (called "stock") with 315k+ records containing this information (a new batch of data is added every day, for most sku's). The reference data is in another table (called "stockfile"). This is the query to do it: SELECT s1 . * , f1 . * FROM stock s1 JO...
activerecord_session_store vs. sql_session_store
Does anyone have more recent stats on the speed gains in SqlSessionStore over ActiveRecord Session Store? Is anyone out there using SqlSessionStore because of gains over ARStore? More of a curiosity I guess. Seems there isn't a lot new on the SqlSessionStore side since like '07, even though the github.com repos show updates as late as ...
Very fast cache / access time-indexed data in c#
Hello there, I'm coding a data intensive app in c#. Currently, the app loads loads and loads of timeseries from a distant sql server, does a lot of calculation to create other timeseries, and I'd like to access to these timeseries fast. Each timeserie has a unique identifier, and should map from DateTime to anything (mostly floats, but...
C++ Vector vs Array (Time)
I have got here two programs with me, both are doing exactly the same task. They are just setting an boolean array / vector to the value true. The program using vector takes 27 seconds to run whereas the program involving array with 5 times greater size takes less than 1 s. I would like to know the exact reason as to why there is such a ...
Multiple MySQL queries and how to make my script go faster
Hello to all. Using PHP (1900 secs time limit and more than 1GB memory limit) and MySQL (using PEAR::MDB2) on this one... I am trying to create a search engine that will load data from site feeds in a mysql database. Some sites have rather big feeds with lots of data in them (for example more than 80.000 records in just one file). Some...
Is there a quicker way to process a sequence of element than using a loop?
Here I am storing the elements of a datagrid in a string builder using a for loop, but it takes too much time when there is a large number of rows. Is there another way to copy the data in to a string builder in less time? for (int a = 0; a < grdMass.RowCount; a++) { if (a == 0) { _MSISDN.Appe...
Efficient rating system
I'm building a news rating script for this website that has a lot of users. I'm trying to make this websites as efficient as possible and now I'm wondering what would be the most efficient way to keep track of the votes. Of course I don't want users to vote more than once. My first though was to store it in a my MySQL database, but I'm ...