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  • Very slow startup after update to 12.04

    - by M Legoh
    My hardware: Dell Latitude D600 laptop Processor: Intel Pentium (r) 1.8 GHz Memory 1.2 GiB Graphics R200 (RV250 4C66) x86/MMX/SSE2 TCL DRI2 Disk: 37.7 gb I did an update from 11.?? using the automatic system update that pops up when you switch/log on. Ever since then when I switch on the machine it takes approximately one hour to get to the login screen. Sometimes the actual login will take time too, but sometimes within a couple of minutes I am logged in. Once I am logged in I find I can work normally, the response is not swift, but is neither too slow that I cannot work. I was wondering if there was anything I could do to speed things up. I deliberately did not do a clean install from disk, because I did not want to loose settings on the machine.

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  • Why does Windows 7 overall performance is better than Ubuntu 11.10?

    - by user37805
    I have a i7 2600 processor, 8Gb DDR3 ram, nVidia GTX570, and Ubuntu takes 45-50 seconds to boot and 32-35 seconds to power off, while windows 7 boots in 20-25 seconds and shuts down in 10 seconds. Both OS with autologin enabled, and in dual boot. Ubuntu is slow with preload too, and doesn't show any boot splash after installing drivers and didn't recognize my nVidia graphics card on jockey GTK, I had to add x swat repository and that didn't worked. I installed proprietary drivers through terminal (nvidia-common, nvidia-settings) in order to have 3d acceleration. But it doesn't make any difference on the speed. I also have a Pentium 4 PC and ubuntu 11.10 is way faster than windows 7 or XP. Also with nvidia graphics card and preload. http://paste.ubuntu.com/924890/ there is my boot script, sorry but some words are in Spanish because my ubuntu is in Spanish. Not using WUBI, Ubuntu has its own partition, 64-bits, and Matlab 2011 has very low performance compared to windows version.

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  • Targeting a vehicle with complex movement?

    - by e100
    Targeting a vehicle with known constant velocity is simple, and collision is guaranteed. Imprecise AI can be modeled by adding a small error factor. But how would one go about targeting a vehicle whose movements are more complex? Perhaps it's evading the AI or another game object. I've been thinking about how I'd do it myself in a FPS (in which bullets have finite speed) and think there might need to be at least couple of targeting modes based on the target's movement in the previous second or so: If it's near linear (peak acceleration in a certain range) target with the linear model If it's highly irregular (perhaps size of bounding box of recent positions could be used?) , target at an average For now I can assume 2d space, AI is stationary and projectile moves linearly.

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  • best method for background uploader in Android

    - by Dr.Dredel
    Problem: I want to write a process that will allow a user to take photos with the device and for those photos to then be uploaded to some listener in the cloud. The user should not have to do anything to initiate the upload, a background listener would just watch the folder and as long as it finds files in it it would upload them and delete them. Two problems: 1) how to keep the program running in the background even after the user is no longer taking pictures (and if they reboot the device for it to wake up and finish the uploads, if any remain) 2) assuming the connection is spotty (as it always is) how to verify that a given image has completed its upload, and if not, to resubmit it. I don't need any code examples, I just would like opinions on the best strategy to get this implemented. I was going to use Apache commons and just do an upload to a PHP, but am not sure what sort of error checking exists to take into account a connection drop mid file. TIA.

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  • Oracle RightNow Cloud Service Roadmap - Live Webcast, Nov 13, 6pm CET

    - by Richard Lefebvre
    Did you miss out on Oracle OpenWorld this year? Then make sure you don’t miss out on this Webinar.  The Oracle RightNow development team shares the latest innovations and integrations, including future roadmap, for the Oracle RightNow Service Cloud platform.  Find out how these innovations will help you deliver exceptional customer service to your customers.Join our live Webcast on Wednesday, November 13, 2013, 09:00 a.m. PT / 12:00 p.m. ET (18:00 p.m. CET) to get up to speed with the latest updates and future capabilities, and learn how you can: Provide a more engaging Web experience Increase the effectiveness of assisted service Deliver the right answer at the right time - all the time Agenda Topics How RightNow fits into Oracle's vision for Oracle Service The latest updates to the Oracle RightNow Cloud Service platform Oracle's key investment areas and roadmap for Oracle RightNow Cloud Service Don’t miss this chance to learn how you can delight your customers while improving cost and efficiency.Register Now

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  • How many bits can be transfered through Ethernet at each time?

    - by Bobb
    I am writing a networking application. It has some unxpected lags. I need to calculate some figures but I cant find an information - how many bits can be transferes through Ethernet connection at each tick. I know that the resulting transfer rate is 100Mbps/1Gbps. But ethernet should use hardware ticks to sync both ends I suppose. So it moves data in ticks. So the question is how many ticks per second or how many bits per one tick used in ethernet. The actual connection is 100 Mbps full-duplex.

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  • Next step after first few years at work [closed]

    - by juniordeveloper87
    Its been 2 years since graduating from uni and working in a IT solutions company as a programmer. My initial year was particularly exciting when we were trying to get a fresh product up to speed. The product has now gone live and are in the maintenance phase. My current day job involves merely bug fixing and also small designing/implementing change requests and also helping resolve issues faced from clients. Slowly I feel a little 'normal' in my role. I wonder how I can make myself stand out. (I work in a company of no more than 200 people) Or what should be the next step I take after 2 years doing programming? Thanks!

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  • Can't catch newConnection() signal from QTcpServer

    - by Bob
    I am trying to make a simple server thread in QT to accept a connection, however although the server is listening (I can connect with my test app) I can't get the newConnection() signal to be acted on. Any help as to what I'm missing here would be much appreciated! class CServerThread : public QThread { Q_OBJECT protected: void run(); private: QTcpServer* server; public slots: void AcceptConnection(); }; void CServerThread::run() { server = new QTcpServer; QObject::connect(server, SIGNAL(newConnection()), this, SLOT(AcceptConnection())); server-listen(QHostAddress::Any, 1000); // Any port in a storm exec(); // Start event loop } void CServerThread::AcceptConnection() { OutputDebugStringA("\n***** INCOMING CONNECTION"); // This is never called! }

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  • Download a file using cocoa

    - by dododedodonl
    Hi All, I want to download a file to the downloads folder. I searched google for this and found the NSURLDownload class. I've read the page in the dev center and created this code (with some copy and pasting) this code: @implementation Downloader @synthesize downloadResponse; - (void)startDownloadingURL:(NSString*)downloadUrl destenation:(NSString*)destenation { // create the request NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:downloadUrl] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; // create the connection with the request // and start loading the data NSURLDownload *theDownload=[[NSURLDownload alloc] initWithRequest:theRequest delegate:self]; if (!theDownload) { NSLog(@"Download could not be made..."); } } - (void)download:(NSURLDownload *)download decideDestinationWithSuggestedFilename:(NSString *)filename { NSString *destinationFilename; NSString *homeDirectory=NSHomeDirectory(); destinationFilename=[[homeDirectory stringByAppendingPathComponent:@"Desktop"] stringByAppendingPathComponent:filename]; [download setDestination:destinationFilename allowOverwrite:NO]; } - (void)download:(NSURLDownload *)download didFailWithError:(NSError *)error { // release the connection [download release]; // inform the user NSLog(@"Download failed! Error - %@ %@", [error localizedDescription], [[error userInfo] objectForKey:NSErrorFailingURLStringKey]); } - (void)downloadDidFinish:(NSURLDownload *)download { // release the connection [download release]; // do something with the data NSLog(@"downloadDidFinish"); } - (void)setDownloadResponse:(NSURLResponse *)aDownloadResponse { [aDownloadResponse retain]; [downloadResponse release]; downloadResponse = aDownloadResponse; } - (void)download:(NSURLDownload *)download didReceiveResponse:(NSURLResponse *)response { // reset the progress, this might be called multiple times bytesReceived = 0; // retain the response to use later [self setDownloadResponse:response]; } - (void)download:(NSURLDownload *)download didReceiveDataOfLength:(unsigned)length { long long expectedLength = [[self downloadResponse] expectedContentLength]; bytesReceived = bytesReceived+length; if (expectedLength != NSURLResponseUnknownLength) { percentComplete = (bytesReceived/(float)expectedLength)*100.0; NSLog(@"Percent - %f",percentComplete); } else { NSLog(@"Bytes received - %d",bytesReceived); } } -(NSURLRequest *)download:(NSURLDownload *)download willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse { NSURLRequest *newRequest=request; if (redirectResponse) { newRequest=nil; } return newRequest; } @end But my problem is now, it doesn't appear on the desktop as specified. And I want to put it in downloads and not on the desktop... What do I have to do?

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  • Sqlite + Java: table not updating

    - by Ben L
    I'm using a Java wrapper for SQLite called SQLiteJDBC - this may have some bearing on any answers... I have a table which I've displayed in a GUI, within that UI I have a button for the fields for an individual row of that table. When I save my changes I do this... Statement stmt = connection.createStatement(); stmt.execute("update 'tableName' set 'fieldName'=1 where userid=1"); int updateCount = stmt.getUpdateCount(); My connection is valid, I get no exceptions thrown and getUpdateCount() returns '1' indicating that one row has been updated. However my table is not updated. I've spent the last few hours trying to work out what's going on but I'm not having any luck. Help!!

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  • Silverlight caching HTTP POST which results in a 404

    - by Steav
    Situation: I am developing a Silverlight-Application which needs Component based on a local HTTP Listener. The HTTP-Listener can't be 'required' to be installed and running when the Application starts, so the Application does the following: Handshake via HTTP POST If Connection failed open a Click-Once Setup to install the component. So far so good.... now the Problem is: If the HTTP POST for the Handshake fails, because the Listener is not running the POST is cached.... and the following Connection Attempts after the Service is running fail, because the HTTP POST is still in Cache after the first try. NOTE: This is NOT a policy-problem. I'm using SL4 PS: I allready tried adding a random parameter to the URL like First try: Second try: didn't work :-(

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  • Network programming on java

    - by maks
    I have written a simple network program on java using sockets. Program has a client and a server. When user types a word on client side, server simply return this word to client. On server side I use Serversocket and bind it to port 4444. Why does not firewall block this connection on my server PC? I ask this question because earlier I wrote this program using corba technology, and firewall on my server PC was blocking the connection to this port; when I disabled the firewall the program worked fine.

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  • Installed thinkfan, should I keep it?

    - by FRC
    Well I did fixed my overheating problem on my Lenovo T500 with Ubuntu 12.04 LTS. At the same time I did install Thinkfan. But since I have a solution for overheating now, I would like to know if there is any really good reason to keep it? My fan speed without it was cca 3000 RPM. When it installed droped to 2500RPM in idle time. Thinkpad have very quiet fans, so I don't really hear the noise when is on 3000RPM (no difference between 2000 or 3000 RPM). Is it better for processor to have more air or more air brings just more dust? Silly question but I would REALLY want to know the reason of keeping thinkfan.

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  • iOS - Losing in-app subscription?

    - by user3280451
    I've just built an iOS app that uses a non-reoccuring subscription model. You hit "buy" and then when the client device receives the receipt from the Apple server it whizzes it off to my server to validate it and add the subscription to my user database. If the connection fails before my server has responded then the request is cached, ready to be resent the next time the client comes online. My problem is, what happens if the connection fails between when the user hits the buy button and the receipt is received by the client from Apple? Theres no way for it to know that the purchase has been made? Presumably I should add a "restore purchases" button that sends all of the users receipts to my server which checks if they've already been validated and their respective subscriptions added to the database? Is there a less intrusive way of doing this?

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  • How listview delete data in database

    - by Bud33
    I have a problem to delete data in listview, I was able to delete data in listview select record, but data which selected is not deleted in the database, I have a source code Private _updateinputalltrans As Boolean Private Sub btndelete_Click(sender As System.Object, e As System.EventArgs) Handles btndelete.Click With Me.listviewpos.SelectedItem .Remove() End With MessageBox.Show("Are you sure delete this record?", "Confirmation", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation, New EventHandler(AddressOf DeleteData)) End Sub Private Sub DeleteData(ByVal sender As Object, ByVal e As EventArgs) Dim conn As New Connection(Connectiondb) If Me.updateinputalltrans = False Then If Me.listviewpos.Items.Count > 0 Then For Each del As ListViewItem In listviewpos.Items conn.delete_dtpospart(del.Text) Next End If End If End Sub delete_dtpospart a declare which connection to the database using a stored procedure

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  • Is It possible to use the second part of this code for repository patterns and generics

    - by newToCSharp
    Is there any issues in using version 2,to get the same results as version 1. Or is this just bad coding. Any Ideas public class Customer { public int CustomerID { get; set; } public string EmailAddress { get; set; } int Age { get; set; } } public interface ICustomer { void AddNewCustomer(Customer Customer); void AddNewCustomer(string EmailAddress, int Age); void RemoveCustomer(Customer Customer); } public class BALCustomer { private readonly ICustomer dalCustomer; public BALCustomer(ICustomer dalCustomer) { this.dalCustomer = dalCustomer; } public void Add_A_New_Customer(Customer Customer) { dalCustomer.AddNewCustomer(Customer); } public void Remove_A_Existing_Customer(Customer Customer) { dalCustomer.RemoveCustomer(Customer); } } public class CustomerDataAccess : ICustomer { public void AddNewCustomer(Customer Customer) { // MAKE DB CONNECTION AND EXECUTE throw new NotImplementedException(); } public void AddNewCustomer(string EmailAddress, int Age) { // MAKE DB CONNECTION AND EXECUTE throw new NotImplementedException(); } public void RemoveCustomer(Customer Customer) { // MAKE DB CONNECTION AND EXECUTE throw new NotImplementedException(); } } // VERSION 2 public class Customer_New : DataRespository<CustomerDataAccess> { public int CustomerID { get; set; } public string EmailAddress { get; set; } public int Age { get; set; } } public class DataRespository<T> where T:class,new() { private T item = new T(); public T Execute { get { return item; } set { item = value; } } public void Update() { //TO BE CODED } public void Save() { //TO BE CODED } public void Remove() { //TO BE CODED } } class Program { static void Main(string[] args) { Customer_New cus = new Customer_New() { Age = 10, EmailAddress = "[email protected]" }; cus.Save(); cus.Execute.RemoveCustomer(new Customer()); // Repository Version Customer customer = new Customer() { EmailAddress = "[email protected]", CustomerID = 10 }; BALCustomer bal = new BALCustomer(new CustomerDataAccess()); bal.Add_A_New_Customer(customer); } } }

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  • Estimating file transfer time over network?

    - by rocko
    I am transferring file from one server to another. So, to estimate the time it would take to transfer some GB's of file over the network, I am pinging to that IP and taking the average time. For ex: i ping to 172.26.26.36 I get the average round trip time to be x ms, since ping send 32 bytes of data each time. I estimate speed of network to be 2*32*8(bits)/x = y Mbps -- multiplication with 2 because its average round trip time. So transferring 5GB of data will take 5000/y seconds Am I correct in my method of estimating time. If you find any mistake or any other good method please share.

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  • Can I use the decorator pattern to wrap a method body?

    - by mgroves
    I have a bunch of methods with varying signatures. These methods interact with a fragile data connection, so we often use a helper class to perform retries/reconnects, etc. Like so: MyHelper.PerformCall( () => { doStuffWithData(parameters...) }); And this works fine, but it can make the code a little cluttery. What I would prefer to do is decorate the methods that interact with the data connection like so: [InteractsWithData] protected string doStuffWithData(parameters...) { // do stuff... } And then essentially, whenever doStuffWithData is called, the body of that method would be passed in as an Action to MyHelper.PerformCall(). How do I do this?

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  • What happens to an instance of ServerSocket blocked inside accept(), when I drop all references to i

    - by Hanno Fietz
    In a multithreaded Java application, I just tracked down a strange-looking bug, realizing that what seemed to be happening was this: one of my objects was storing a reference to an instance of ServerSocket on startup, one thread would, in its main loop in run(), call accept() on the socket while the socket was still waiting for a connection, another thread would try to restart the component under some conditions, the restart process missed the cleanup sequence before it reached the initialization sequence as a result, the reference to the socket was overwritten with a new instance, which then wasn't able to bind() anymore the socket which was blocking inside the accept() wasn't accessible anymore, leaving a complete shutdown and restart of the application as the only way to get rid of it. Which leaves me wondering: with no references left to the ServerSocket instance, what would free the socket for a new connection? At what point would the ServerSocket become garbage collected? In general, what are good practices I can follow to avoid this type of bug?

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  • Not getting return value

    - by scottO
    I am trying to get a return value and it keeps giving me an error. I am trying to grab the "roleid" after the username has been validated by sending it the username-- I can't figure out what I am doing wrong? public string ValidateRole(string sUsername) { string matchstring = "SELECT roleid FROM tblUserRoles WHERE UserName='" + sUsername +"'"; SqlCommand cmd = new SqlCommand(matchstring); cmd.Connection = new SqlConnection("Data Source=(local);Initial Catalog="mydatabase";Integrated Security=True"); cmd.Connection.Open(); cmd.CommandType = CommandType.Text; SqlDataAdapter sda = new SqlDataAdapter(); DataTable dt = new DataTable(); sda.SelectCommand = cmd; sda.Fill(dt); string match; if (dt.Rows.Count > 0) { foreach (DataRow row in dt.Rows) { match = row["roleid"].ToString(); return match; } } else { match = "fail"; return match; } }

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  • Images from remote source - is it possible or is really a bad practice?

    - by user1620696
    I'm building a management system for websites and I had an idea related to image galleries that I'm not sure it's a good approach. Since images might need good deals of space depending on how much images a user uploads an so on, I thought on using cloud services like dropbox, mega and google drive to store images and load then when needed. The obvious problem is that for me this seems a useless solution because it would be slow to download the images from the remote source, making the user experience not so good. Is there any way to save images of a image gallery on remote source without getting the user experience bad because of speed? Or this is really not a good practice?

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  • How to solve 'Badly constructed integrity constraints' in doctrine

    - by Carson
    When I execute the command './doctrine build-all-reload' It comes out the following output: build-all-reload - Are you sure you wish to drop your databases? (y/n) y build-all-reload - Successfully dropped database for connection named 'doctrine' build-all-reload - Generated models successfully from YAML schema build-all-reload - Successfully created database for connection named 'doctrine' Badly constructed integrity constraints. Cannot define constraint of different f ields in the same table. Here is the source code of Doctrine that outputs the error: here What causes the error? How can I debug where the error comes from?

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