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• Update drivers for TL-WN851ND

  - by Tony_GPR

  Today I bought a new PCI wireless card, TP-Link WN851ND, with Atheros AR9227 chipset. It has 2 antennas and is compatible with Wifi N so I thought it would improve the quality of the signal. But after install it on my computer the result is the opposite to expected. It doesn't connect to my network, while my old Wifi BG card connect without problems, I created an access point from my smartphone to try the card, and work, but is very slow loading pages. In Windows 7 works perfectly, so I think the problem is the driver. I have Ubuntu 12.04 LTS with kernel 3.2.0.31, is there a way to update the driver or I can apply a patch to improve the performance of the card? Otherwise, anyone know if there is a work in progress to improve compatibility with this chipset, or is it better to change the card and buy one with better driver compatibility. And finally, which wireless N compatible chipsets have good support under Linux/Ubuntu?

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• is there any elegant way to analyze an engineer's process?

  - by NewAlexandria

  Plenty of sentiment exists that measuring commits is inappropriate. Has any study been done that tries to draw in more sources than commits - such as: browsing patterns IDE work (pre-commit) idle time multitasking I can't think of an easy way to do these measures, but I wonder if any study has been done. On a personal note, I do believe that reflection on one's own 'metrics' could be valuable regardless of (or in the absence of) using these for performance eval. I.E. an un-biased way to reflect on your habits. But this is a discussion matter beyond Q&A.

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• Setting coding priorities

  - by dotnetdev

  Hi, In the dev shops I've worked in, nobody has ever mentioned "coding priorities". I read this in a book or site somewhere, and sets the expectation of what priority should be first in the code. In places where this is not specified, what should the first priority be? It may sound simple to say "do what the business need requires", but that could be at the expense of performance/maintainability. Many people say maintainability first, regardless, some say fulfill the need regardless. I am a young developer, so I am probably missing the point somewhere. Of course, programming is engineering and tough because you can never have the perfect solution. Thanks

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• SL: Silverlight 5

  - by xamlnotes

  Check out this new demo from MIX11. http://code.msdn.microsoft.com/silverlight/3D-Housebuilder-demo-from-def4af04 SL 5 is the next big step for great apps in SL. This new release is adding more features to an already great technology.  You can find out more about this release at http://www.microsoft.com/silverlight/future/ . I particularly like the new features for business applications such as the next text improvements and making the combo box type ahead right out of the box. Plus there are more enhancements for databinding too.  And the list goes on and on with features such as performance and “trusted application”. Where is Sl 5 now? its in Release Candidate now so the final bits should not be far down the road.

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• Hack Fest Going Strong!

  - by Yolande Poirier

  Today was the first day of  the Hack Fest at Devoxx, the Java developer conference in Belgium.  The Hack Fest started with the Raspberry Pi & Leap Motion hands-on lab. Vinicius Senger introduced the Java Embedded, Arduino and Raspberry Pi. Java Champion Geert Bevin presented the Leap Motion, a controller sensing your hands and fingers to play games by controlling the mouse as an example. "Programmers are cooler than musicians because they can create entire universe using all senses" explained Geert In teams, participants started building applications using Raspberry Pi, sensors and relays. One team tested the performance of Tomcat, Java EE and Java Embedded Suite on the Raspberry Pi. Another used built an text animation using a LCD screen. Teams are using the Leap Motion to close and open programs on the desktop and other teams are using it as a game control. 

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• Why ISVs Run Applications on Oracle SuperCluster

  - by Parnian Taidi-Oracle

  Michael Palmeter, Senior Director Product Development of Oracle Engineered Systems, discusses how ISVs can easily run up to 20x faster, gain 28:1 storage compression, and grow presence in the market all without any changes to their code in this short video. One of the family of Oracle engineered systems products, Oracle SuperCluster provides maximum end-to-end database and application performance with minimal initial and ongoing support and maintenance effort, at the lowest total cost of ownership. Java or enterprise applications running on Oracle Database 11gR2 or higher and Oracle Solaris 11 can run up to 20X faster than traditional platforms on Oracle SuperCluster without any changes to their code.  Large number of customers are consolidating hundreds of their applications and databases on Oracle SuperCluster and are requiring their ISVs to support it. ISVs can become Oracle SuperCluster Ready and Oracle SuperCluster Optimized by joining the Oracle Exastack program. 

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• More Sessions At Central Coast Code Camp, Ruby/Cloud Computing

    Should Your Application Run In The Cloud Im back and sitting in Steve Evans Session, Should Your Application Run In The Cloud.  Hes now explaining how computers, since the stone age,... This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Desktop sharing options for Ubuntu 12.04 with Unity

  - by Stefan Buynov

  I would like to be able to access my office Ubuntu 12.04 machine from home, from a Mac Mini with Mac OSX. I have a VPN and I am able to access my office machine over SSH, so connectivity is not a problem. I browsed other questions, and it seems that there are several options: VNC XRDP FreeNX (haven't heard this one before) Are there any other? I have been using Remote Desktop on Windows before, and I actually like it. Not sure how well is XRDP implemented. I also used VNC several years back, and I didn't like its performance back then - not sure if things have changed since then. As I said above, the machine I want to access is running Ubuntu 12.04, with Unity. And I am using Unity by choice - I really like it and would like to continue using it :) The client computer is running Mac OSX (Snow Leopard). Based on your previous experience what is the best setup for this environment?

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• In IE8, When File Download Completes, No Save Dialog Appears

  For quite some time now, when I download file using IE8, the file finishes downloading and there is no pop up that allows me to open the containing folder, or open the file itself.  Ive had to... This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Choosing the Right Financial Consolidation and Reporting Solution

  Financial reporting requirements for publicly-held companies are changing and getting more complex. With the upcoming convergence of US GAAP and IFRS, demand for more detailed non-financial disclosures, and the SEC mandate for XBRL financial executives are under pressure to ensure they have the right systems in place to support current and future reporting requirements. Tune into this conversation with Rich Clayton, VP of Enterprise Performance Management and BI products for Oracle, and Annette Melatti, Senior Director of Product Marketing for Financial Applications to learn about the latest market requirements, what capabilities are provided by Oracle's General Ledgers, and how customers can extend their investment in Oracle General Ledger solutions with Oracle's market-leading financial close and reporting products.

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• Alternative to Google Adsense which has good international coverage

  - by Yoga

  I have a technical blog (programming related) which has around 500 visit per days, 70% are international visitors and 30% are from US/CA. Google Adsense disabled my account due to invalid clicks so I can't use them (no need to explain here, they suck hard and never respect and listen to the publishers' appeal) I have tried adbrite and recently using chitika but they almost give me nothing, e.g. chitika 13,865 Page Views 4 clicks $0.01 The performance is so poor even I don't want to mention about it. I am already putting a full top banner and a 350x200 box in article body. I am researching if any alternative would provide more revenue for my internation visitors or technical visitors. Thanks.

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• Monday, 1st October: Presenting at JavaOne and Oracle Open World

  - by Darryl Gove

  On Monday 1 October I will be presenting at both JavaOne and Oracle Open World. The full conference schedule is available from here. The logistics for my sessions are as follows: JavaOne: 8:30am Monday 1 October. CON6714: "Mixed-Language Development: Leveraging Native Code from Java". San Francisco Hilton - Continental Ballroom 6 Oracle OpenWorld: 10:45am Monday 1 October. CON6382: "Maximizing Your SPARC T4 Oracle Solaris Application Performance". Marriott Marquis - Golden Gate C3 Hope to see you there!

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• Google I/O 2010 - What's hot in Java for App Engine

  Google I/O 2010 - What's hot in Java for App Engine Google I/O 2010 - What's hot in Java for App Engine App Engine 201 Toby Reyelts, Don Schwarz Learn what's new with Java on App Engine. We'll take a whirlwind tour through the changes since last year, walk through a code sample for task queues and the new blobstore service, and demonstrate techniques for improving your application's performance. We'll top it off with a glimpse into some new features that we've planned for the year ahead. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 8 0 ratings Time: 01:02:10 More in Science & Technology

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• CAM XML Editor version 2.2.1 now available.

  - by drrwebber

  CAM Editor v2.2.1 release is now available. Lots of nice enhancements, CAMV performance boost and important bug fixes for DoD, NIEM and LEXS schema. Download is available from the CAM XML Editor Resource Site. The CAM editor is the leading open source XML Editor/Validation/Schema designer for rapidly building and deploying complete XML information exchanges. Provides a visual WYSIWYG structure with rule entry wizards and drag and drop dictionary components. Will import, analyze and refactor existing XML Schema. Oracle is a proud sponsor of the project and its use on the NIEM.gov initiative.Creates XSD schema + JAXB bindings, Mindmap or UML models (XMI), XML test suite examples, HTML documentation + spreadsheets (NIEM IEPDs). XSD schema export in default, flatten, NIEM, and OASIS modes. Generates canonical component dictionaries from schema sets, ERwin models, or spreadsheets.

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• Google I/O 2010 - Writing zippy Android apps

  Google I/O 2010 - Writing zippy Android apps Google I/O 2010 - Writing zippy Android apps Android 201 Brad Fitzpatrick Come hear tips & war stories on making fast, responsive (aka "non-janky") Android apps. No more ANRs! Eliminate event loop stalls! Fast start-ups! Optimized database queries with minimal I/O! Also, learn about the tools and techniques we use to find performance problems across the system and hear what's coming in the future. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 3 0 ratings Time: 57:38 More in Science & Technology

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• How to survive if you can only do things your way as a programmer?

  - by niceguyjava

  I hate hibernate, I hate spring and I am the kind of programmer who likes to do things his way. I hate micro-management and other people making decisions for me about what framework I should use, what patterns I should apply (hate patterns too) and what architecture I should design. I consider myself a successful programmer and have a descent financial situation due to my performance in past jobs, but I just can't take the standard Java jobs out there. I really love to design things from scratch and hate when I have to maintain other people's bad code, design and architecture, which is the majority you find out there for sure. Does anybody relate to that? What do you guys recommend me? Open up my on company, do consulting, or just keep looking hard until I find a job that suits my preferences, as hard as this may look like with all the hibernate and spring crap out there?

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• Effects of automated time tracking/monitoring [closed]

  - by user73937

  What are the effects of monitoring the developers' computer usage? (Which program they use - based on the title of the applications - and how much time in a day they use the keyboard and mouse.) Would it has any positive or negative effects on productivity, morale, motivation, etc? It will not have any direct impact on the developers' salary or their performance review it's just for curiosity. The developer and their manager will only see the results. Would it change anything if only the developer is allowed to see the results? The developer can disable the monitoring (for privacy) but it won't count as work time (in the monitoring program).

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• Adjusting server-side tickrate dynamically

  - by Stuart Blackler

  I know nothing of game development/this site, so I apologise if this is completely foobar. Today I experimented with building a small game loop for a network game (think MW3, CSGO etc). I was wondering why they do not build in automatic rate adjustment based on server performance? Would it affect the client that much if the client knew this frame is based on this tickrate? Has anyone attempted this before? Here is what my noobish C++ brain came up with earlier. It will improve the tickrate if it has been stable for x ticks. If it "lags", the tickrate will be reduced down by y amount: // GameEngine.cpp : Defines the entry point for the console application. // #ifdef WIN32 #include <Windows.h> #else #include <sys/time.h> #include <ctime> #endif #include<iostream> #include <dos.h> #include "stdafx.h" using namespace std; UINT64 GetTimeInMs() { #ifdef WIN32 /* Windows */ FILETIME ft; LARGE_INTEGER li; /* Get the amount of 100 nano seconds intervals elapsed since January 1, 1601 (UTC) and copy it * to a LARGE_INTEGER structure. */ GetSystemTimeAsFileTime(&ft); li.LowPart = ft.dwLowDateTime; li.HighPart = ft.dwHighDateTime; UINT64 ret = li.QuadPart; ret -= 116444736000000000LL; /* Convert from file time to UNIX epoch time. */ ret /= 10000; /* From 100 nano seconds (10^-7) to 1 millisecond (10^-3) intervals */ return ret; #else /* Linux */ struct timeval tv; gettimeofday(&tv, NULL); uint64 ret = tv.tv_usec; /* Convert from micro seconds (10^-6) to milliseconds (10^-3) */ ret /= 1000; /* Adds the seconds (10^0) after converting them to milliseconds (10^-3) */ ret += (tv.tv_sec * 1000); return ret; #endif } int _tmain(int argc, _TCHAR* argv[]) { int sv_tickrate_max = 1000; // The maximum amount of ticks per second int sv_tickrate_min = 100; // The minimum amount of ticks per second int sv_tickrate_adjust = 10; // How much to de/increment the tickrate by int sv_tickrate_stable_before_increment = 1000; // How many stable ticks before we increase the tickrate again int sys_tickrate_current = sv_tickrate_max; // Always start at the highest possible tickrate for the best performance int counter_stable_ticks = 0; // How many ticks we have not lagged for UINT64 __startTime = GetTimeInMs(); int ticks = 100000; while(ticks > 0) { int maxTimeInMs = 1000 / sys_tickrate_current; UINT64 _startTime = GetTimeInMs(); // Long code here... cout << "."; UINT64 _timeTaken = GetTimeInMs() - _startTime; if(_timeTaken < maxTimeInMs) { Sleep(maxTimeInMs - _timeTaken); counter_stable_ticks++; if(counter_stable_ticks >= sv_tickrate_stable_before_increment) { // reset the stable # ticks counter counter_stable_ticks = 0; // make sure that we don't go over the maximum tickrate if(sys_tickrate_current + sv_tickrate_adjust <= sv_tickrate_max) { sys_tickrate_current += sv_tickrate_adjust; // let me know in console #DEBUG cout << endl << "Improving tickrate. New tickrate: " << sys_tickrate_current << endl; } } } else if(_timeTaken > maxTimeInMs) { cout << endl; if((sys_tickrate_current - sv_tickrate_adjust) > sv_tickrate_min) { sys_tickrate_current -= sv_tickrate_adjust; } else { if(sys_tickrate_current == sv_tickrate_min) { cout << "Please reduce sv_tickrate_min..." << endl; } else{ sys_tickrate_current = sv_tickrate_min; } } // let me know in console #DEBUG cout << "The server has lag. Reduced tickrate to: " << sys_tickrate_current << endl; } ticks--; } UINT64 __timeTaken = GetTimeInMs() - __startTime; cout << endl << endl << "Total time in ms: " << __timeTaken; cout << endl << "Ending tickrate: " << sys_tickrate_current; char test; cin >> test; return 0; }

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• Blogging from 37,000ft

  - by Dave Ballantyne

  Im currently on my way to Sql Rally nordic and looking forward to a few days of full on SQL geekery and “Unleashing my inner Viking”.  I shall be speaking on Wednesday afternoon on one of my favourite subjects “Cursors are Evil”.  Ok,  so lets put it into perspective, “Evil” is a bit dramatic , but “Often use inappropriately and can cause serious performance bottlenecks” didn't have quite the same ring If you are not going to be at SQL Rally,  im going to be repeating it at the Leeds and Manchester user groups on the 23rd and 24th of November respectively.  Presenting with me on these nights will be James Boother, so make it along to those if you can.  I look forward to seeing you at one of these events.

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• Advanced Analytics Oracle Data Mining - NEW 2-Day Training Course

  - by Mike.Hallett(at)Oracle-BI&EPM

  A NEW 2-Day Oracle University (OU) Instructor Led Course on Oracle Data Mining has been developed for partners and customers to learn more about data mining, predictive analytics and knowledge discovery inside the Oracle Database. Oracle Data Mining, provides data mining algorithms that run native for high performance in-database model building and model deployment. This OU course is a great way to learn the advantages and benefits of "big data analytics"; mining data, building and deploying "predictive analytics" all inside the Oracle Database and to work with OBI. To register for a class, click here, then click on View Schedule to see the latest scheduled classes and/or submit your information expressing interest in attending a class.

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• Upcoming Customer WebCast: SOA 11g Database: Guide for Administrators

  - by MariaSalzberger

  The SOA infrastructure database is used by SOA Suite products like BPEL PM, BAM, BPM, Human Worklow, B2B and Mediator. A SOA administrator is involved in many different tasks like installation, upgrade, performance tuning and other administrative topics. Another important one is purging - see the posting for this: SOA Suite 11g Purging Guide. We have implemented a guide to help with thess tasks: SOA 11g Infrastructure Database: Installation, Maintenance and Administration Guide. An upcoming advisor webcast planned for Wednesday, April 11 2012 at 15:00 UK / 16:00 CET / 07:00 am Pacific / 8:00 am Mountain / 10:00 am Eastern will walk you through the guide and show some of the highligts. Registration for this webcast is available in SOA 11g Database: Guide for Administrators [ID 1422913.1]. The presentation recording can by found here after the webcast. (https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&doctype=ANNOUNCEMENT&id=740964.1) The schedule for future webcasts can be found here (https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&doctype=ANNOUNCEMENT&id=740966.1)

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• Winforms Release History : Q2 2010 Beta (version 2010.1.0610)

  Q2 2010 Beta New Controls: RadListControl and RadDropDownList Added brand new RadListControl and RadDropDownList controls. Their purpose is to replace the existing RadListBox and RadComboBox controls entirely in the long term. The old controls will still be supported but users are encouraged to use the new ones since they address the fundamental shortcomings of the old controls, namely the slow performance when working with large data sets, lack of a flexible extensibility API and other minor...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Should tests be in the same Ruby file or in separated Ruby files?

  - by Junior Mayhé

  While using Selenium and Ruby to do some functional tests, I am worried with the performance. So is it better to add all test methods in the same Ruby file, or I should put each one in separated code files? Below a sample with all tests in the same file: # encoding: utf-8 require "selenium-webdriver" require "test/unit" class Tests < Test::Unit::TestCase def setup @driver = Selenium::WebDriver.for :firefox @base_url = "http://mysite" @driver.manage.timeouts.implicit_wait = 30 @verification_errors = [] @wait = Selenium::WebDriver::Wait.new :timeout => 10 end def teardown @driver.quit assert_equal [], @verification_errors end def element_present?(how, what) @driver.find_element(how, what) true rescue Selenium::WebDriver::Error::NoSuchElementError false end def verify(&blk) yield rescue Test::Unit::AssertionFailedError => ex @verification_errors << ex end def test_1 @driver.get(@base_url + "/") # a huge test here end def test_2 @driver.get(@base_url + "/") # a huge test here end def test_3 @driver.get(@base_url + "/") # a huge test here end def test_4 @driver.get(@base_url + "/") # a huge test here end def test_5 @driver.get(@base_url + "/") # a huge test here end end

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• Alachisofts new version of NCache announced at TechEd !

  Before coming to Microsoft I owned a consulting company that specialized in solving performance and scalability problems in web applications. It always amazed me how many seeming huge problems could be solved with a little strategic caching implementation. Alachisofts NCache is a PREMIER provider of advanced caching technology for ASP.NET. Though ASP.NET has caching functionality built in, NCache can help you take caching in your application to the next level. Here are some of the NEW...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• SSRS 2008 R2 KPIs with bullet graphs

  Key Performance Indicators are typically displayed in a scorecard with stop light indicators, which are either red, amber or green light icons. The limitation for these kind of indicators is that you can see the actual and target values in two different fields as well as see the status of the KPI in red, amber or green color. If the user wants to figure out the thresholds associated with the KPI, these values are generally not visible. Further, representing the threshold values in the scorecard itself defeats the purpose of the scorecard. The scorecard should display the KPI's status in the most summarized form and use a minimal amount of space on the dashboard. In this tip we would look at how to address this issue.

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