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• How are minimum system requirements determined?

  - by Michael McGowan

  We've all seen countless examples of software that ships with "minimum system requirements" like the following: Windows XP/Vista/7 1GB RAM 200 MB Storage How are these generally determined? Obviously sometimes there are specific constraints (if the program takes 200 MB on disk then that is a hard requirement). Aside from those situations, many times for things like RAM or processor it turns out that more/faster is better with no hard constraint. How are these determined? Do developers just make up numbers that seem reasonable? Does QA go through some rigorous process testing various requirements until they find the lowest settings with acceptable performance? My instinct says it should be the latter but is often the former in practice.

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• Max Degree of Parallelism Server-Side Setting

  - by Tara Kizer

  Recently I opened a case with Microsoft PSS to help us through a severe performance problem on a new system.  As part of that case, the PSS engineer checked our “max degree of parallelism” server-side setting.  It is our standard to use 4 on our production systems that have 16 CPUs (2 sockets, quad-core, hyper-threaded).  The PSS engineer had me run the below query to get Microsoft’s recommended value of “max degree of parallelism” server-side setting for our 16-CPU system: select case when cpu_count / hyperthread_ratio > 8 then 8 else cpu_count / hyperthread_ratio end as optimal_maxdop_setting from sys.dm_os_sys_info; The query returned 2.  I made the change using sp_configure, and it did not resolve our issue.  We have decided to leave it in place for now.   Do you agree with this query?  What are your thoughts on this? If you decide to change your setting to reflect the output of this query, please test it first to ensure there are no negative side effects.

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• Help comparing Cocos2d and Unity3d for this project.....

  - by Omega

  I will not go into details, but I would like to hear your opinions about this: Essentially, my project will be a 2d game, with lots of complex levels, where some might be simple and others might be a bit more deep, with physics, etc. We want to implement our very own online structure: logging in, leaderboards, achievements, friends etc with our own servers. This means no OpenFeint nor GameCenter at all. We expect this game to be very large in both graphics and audio. We wish to use in-app purchases. Now, we considered two options. Cocos2d and Unity3d. We need help deciding using the factors I mentioned before (networking, good performance even for a large game in terms of graphics and audio like this, in-app purchases, etc) which option would fit better this? Technically, both options can create 2d games. I'd like to hear your opinion.

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• Ray Tracing Shadows in deferred rendering

  - by Grieverheart

  Recently I have programmed a raytracer for fun and found it beutifully simple how shadows are created compared to a rasterizer. Now, I couldn't help but I think if it would be possible to implement somthing similar for ray tracing of shadows in a deferred renderer. The way I though this could work is after drawing to the gbuffer, in a separate pass and for each pixel to calculate rays to the lights and draw them as lines of unique color together with the geometry (with color 0). The lines will be cut-off if there is occlusion and this fact could be used in a fragment shader to calculate which rays are occluded. I guess there must be something I'm missing, for example I'm not sure how the fragment shader could save the occlusion results for each ray so that they are available for pixel at the ray's origin. Has this method been tried before, is it possible to implement it as I described and if yes what would be the drawbacks in performance of calculating shadows this way?

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• Juju bootstrap fails with "Temporary failure in name resolution" using Amazon AWS

  - by Will

  I have followed the instructions over at https://juju.ubuntu.com/docs/config-aws.html to try and setup myself with a juju environment. It all seemed to setup alright. SSH keys, Gererate config, repository, adding access id and secret keys to environments.yaml file. Although my key file from aws IAM management console was called credentials.csv rather than rootkey, I couldn't find that link described in the documentation. When I give the command juju bootstrap in the testing page. It fails giving me the error: juju bootstrap ERROR Get https://s3-us-west-1.amazonaws.com/juju-gobblygookmynukmbersinhere/provider-state: lookup s3-us-west-1.amazonaws.com: Temporary failure in name resolution (note I just replaced my numbers for this posting my actual terminal has my numbers in. This is my first attempt at any ec2 work so I have gone in and created new IAM profiles. What have I done wrong? Any help would be great. I think I'm in over my head!

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• Optimize strategies for xml parsing?

  - by Future2020

  I am looking for general optimization tips and guidelines for xml parsing. One of the optimization strategies is of course selecting the "right" parser. A detailed comparison between the available parsers for ios can be found here http://www.raywenderlich.com/553/how-to-chose-the-best-xml-parser-for-your-iphone-project. However, I am currently trying to investigate general guidelines and tips on how to optimize by payloads to increase the performance as possible. This question is similar to (a question I have posted in the context of ios) but I have not got a sufficient answer. So this question is not in the context of any particular programming language.

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• DOAG 2011

  - by Grant Ronald

  This week is the German Oracle User Group (DOAG) one of the largest Oracle User Groups in Europe.  We have a strong representation from Oracle's Product Management Team.  I kick of things with Dummies Guide to ADF on Tuesday 10am Frank Nimphius explains Task Flows in 60 minutes Duncan Mills give an insight into Real World Performance Tuning for ADF. Susan Duncan explains the Amazing World of Application Lifecycle Management and Duncan Mills finished the day with ADF Mobile Development There is also a load of interesting sessions on Forms, Apex and ADF from customers, partners and Oracle employees from Oracle Germany.  Looking to be a great conference.

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• What are unique aspects of a software Lifecycle of an attack/tool on a software vulnerability?

  - by David Kaczynski

  At my local university, there is a small student computing club of about 20 students. The club has several small teams with specific areas of focus, such as mobile development, robotics, game development, and hacking / security. I am introducing some basic agile development concepts to a couple of the teams, such as user stories, estimating complexity of tasks, and continuous integration for version control and automated builds/testing. I am familiar with some basic development life-cycles, such as waterfall, spiral, RUP, agile, etc., but I am wondering if there is such a thing as a software development life-cycle for hacking / breaching security. Surely, hackers are writing computer code, but what is the life-cycle of that code? I don't think that they would be too concerned with maintenance, as once the breach has been found and patched, the code that exploited that breach is useless. I imagine the life-cycle would be something like: Find gap in security Exploit gap in security Procure payload Utilize payload What kind of differences (if any) are there for the development life-cycle of software when the purpose of the product is to breach security?

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• Video Presentation and Demo of Oracle Advanced Analytics & Data Mining

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

  For a video presentation and demonstration of Oracle Advanced Analytics & Data Mining  click here. (This plays a large MP4 file in a browser: access is from Google.docs, and this works best with Google CHROME). This one hour session focuses primarily on the Oracle Data Mining component of the Oracle Advanced Analytics Option along with Oracle R Enterprise and is tied to the Oracle SQL Developer Days virtual and onsite events and is presented by Oracle’s Director for Advanced Analytics, Charlie Berger, covering: Big Data + Big Data Analytics Competing on analytics & value proposition What is data mining? Typical use cases Oracle Data Mining high performance in-database SQL based data mining functions Exadata "smart scan" scoring Oracle Data Miner GUI (an Extension that ships with SQL Developer) Oracle Business Intelligence EE + Oracle Data Mining results/predictions in dashboards Applications "powered by Oracle Data Mining" for factory installed predictive analytics methodologies Oracle R Enterprise Please contact [email protected] should you have any questions. 

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• Recorded YouTube-like presentation and "live" demos of Oracle Advanced Analytics

  - by chberger

  Ever want to just sit and watch a YouTube-like presentation and "live" demos of Oracle Advanced Analytics?  Then ' target=""click here! This 1+ hour long session focuses primarily on the Oracle Data Mining component of the Oracle Advanced Analytics Option and is tied to the Oracle SQL Developer Days virtual and onsite events.   I cover: Big Data + Big Data Analytics Competing on analytics & value proposition What is data mining? Typical use cases Oracle Data Mining high performance in-database SQL based data mining functions Exadata "smart scan" scoring Oracle Data Miner GUI (an Extension that ships with SQL Developer) Oracle Business Intelligence EE + Oracle Data Mining resutls/predictions in dashboards Applications "powered by Oracle Data Mining for factory installed predictive analytics methodologies Oracle R Enterprise Please contact [email protected] should you have any questions.  Hope you enjoy!  Charlie Berger, Sr. Director of Product Management, Oracle Data Mining & Advanced Analytics, Oracle Corporation

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• How to price code reviews to encourage good behavior?

  - by Chris Clark

  I work for a company that has a hosted .net internet application with many clients. Those clients often want to write customizations for our application. We have APIs to hook into the app, but the customizations themselves are written in .net. This is a shared, secure hosting environment and we have to code review these customizations before we can deploy them in our datacenter to ensure that they don't degrade performance, crash our servers, or open any security vulnerabilities. We charge for these code reviews. The current pricing model is simply a function of the number of lines of code. I think this is a bad idea for a variety of reasons, but primarily because, if we are interested in verifying that the code works as expected, we should be incentivizing good, readable code, not compaction. I would like to propose a pricing model that incorporates some, or all of the following as inputs: Lines of code Cyclomatic complexity Avg function length # of functions Are there any other metrics I should incorporate, or other ideas for how we can reasonably create pricing for code reviews that encourages safe and understandable code?

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• What is the role of web hosting in SEO [closed]

  - by Vinay

  Possible Duplicate: Does changing web hosting server affects SEO page ranking? SEO Geolocation What are the best ways to increase a site's position in Google? How to find web hosting that meets my requirements? I have read somewhere that hosting providers do play a role in website SEO, As my website is hosted in yahoo small business, That has got analytics and some other tool they provide to check the keyword activity, I think these can be achieved with the google's analytics as well, Server performance and Uptime is one important factor. I have also got few doubts in my mind 1) Does shared hosting affect the SEO and what is the role of domain extension like .com, .in, .org ,etc. 2) Does server geolocation affects the SEO 3) Does server OS affects the SEO. Apart from the above, Is there any factors that affect the SEO One more last question that If hosting really matters lot, can you suggest me a web hosting service for a small business e commerce site for PHP

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• How to deal with ad-hoc mindsets?

  - by Rotian

  I joined a dev team of six two month ago. People are nice, all is good. But more and more I observe an ad-hoc mindset. Stuff gets quick fixed, at the cost of future usability, there is little testing and two people happily admitted, that they like to carry the knowledge around in their head, rather than to write it down. How to deal with this? I'd like to lead by example, but time is limited - I like architecting and actually implementing the stuff. But I'm afraid the ad-hoc mindset infects me and rather than striving for clearness and simplicity in design and code - which isn't simple to establish - I get pulled down the drain of an endless spiral of hacks on hacks - which no outsider can uncouple - just for schedule's and management's sake.

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• My session at the Vancouver Silverlight User Group

  - by pluginbaby

  Next week I will be in Vancouver and talk at the local User Group: the Vancouver Silverlight User Group. Title: HTML5 and Silverlight 5: facts, assumptions and near future Abstract: In this session, I will try to clarify what we hear (and not hear) around these technologies, maybe add a few guess on their role in Windows 8... as well as presenting a technical comparison between HTML5 and Silverlight 5: HTML vs XAML, tools, languages, databinding, performance, etc. Date: Wednesday, July 6, 2011 Thanks Telerik to sponsor the room for this event. More details and registration: http://www.meetup.com/Vancouver-Silverlight-User-Group/events/22849231/

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• How do I write a good talk proposal for a FOSS programming conference?

  - by Andrew Grimm

  I'm hoping to give a talk at RubyKaigi this year, and I'd like to know what makes a good talk proposal. RubyKaigi is a conference run by Ruby enthusiasts (as opposed to it being a trade conference, or an academic conference). The proposal form can be seen here. So far, my draft proposal about a program I'm working on mentions: What the program is useful for and why it is relevant. How it works. What topics it touches upon (such as metaprogramming and testing) Is there anything that I should mention in my proposal? Also, how thorough should I be in my "Details of your talk" section? Should I be exhaustive, or only have a couple of short paragraphs?

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• Support / Maintenance documentation for development team

  - by benwebdev

  Hi, I'm working in the Development dept (around 40 developers) for a large E-Commerce company. We've grown quickly but have not evolved very well in the field of documenting our work. We work with an Agile / Scrum-like methodology with our development and testing but documentation seems to be neglected. We need to be able to make documentation that would aid a developer who hasnt worked on our project before or was new to the company. We also have to create more high level information for our support department to explain any extra config settings and fixes of known issues that may arise, if any. Currently we put this in a badly put together wiki, based on an old Sharepoint / TFS site. Can anyone suggest some ideal links or advice on improving the documentation standard? What works in other companies? Has anyone got avice on developing documentation as part of an agile process? Many thanks, ben

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• Good resources and tools for modern, heavy JavaScript development?

  - by Matt Greer

  I am interested in doing some projects that involve heavy use of JavaScript. Namely HTML5 based canvas games, potentially using node.js as well. I am interested in learning modern best practices, tools and resources for JavaScript. JavaScript is tough to research because you end up wading through a lot of really outdated material, hailing from the times that "JavaScript" was a four letter word. If you are heavily involved in JavaScript programming... What text editor or IDE do you use? What unit testing framework do you use? Do you use Selenium, or something else? What other tools do you use? What communities exist that discuss recent advents in JavaScript? What books do you read/refer to? What blogs do you read?

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• Oracle Enterprise Manager Cloud Control 12c: Neue Features im Release 2

  - by Ralf Durben (DBA Community)

  Seit dem 14.09.2012 steht ein neues Release 2 von Oracle Enterprise Manager Cloud Control 12c zur Verfügung. Zum ersten Mal in der Geschichte von Enterprise Manager hat Oracle ein neues Release für alle Komponenten und Plattformen am gleichen Tag freigegeben. Das neue Release steht also sowohl bzgl. OMS als auch der Agenten für alle unterstützten Plattformen zur Verfügung. Damit kann das neue Release sofort für alle Umgebungen eingesetzt werden. Oracle Enterprise Manager Cloud Control 12c Release 2 trägt die Versionsnummer 12.1.0.2 und ist vor allem ein Stabilitätsrelease. Es enthält hauptsächlich Bugfixes und Performance-Verbesserungen. Es gibt aber auch einige neue Features. Der heutige Tipp zeigt die neuen Features auf.

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• Computacenter first partner to offer Oracle Exadata proof-of-concept environment for real-world test

  - by kimberly.billings

  Computacenter (http://www.computacenter.com/), Europe's leading independent provider of IT infrastructure services, recently announced that it is the first partner to offer an Oracle Exadata 'proof-of concept' environment for real-world testing. This new center, combined with Computacenter's extensive database storage skills, will enable organisations to accurately test Oracle Exadata with their own workloads, clearly demonstrating the case for migration. For more information, read the press release. Are you planning to migrate to Oracle Exadata? Tell us about it! var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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• Larry Ellison Unveils Oracle Database In-Memory

  - by jgelhaus

  A Breakthrough Technology, Which Turns the Promise of Real-Time into a Reality Oracle Database In-Memory delivers leading-edge in-memory performance without the need to restrict functionality or accept compromises, complexity and risk. Deploying Oracle Database In-Memory with virtually any existing Oracle Database compatible application is as easy as flipping a switch--no application changes are required. It is fully integrated with Oracle Database's scale-up, scale-out, storage tiering, availability and security technologies making it the most industrial-strength offering in the industry. Learn More Read the Press Release Get Product Details View the Webcast On-Demand Replay Follow the conversation #DB12c #OracleDBIM

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• Support for 15,000 Partitions in SQL Server 2008 SP2 and SQL Server 2008 R2 SP1

  In SQL Server 2008 and SQL Server 2008 R2, the number of partitions on tables and indexes is limited to 1,000. This paper discusses how SQL Server 2008 SP2 and SQL Server 2008 R2 SP1 address this limitation by providing an option to increase the limit to 15,000 partitions. It describes how support for 15,000 partitions can be enabled and disabled on a database. It also talks about performance characteristics, certain limitations associated with this support, known issues, and their workarounds. This support is targeted to enterprise customers and ISVs with large-scale decision support or data warehouse requirements. The Future of SQL Server MonitoringMonitor wherever, whenever with Red Gate's SQL Monitor. See it live in action now.

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• How web server choose between unicode and utf-8 for accentued characters?

  - by jacques

  I have a web server with my ISP which replaces in the urls the accentued characters by their unicode values: for instance é (eacute) is translated to %e9 (dec 233). For testing I use locally Easyphp which translate those characters by their utf-8 equivalence: é is then replaced by the well known sequence %c3%a9 (é)... Browsers served by Easyphp don't decode unicode values but they do if running locally (utf-8 and non converted accent also)... I have been unable to find where this behavior is configured in the server. This is a problem as some urls are built by my application using the php rawurlencode() which seems to always encode with unicode values on both servers. Any idea? Thanks in advance.

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• Improving mdadm RAID-6 write speed

  - by BarsMonster

  Hi! I have a mdadm RAID-6 in my home server of 5x1Tb WD Green HDDs. Read speed is more than enough - 268 Mb/s in dd. But write speed is just 37.1 Mb/s. (Both tested via dd on 48Gb file, RAM size is 1Gb, block size used in testing is 8kb) Could you please suggest why write speed is so low and is there any ways to improve it? CPU usage during writing is just 25% (i.e. half of 1 core of Opteron 165) No business critical data there & server is UPS-backed. mdstat is: Personalities : [raid6] [raid5] [raid4] md0 : active raid6 sda1[0] sdd1[4] sde1[3] sdf1[2] sdb1[1] 2929683456 blocks super 1.2 level 6, 1024k chunk, algorithm 2 [5/5] [UUUUU] bitmap: 0/8 pages [0KB], 65536KB chunk unused devices: <none> Any suggestions?

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• Top Innovations for Sales Managers

  - by divya.malik

  Sales managers are always looking for ways to motivate their troops as well as make themselves more effective and productive. Here is a small X’mas present for those folks that are looking for some effective tips. Our friends at Selling Power magazine recently wrote an interesting blog post with top 10 best practices for sales managers. Here we go: Harness social media Strategically align marketing campaigns with sales efforts Establish a customer-centric sales process Realize ROI with CRM Embrace online collaboration Improve accuracy in sales forecasting and pipeline metrics Coach for sales success Leverage mobile technology Focus on sales enablement Improve sales performance and compensation management We have a complete suite of sales applications, to help increase sales revenues, sales productivity as well as to improve your sales execution. You can find more details here. For more details on the SellingPower blog post click here. Happy Holidays to you and your family.

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• June Edition - Oracle Database Insider

  - by jgelhaus

  Now available.  The June edition of the Oracle Database Insider includes: NEWS June 10: Oracle CEO Larry Ellison Live on the Future of Database Performance At a live webcast on June 10 at Oracle’s headquarters, Oracle CEO Larry Ellison is expected to announce the upcoming availability of Oracle Database In-Memory, which dramatically accelerates business decision-making by processing analytical queries in memory without requiring any changes to existing applications. Read More New Study Confirms Capital Expenditure Savings with Oracle Multitenant A new study finds that Oracle Multitenant, an option of Oracle Database 12c, drives significant savings in capital expenditures by enabling the consolidation of a large number of databases on the same number or fewer hardware resources. Read More VIDEO Oracle Database 12c: Multitenant Environment with Tom Kyte Tom Kyte discusses Oracle Multitenant, followed by a demo of the multitenant architecture that includes moving a pluggable database (PDB) from one multitenant container database to another, cloning a PDB, and creating a new PDB.  and much more.

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