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• hung up troubleshooting packet discards

  - by Chris Satola

  I realize my question is generic, but hopefully someone may have some guidance for me. My network consists of Cisco switches. I am seeing a significant amount (upwards of millions of packets per day) transmit drops between two switches. One being a 3750 and the other a 3560. The peak throughput of this link is only upper 400Mbps, so it shouldn't be a bandwidth issue. At this point, I am sort of clueless where to look or what tools I can use to determine what packets are dropping and why. I can setup a SPAN port on that link and wireshark it, but I don't know if that could tell me anything. Does anyone have any suggestions? Thanks in advance.

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• wifi routers and concurrent devices

  - by Joelio

  We have a Linksys WRT54G WiFi router in our office which was working great when we had 5-6 folks. Now on peak days we have 10-15 people, each with a computer, smartphone, etc, and an ooma VOIP device. On average 1-2 times a day I need to go hard reboot the router, and sometimes the border router (Cox-supplied device). I assume this is just because the router cant handle this many concurrent users. So my question is can these consumer routers handle this kind of load? If not, would adding more devices solve the problem, and how close proximity can I put 2 routers without having interference problems (our office area is not that big physically)?

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• Simple UPDATE query with (sometime) long query times

  - by Eric

  I run a dedicated MySQL server (2 cores, 16GB RAM) serving 100-200 requests per second. It is getting sluggish during peak traffic and I have a hard time optimizing the server. So I'm looking for some ideas now that I have done lots of Innodb fine-tuning with the "TUNING PRIMER" The query that now generates most slow queries is the following (see result from mysqldumpslow): Count: 433 Time=3.40s (1470s) Lock=0.00s (0s) Rows=0.0 (0), UPDATE user_sessions SET tid='S' WHERE idsession='S' I am very surprised to have so many long queries for such a simple query with no locking. Fyi, the table is InnoDB and has 14000 rows. It contains all active sessions on the site with approx 10 UPDATE and SELECT hits per second. Here is its structure: CREATE TABLE `user_sessions` ( `personid` mediumint(9) NOT NULL DEFAULT '0', `ip` varchar(18) COLLATE utf8_unicode_ci NOT NULL, `idsession` varchar(32) COLLATE utf8_unicode_ci NOT NULL, `datum` date NOT NULL DEFAULT '0000-00-00', `tid` time NOT NULL DEFAULT '00:00:00', `status` tinyint(4) NOT NULL DEFAULT '0', KEY `personid` (`personid`), KEY `idsession` (`idsession`), KEY `datum` (`datum`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci Any ideas?

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• Can I install Windows OS (Windows 7) on a removable USB hard drive?

  - by Hemant

  I wanted to take a sneak peak at Windows 7 so I thought of installing it. I have Windows Vista on my laptop which came pre-installed with it. I didnt want to mess with it. So I created a partition (20 GB) in my USB external hard disk and tried to install Windows 7 on that partition. But when I booted from Windows 7 DVD and selected the target partition on USB hard disk, it said it cannot be installed. Is there any way to install windows on external USB hard disk?

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• Server suddenly running out of entropy

  - by Creshal

  Since a reboot yesterday, one of our virtual servers (Debian Lenny, virtualized with Xen) is constantly running out of entropy, leading to timeouts etc. when trying to connect over SSH / TLS-enabled protocols. Is there any way to check which process(es) is(/are) eating up all the entropy? Edit: What I tried: Adding additional entropy sources: time_entropyd, rng-tools feeding urandom back into random, pseudorandom file accesses – netted about 1 MiB additional entropy per second, problems still persisted Checking for unusual activity via lsof, netstat and tcpdump – nothing. No noticeable load or anything Stopping daemons, restarting permanent sessions, rebooting the entire VM – no change in behaviour What in the end worked: Waiting. Since about yesterday noon, there are no connection problems anymore. Entropy is still somewhat low (128 Bytes peak), but TLS/SSH sessions have no noticeable delay anymore. I'm slowly switching our clients back to TLS (all five of them!), but I don't expect any change in behavior now.

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• teamviewer display is slow to refresh

  - by brunoais

  I'm using teamviewer from time to time to connect my portable computer with my desktop computer when I need to check on something (personal use). One of the main things I've been noticing is that it is quite slow transfering the screen updates that keep happening. This happens more frequently when I'm moving full windows or when I open a window or when watching a small movie clip. I've tested the lowest maximum p2p speed I ever got in the last week between both and it is the desktop's upload speed of 6MB/s with the ping of 40ms (usually ~15 ms). With this I was expecting to have very sharp image and fast transfer speeds which is not what is happening. Just to clarify, both computer's individual core's CPU is not reaching its peak (25%) while teamviewer is active, so the encryption and decryption is not the cause. Why my connection between both computers so slow?

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• Cloud service to receive up to 30000 emails a minute

  - by David

  I am building a business where I want the infrastructure to be able to handle up to 30000 emails per minute during peak periods. The question is what kinds of services offer this? I expect to download the emails using SMTP or similar. I expect each email to have a total attachment size of 2 mb, and might have several attachments. I have considered utilizing Parse API from SendGrid, but I am worried because they offer this service for free. I have contacted them and I am waiting for answer. Are there any better and more suitable alternatives?

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• need for tcp fine-tuning on heavily used proxy server

  - by Vijay Gharge

  Hi all, I am using squid like Internet proxy server on RHEL 4 update 6 & 8 with quite heavy load i.e. 8k established connections during peak hour. Without depending much on application provider's expertise I want to achieve maximum o/p from linux. W.r.t. that I have certain questions as following: How to find out if there is scope for further tcp fine-tuning (without exhausting available resources) as the benchmark values given by vendor looks poor! Is there any parameter value that is available from OS / network stack that will show me the results. If at all there is scope, how shall I identify & configure OS tcp stack parameters i.e. using sysctl or any specific parameter Post tuning how shall I clearly measure performance enhancement / degradation ?

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• PackageForTheWeb "should not be executed directly"

  - by Sergei Ousynin

  When trying to install package (specifically, chipset drivers for Nexcom PEAK-series computer, but I guess it doesn't really matters) I get "PackageForTheWeb Error" saing "This program is used internally by PackageFromTheWeb. It should not be executed directly." I get this error on both Windows 2000 (where it should be installed) and Windows 7. The original driver CD was lost long time ago, so the package was downloaded from the Nexcom website, found no info about installer prerequisites there. What should I install (or anything else) to install this package? UPD: I found a solution - unpacked the package and executed setup.exe that was inside. But I'm pretty sure it's not an action supposed by vendor, so answers are still welcome.

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• Load testing nginx inside AWS

  - by andy

  I'm trying to load test nginx running on AWS. I need to try to optimise it to handle 1Gbps of inbound traffic. Currently I've got it to peak at 85Mbit/s by running nginx on an m1.large with 4 other machines hitting it by using ab with -i (for head requests) -k (keepalives) -r (ignore failed requests) -n 500000 -c 20000. I'm struggling to generate more than 85 Mbit/s traffic from 4 machines, yet when I do scp a large file I get nearly 0.25Gbit/s of traffic going over the network. Are there any tools or approaches that I could use to load test nginx that might generate more load? I'm only interested in inbound traffic, so perhaps a DoS tool could help if it chucks away responses? I'm hitting a very small (40 byte) static asset, and have peaked at handling 50K concurrent connections and getting 25k reqs/s when just using a single load generator machine.

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• Issue with aborted MySQL connections (error code: 4)

  - by arikfr

  Some of the connections between my application server (Ubuntu, Apache, PHP) and my DB server (Ubuntu, MySQL) are failing with error code 4. According to the documentation error code 4 is: OS error code 4: Interrupted system call At first I thought that maybe the issue is that the DB server has too many connections and fails because there are too much open files. But it seems not to be the case because: Too many open files has different error code (24). I've checked and during peak time the server had 497 files open (checked using lsof command) while the maximum is 1024. The TCP settings were already checked (see prior question). Any ideas what this can be or what should I check?

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• Splitting an HTTP request into multiple byte-range requests

  - by redpola

  I have arrived at the unusual situation of having two completely independent Internet connections to my home. This has the advantage of redundancy etc but the drawback that both connections max out at about 6Mb/s. So one individual outbound http request is directed by my "intelligent gateway" (TP-LINK ER6120) out over one or the other connection for its lifetime. This works fine over complex web pages and utilises both external connects fine. However, single-http-request downloads are limited to the maximum rate of one of the two connections. So I'm thinking, surely I can setup some kind of proxy server to direct all my http requests to. For each incoming http request, the proxy server will issue multiple byte-range requests for the desired data and manage the reassembly and delivery of that data to the client's request. I can see this has some overhead, and also some edge cases where there will be blocking problems waiting for data. I also imagine webmasters of single-servers would rather I didn't hit them with 8 byte-range requests instead of one request. How can I achieve this http request deconstruct/reconstruction? Or am I just barking mad?

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• config.nt not exist in windows server 2008 64bit

  - by user1853266

  i have a server with high traffic , it's about 20K request/sec at peak time and 5~10k request/sec at normal time but i have a serious problem i install nginx in windows server 2008 standard edition 64bit , but i get this error massage 2012/11/26 05:29:23 [error] 2496#2004: *3976 maximum number of descriptors supported by select() is 1024 while reading client request line, client: X.X.X.X, server: 0.0.0.0:8080 when i search , i found this problem is about dos application file handle limit , and i can be changed it on c:\windir\system32\Config.nt but config.nt not exist i also hear , in 64Bit os version , this file not exist so how can i change file handle in windows server 2008 - 64Bit ?

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• Should we regularly schedule mysqlcheck (or databsae optimization)

  - by scatteredbomb

  We run a forum with some 2 million posts and I've noticed that if left untouched the overhead in the mySQL (as listed in phpMyAdmin) can get quite large (hundreds of megabytes). I'm wondering if scheduling a normal mysqlcheck to optimize the tables is good practice? Any reason not to do it, say, once a week at an off-peak hour? There was a time over the summer where our site was constantly crashing because mysql was using up all resources. That's when I noticed the huge amount of overhead and optimized the database and haven't had any problems since then with stability. I figured if that was helping alleviate the issues, I should just setup a cron to automatically do this.

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• Perfmon quick rundown

  - by anon

  I've known quite along while about performance monitor on Windows. I have decided now to create a scheduled performance monitoring of my entire system so I can find bottlenecks for future improvements. So as you can imagine this is going to run 24/7 so I can identify peak utilization. With performance monitor on Windows 7 for example where are the logs stored (c:\perfmon)? Is there a log size? Even better is the a website that can get me up to speed with scheduling and best practices of perfmon? (I don't need an explanation of what I can monitor)

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• How do I reduce RAM usage on my server?

  - by Abs

  I have recently launched a site that is very popular but I am having trouble with scalability. My site makes heavy use of FFmpeg and at peak times RAM usage hits the 2 GB point quickly and the swap file starts getting used. CPU usage starts rising too. Users complain that the site is slow. They say this because all FFmpeg instances run very slow because of the number running at the same time. Users make use of FFmpeg on my server in real time. Is there anything I can consider or do to ease down the usage of the server and RAM just shooting up? Maybe there is something better than FFmpeg (!). Is the only solution "throwing some cash" at a more powerful server? I have given little information, please ask for more, so this problem can be solved.

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• minimum required bandwidth for remote database server

  - by user66734

  I want to build a small warehousing application for my company. We have a central warehouse which distributes to 8 sales points across the country. They insist on an in-house solution. I am thinking to setup a central mySQL db Linux server and have the branches connect to it to store sales. Queries to the db from the branches will be minimum, maybe 10 per hour. However I need all the branches to be able to store each sale data ( product ID, customer ID ) in the central db at peak time at most once every five minutes. My question is can I get away with simple 24mbps/768kbps DSL lines? If not what is the bandwith requirement? Can I rely on a load balancing router to combine additional lines if needed? Can you propose some server hardware specs?

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• How long does it take in practice to warm up large in-memory databases?

  - by Sim

  Companies such as Peak Hosting are offering 64 core machines with 512Gb RAM for $2K/month. This is a very interesting choice for in-memory databases such as Memcached/Redis as well as databases whose performance degrades rapidly when the data & indexes don't fit in RAM, such as MongoDB. My main concern with monster machines such as these is the time it takes to warm up an in-memory database. In my experience, theoretical metrics, e.g., that SATA can load 100Mb/sec, fall short of what happens in practice. Even at that rate, 100Mb/sec means that loading up 512Gb RAM machine from SATA disks can take over 1 1/2 hours (!). I am looking for real-world reports of warm-up times for machines with very large memory. Please, share details of the software on the machine, data size, storage configuration, e.g., SATA or SSD, network, hosting/cloud provider, if relevant, etc.

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• Desktop Fun: Adventure Icon Packs

  - by Asian Angel

  Do you long for adventure and excitement? If so you can add some of that goodness to your desktop with our adventure icon packs collection. A Sneak Peak To give you an idea of how these icons could look on your desktop we have an example set up here using the “LOTR – Armoury of the Third Age” set shown below. Note: Wallpaper can be found here. A close-up look at the icons… Indiana Jones and the Raiders of the Lost Ark Download Indiana Jones and the Temple of Doom Download Indiana Jones and the Last Crusade Download Indiana Jones and the Kingdom of the Crystal Skull Download Adventure Icons Note: This icon set in “.png” format only. Download Climb On Download Hieroglyphica Vol. 1 Download Hieroglyphica Vol. 2 Download Tribal Masks Download Kong Download Jolly Roger Vol. 1 Download Jolly Roger Vol. 2 Download Pirates Theme Icon Collection Note: This icon set contains both “.ico” and “.png” files. Download Vampire Hunter Kit 1 Note: This icon set contains both “.ico” and “.png” files. Download LOTR – Armoury of the Third Age Download If you enjoyed this icon collection then make certain to visit our new Desktop Fun section for more customization goodness! Similar Articles Productive Geek Tips Restore Missing Desktop Icons in Windows 7 or VistaAdd Home Directory Icon to the Desktop in Windows 7 or VistaQuick Help: Downloadable Show Desktop Icon for XPDesktop Customization: Sci-Fi Icon PacksDisplay My Computer Icon on the Desktop in Windows 7 or Vista TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Google Maps Place marks – Pizza, Guns or Strip Clubs Monitor Applications With Kiwi LocPDF is a Visual PDF Search Tool Download Free iPad Wallpapers at iPad Decor Get Your Delicious Bookmarks In Firefox’s Awesome Bar Manage Photos Across Different Social Sites With Dropico

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• Obama’s win and the geeky stuff behind his success

  - by Gopinath

  Mr. Obama is elected as President of United States for the second term with a great majority. Here are few geeky bytes associated with Mr.Obama’s success and the world records he set up Obama Creates New Records on Twitter and Facebook – Just after winning the race for president, Barak Obama setup world records on Twitter & Facebook. His tweet “Four more years” re-tweeted more than 770K times and his Facebook post received 3.8 million likes. Twitter Kills the Fail Whale, One Tweet at a Time – Twitter handled insane user loads with millions of tweets related to election and proved that it’s platform is now more robust than ever. In a post on the company’s engineering blog, Twitter said people sent 31 million election-related tweets on Tuesday alone. From 8:11 p.m. to 9:11 p.m. P.S.T., Twitter processed an average 9,965 tweets per second, with a one-second peak of 15,107 tweets per second at 8:20 p.m., the company said. Obama’s win a big vindication for Nate Silver, king of the quants – Nate Silver, a statistician and blogger was spot on in predicting Obama’s win many weeks. He did not depend on astrology or surveys to predict Obama’s success. He used big data and statistical analysis to project votes. CNET says “Despite some incredulous political pundits, the FiveThirtyEight statistician appears to have correctly predicted the winner in all 50 states in the presidential election” Inside the Secret World of the Data Crunchers Who Helped Obama Win – Team Obama used big data and analytical systems to win the elections!! Barack Obama Goes On Reddit For Last Campaign Stop Of Political Career – Reditt is getting a lot of Obama’s attention these days. He is quite often stopping by Reditt to say hi to the nerds & geeks hanging out there. His chat with nerds on Reddit has paid rich dividends.

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• CodePlex Daily Summary for Tuesday, June 15, 2010

  CodePlex Daily Summary for Tuesday, June 15, 2010New ProjectsBackup on Build: Backup critical files on each Visual Studio build.CDN Support for EPiServer CMS: This module adds CDN support for EPiServer CMS by modifying outgoing links.Custom WCF Bindings: This project contains some custom WCF LOB SDK bindings I have created including a SalesForce one. I will blog on updates as they occur. Please se...DocIcon for SharePoint 2010: DocIcon for SharePoint re-enables links from document icons in SharePoint 2010. This feature was in previous versions of SharePoint, but was remove...EEG Peak Detection: EEG Peak Detectionemployeemanagement1: employeemanagement1Enables map services on top of existing map providers like Google Maps: Services include Map visualization services, Map decoration services, Spot registration services and Spot naming services.fbprivacy: Tool to assess your Facebook Privacy SettingsfMRI SVM Toolbox: fMRI SVM ToolboxGCMS – using .Net for human CMS: GCMS makes only what you need to do with a CMS and nothing more and it makes it with .NETqjblog: My First Blog.Send2Sharepoint: Office(Word,Excel,Outlook) and windows explorer addin to upload documents to sharepoint document library. SharePoint Find and Replace: SharePoint Find & Replace allows you to replace a specific string within a site collection with a different value. For example, when you change a l...SharePoint Management Studio: This project developed on Visula Studio 2008 and c# language. The main aim is manage your SharePoint 2007 FARM.SharePoint PageController: A SharePoint solution which provides an extensible framework to perform actions on a per-page basis in SharePoint. OOTB functionality allows for f...SilverNotePad: Simple notepad built using MVVM patern.SolidWorks Addin Development: The SolidWorks Addin Development project is dedicated to helping developers and non-developers with creating fully functional addins.Sunlit World Scheme: Sunlit World Scheme is a nearly R4RS-compliant Scheme implementation that supports threading, TCP, UDP, cryptography, and simple graphics and windo...TimeBend: Time tracking gone wild.TinyCMS: Jednostavan CMS s mogućnosti unosa vijesti, linkova i natječaja. CSS je napravljen tek toliko... Aplikacija izrađena za dev4Fun natjecanje.Ujimanet Android: text categorization tool for androidVisual Storm Engine: Visual Storm es un motor para probar nuevas tecnologias orientadas a la creacion de video juegos. Por ahora solo soporta Windows Vista/7 y usa Dire...New ReleasesAjax ASP.Net Forum: developer.insecla.com-forum_v0.1.4: *VERSION: 0.1.4* FEATURES ADDED Rating Threads (Through AjaxCTK (included Ms .DLL in the BIN folder)) Empowered Within AJAX Custom star ima...AlphaGet: Alpha 3: Important: from this release WinGet changes its name to AlphaGet in order to identify it better and make it search-engine friendly. New Features N...Backup on Build: Backup on Build v1.0.0 Initial Release: Initial Release version 1.0.0Boleto.Net: BoletoNet: Última versão estável da BoletoNet.dll. O código fonte dessa versão pode ser encontrado em http://boletonet.codeplex.com/SourceControl/list/change...CDN Support for EPiServer CMS: CDN Support v1: See links on start page for information on how to use and install this module.Chargify.NET: Chargify.NET v0.750: Adding support for creating freemium subscription plans Adding preliminary JSON support Adding ISO 3166-1 Alpha 2 data embedded in the library ...Community Forums NNTP bridge: Community Forums NNTP Bridge V38: Release of the Community Forums NNTP Bridge to access the social and anwsers MS forums with a single, open source NNTP bridge. This release has ad...ContainerOne - C# application server: V0.1.3.0: New minor release containing: Infrastructure - core service An installer of a windows service which provides the following: Service registry Even...DocIcon for SharePoint 2010: wwEsp.DocIcon Deployment Package Release 1.0.0: This package installs the DocIcon feature on a SharePoint 2010 server farm. The solution is deployed as a Farm-level feature that can be enabled or...Ethical Hacking ASP.NET: Version 1.2.0.0: For the complete list of changes, new features and fixes in the new version, please view the Version History page. Read more about the available te...Folder Bookmarks: Folder Bookmarks 1.6.3: The latest version of Folder Bookmarks (1.6.3), with new features and Mini-Menu UI Changes (1.4). Once you have extracted the file, do not delete ...Hades: Projet Hadès - Official Demo - Version 0.1.1 Beta: Second release correcting some bugs... ---------------------------------------------------------------------------- - Projet Hadès - Official Demo...KooBoo Image Gallery: RC 1: This new Version has this features 1) Refactoring to change the mispelled word galery to gallery 2) Change to use the plugin in the same page of ...LibWowArmory: LibWowArmory 0.3 beta: LibWowArmory 0.3 betaThis release of the LibWowArmory source code matches the WoW Armory as of version 3.3.3. Changes since version 0.2.3:Solution...MailChimp4Umbraco: 0.90 stable: Can be used in productionMapWindow6: MapWindow 6.0 June 14: This version adds the WebMercator projection and fixes a bug that was causing some perfect spheres to be created as oblate WGS1984 spheroids.MDownloader: MDownloader-0.15.18.59782: Supported FileServe. Supported SharingMatrix. Fixed minor bugs.MGM - MyGroupManager: MyGroupManager v0.1.5 - Alpha: At this point the application appears feature complete and works pretty well. The code still needs some tweaks (error handling), and a general look...MvcPager: MvcPager 1.4: MvcPager 1.4 source codes and demo projects MvcPager 1.4版源代码及示例文件Nito.LINQ: Beta (v0.6): Rx version The "with Rx" versions of Nito.LINQ are built against Rx 1.0.2563.0, released 2010-06-09. Supported Platforms .NET 4.0 Client Profile, ...open gaze and mouse analyzer: Ogama 3.3: This release was published on 14.06.2010 and is a bugfix release. For the list of changes please visit http://www.ogama.net. Only use this installe...patterns & practices: Prism: Prism 4.0 Drop 2: Prism 4.0 Drop 2 Welcome to the second drop of Prism 4.0 (formally known as the Composite Application Guidance for WPF and Silverlight). This drop ...Prism Software Factory Light: 0.5 Beta: 4ward Prism Software Factory Light - 0.5 Beta releaseThis is the first public beta release of the 4ward Prism Software Factory Light that allows to...PROGRAMMABLE SOFTWARE DEVELOPMENT ENVIRONMENT: PROGRAMMABLE SOFTWARE DEVELOPMENT ENVIRONMENT--3.3: Over the last several months, my primary research effort has been directed at producing strictly portable development methods between C and C# . T...qjblog: v1.source: v1.sourceqjblog: v1blog: V1 BlogQuick Performance Monitor: Version 1.4.2: Added 'Move to new window' functionality.Refix - .NET dependency management: Refix v0.1.0.90 ALPHA: Added console tree-style visualisation of solution dependencies, as well as some bug fixes. This version should work out of the box with the demons...SEMICO Framework: Version Stable 1.0.0.3: Version Stable 1.0.0.3SharePoint Find and Replace: 1.0.16: Version: 1.0.16 This release is the first stable release of this project, including the Microsoft public license agreement. Fixes: Added about dia...SharePoint Management Studio: v1: v1SharePoint PageController: SharePoint PageController: For SharePoint 2010 and 2007 running on IIS 7Software Is Hardwork: Sw. Is Hw. Lib. 3.0.0.x+06: Sw. Is Hw. Lib. 3.0.0.x+06SolidWorks Addin Development: GenericAddinFramework-06.14.2010: R1.SourceGrid: SourceGrid 4.30: Sources are here Note that SourceGrid sources are not hosted on CodePlex. The sources are hosted on bitbucket.org Main Changes Improved hidden ...SSIS Expression Editor & Tester: Expression Editor and Tester v1.0.2.0: Corrected release of expression editor tool, no changes to control. Download and extract the files to get started, no install required. Changes Co...Sunlit World Scheme: Sunlit World Scheme - 20100614 - source and binary: This is the result of building the current source code in Debug mode. The source code is included.TinyCMS: TinyCMS: Source kodVCC: Latest build, v2.1.30614.0: Automatic drop of latest buildVianaNET - Videoanalysis for physical motion: VianaNET 1.2 - beta: This is the VianaNET beta release with some bug fixes. Would like to have some comments on it. Regards, AdrianWorkLogger: Worklogger Beta 1: Simple work logger for Windows in WPFMost Popular ProjectsWBFS ManagerRawrAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)patterns & practices – Enterprise LibraryPHPExcelMicrosoft SQL Server Community & SamplesASP.NETMost Active Projectspatterns & practices – Enterprise LibraryRhyduino - Arduino and Managed CodeCassandraemonCommunity Forums NNTP bridgedotSpatialjQuery Library for SharePoint Web ServicesBlogEngine.NETLightweight Fluent WorkflowNB_Store - Free DotNetNuke Ecommerce Catalog ModuleUmbraco CMS

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• Dutch Techdays 2011 in The Hague

  Microsoft organizes at April 27, 28 and 29 the Dutch Techdays in The Hague. Already for 14 years this is the biggest Microsoft event in The Netherlands where you get the chance to get up to speed with the latest technology with speakers all over the world. I have the pleasure to provide you with two sessions this year: At the DevDays Pre-conference four ALM experts from the Dutch region help you understand how to adopt and improve your agile practices for greater productivity and higher quality applications. The topics for the day are: Adopting SCRUM Improve the developer workflow Adopting Continous Integration Agile testing My second session, LAB Management in de Praktijk , is about one of the features in Visual Studio ALM a lot of people are not aware of, which is called Lab Management. In the Dutch edition of the .NET magazine, I already gave the first sneak peak into the product. In the session I will dive deeper in the product and show you how you can create your templates and your test environments. I also show you how you can execute the tests on these environments and how you can incorporate it in Team Build. As a speaker you have the advantage to attend other sessions as well. The sessions I really look forward to are: Entity Framework in de Praktijk (Pieter de Bruin) Introduction to Visual Studio Lightswitch (Beth Massi) Building Robust, Maintainable Coded UI Tests with Visual Studio 2010 (Brian Keller) CQRS op Windows Azure (Tijmen van de Kamp) Using SharePoint Search to Develop Custom Solutions (Mirjam van Olst) Application Performance on Windows Phone 7 (Caspar Ruhe) Have fun at the Techdays, and hopefully we have a chance to meet each other.

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• Miami 311: Built on Windows Azure

  - by Josh Holmes

  This is a cool use of Azure. The city of Miami tool their “311” data around potholes, trash pickup issues, recycling issues, broken sidewalks and the like and put that data in Azure. The next step is that they leveraged Bing Maps and Silverlight to visualize those issues spread on a map of the city. The solution takes advantage of virtually unlimited storage and processing power, provides the ability to quickly address service requests and implement updates even during peak times such as hurricane season. If things change, the City can bring the solution on site or move to a physical facility, all based on  need and cost-effectiveness. As a result, residents logging on to Miami 311 can see on average 4,500 issues in progress - not represented as a ‘list', but located on a map in relation to other projects in their neighborhood .  A simple click on the map allows them to easily drill down to more and more specific details if they want. In short, they have turned what used to be represented by a meaningless list of data into useful information, and created  actionable and consumable knowledge that is relevant to the citizens of Miami. For Miami, their ‘service call to the city' becomes an interactive process they can follow - and the City has a new tool to manage and deliver outcomes. … When the city made the move to the web, they chose tools they knew and software they trust. The Microsoft Windows Azure cloud platform made it easy to do, and they used both Bing mapping and Silverlight to build a user friendly front end. According to Port25 (Miami 311: Built on Windows Azure - Port 25: The Open Source Community at Microsoft), it took two people 8 days to implement the whole system and they are going to open source their solution so that other cities can leverage it. I haven’t seen yet where and how they are going to release it but I’ll keep you posted if I find out.

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• Ray Wang: Why engagement matters in an era of customer experience

  - by Michael Snow

  Why engagement matters in an era of customer experience R "Ray" Wang Principal Analyst & CEO, Constellation Research Mobile enterprise, social business, cloud computing, advanced analytics, and unified communications are converging. Armed with the art of the possible, innovators are seeking to apply disruptive consumer technologies to enterprise class uses — call it the consumerization of IT in the enterprise. The likely results include new methods of furthering relationships, crafting longer term engagement, and creating transformational business models. It's part of a shift from transactional systems to engagement systems. These transactional systems have been around since the 1950s. You know them as ERP, finance and accounting systems, or even payroll. These systems are designed for massive computational scale; users find them rigid and techie. Meanwhile, we've moved to new engagement systems such as Facebook and Twitter in the consumer world. The rich usability and intuitive design reflect how users want to work — and now users are coming to expect the same paradigms and designs in their enterprise world. ~~~ Ray is a prolific contributor to his own blog as well as others. For a sneak peak at Ray's thoughts on engagement, take a look at this quick teaser on Avoiding Social Media Fatigue Through Engagement Or perhaps you might agree with Ray on Dealing With The Real Problem In Social Business Adoption – The People! Check out Ray's post on the Harvard Business Review Blog to get his perspective on "How to Engage Your Customers and Employees." For a daily dose of Ray - follow him on Twitter: @rwang0 But MOST IMPORTANTLY.... Don't miss the opportunity to join leading industry analyst, R "Ray" Wang of Constellation Research in the latest webcast of the Oracle Social Business Thought Leaders Series as he explains how to apply the 9 C's of Engagement for both your customers and employees.

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• How to speed up file transfer to/from Ubuntu Server 11.10 (wifi)

  - by Alexander

  I've been searching AU & elsewhere for the last day and a half. Haven't found an answer so I joined AU to ask for help. I'm hoping someone can point me in the right direction. Ubuntu Server 11.10 Samba VSFTPD Windows 7 PC 2 MacBook Pro - Snow Leopard/Lion 1 iMac - Lion Wireless LAN using DLink DIR-655 Link Speed: 195 Mbit/s on Mac - 54Mbps on Windows ISP Connection: Cable - 20 down/3 up No Domain Controller. All machines are members of the same workgroup. No matter how I connect I can't get better than about 700K transfer rate up/down. Mac/PC, SMB/ftp, Domain Name/Local IP I've tried different user accounts and using different folders, different volumes on the server. Nothing seems to make a difference. 700K up/down. Period. Any suggestions would be greatly appreciated. Thanks, Alexander EDIT: Using sftp now and uploading seems to peak at 980k. After about 5 minutes into a 650MB file, downloading is at 1072k and climbing about 500b/s every ten seconds. If any of that matters... I was expecting a lot faster than 1Mb tx rate. Am I off base here? EDIT: From all I've read so far, perhaps the speed isn't that bad. I only installed Ubuntu out of boredom this past weekend. The trouble is, I like it. Guess it's time to ditch the wifi and run some Cat 5.

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