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• Netbook for DOTNET Development

  - by Abhijeet Patel

  I'm looking for a netbook to do some dotnet development. Is there a recommended brand/configuration. I'm looking for reasonably good performance. Here are some of my requirements: Win 7 ultimate MS Office VS 2008 and VS 2010 when it's out CodeRush good size keyboard without having to do a Fn+Key for Insert, Home, End and Del keys Preferably Core 2 Duo Decent battery life P.S. The config of the netbook handed out at PDC seems pretty awesome.

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• ModelVisual3D vs Model3DGroup

  - by bitbonk

  Is there any disadvantage of using ModelVisual3D over Model3DGroup. How much can the resource/performance impact possibly be? ModelVisual3D gives me much more than Model3DGroup does but AFAIK everything that can be done with Model3DGroup can alos be done with ModelVisual3D. So why not just always use ModelVisual3D?

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• Saving an Image from WPF's WebBrowser control - how do you do it??

  - by Luck

  Hi, everyone. There's probably a simple solution to this but I can't seem to find one. I'm playing around with the WebBrowser control in WPF that ships with Visual Studio 2010 and am trying to save an image that might appear on a webpage to disk programmatically. Many thanks in advance! Luck

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• ORM market analysis

  - by bonefisher

  I would like to see your experience with popular ORM tools outhere, like NHibernate, LLBLGen, EF, S2Q, Genom-e, LightSpeed, DataObjects.NET, OpenAccess, ... From my exp: - Genom-e is quiet capable of Linq & performance, dev support - EF lacks on some key features like lazy loading, Poco support, pers.ignorance... but in 4.o it may have overcome .. - DataObjects.Net so far good, althrough I found some bugs - NHibernate steep learning curve, no 100% Linq support (like in Genom-e and DataObjects.Net), but very supportive, extensible and mature

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• Is ASP.Net State Server an elegant solution?

  - by alchemical

  We have an ASP.Net MVC project that will start with a single web server but likely soon scale into a small web farm. As ASP.Net Authentication stores a UserID, and data caching may also be useful, we would likely need to make the jump to state server fairly soon. I'd like to hear from others how State Server has been to work with and how it scales from a performance perspective. Alternateively, we could architect it as completely stateless by not using data caching and tracking sessions with an encrypted cookie.

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• What does all these FindBugs prefixes AM, BC, DP, ... mean?

  - by Hans Klock

  http://findbugs.sourceforge.net/bugDescriptions.html contains a long list of error types. They belong to a category like correctness and performance but do start with an prefix too. EQ for equality is obvious, same like SQL or BIT. But some cryptic. Is there a list what all these prefixes mean?

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• Singleton object in IIS Web Garden

  - by Anwar Chandra

  I have a lot of Singleton implementation in asp.net application and want to move my application to IIS Web Garden environment for some performance reasons. CMIIW, moving to IIS Web Garden with n worker process, there will be one singleton object created in each worker process, which make it not a single object anymore because n 1. can I make all those singleton objects, singleton again in IIS Web Garden?

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• Any other ways to install heroku except gem install

  - by pierr

  Hi, Command gem install heroku failed with following messsage and I have tried the solution here , but failed also. So , is there any other way i can install heroku? WARNING: RubyGems 1.2+ index not found for: http://gems.rubyforge.org/ RubyGems will revert to legacy indexes degrading performance. ERROR: could not find gem heroku locally or in a repository

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• How to Profile a C-Program in a Loop of Shell Script, Using Shark on Mac?

  - by Peter Lee

  Hi all, I have a question about Shark-profiling on mac. Say if I have a C-program, compiled with: gcc -o mycprog mycprog.c -g -pg and also I have a shell script something like: for file in ($SomeDirectory) do mycprog $file done I need to profile the average performance for all files in $SomeDirectory. Where should I put the shark -i command? Thanks.

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• System architecture: simple approach for setting up background tasks behind a web application -- wil

  - by Tim Molendijk

  I have a Django web application and I have some tasks that should operate (or actually: be initiated) on the background. The application is deployed as follows: apache2-mpm-worker; mod_wsgi in daemon mode (1 process, 15 threads). The background tasks have the following characteristics: they need to operate in a regular interval (every 5 minutes or so); they require the application context (i.e. the application packages need to be available in memory); they do not need any input other than database access, in order to perform some not-so-heavy tasks such as sending out e-mail and updating the state of the database. Now I was thinking that the most simple approach to this problem would be simply to piggyback on the existing application process (as spawned by mod_wsgi). By implementing the task as part of the application and providing an HTTP interface for it, I would prevent the overhead of another process that is holding all of the application into memory. A simple cronjob can be setup that sends a request to this HTTP interface every 5 minutes and that would be it. Since the application process provides 15 threads and the tasks are quite lightweight and only running every 5 minutes, I figure they would not be hindering the performance of the web application's user-facing operations. Yet... I have done some online research and I have seen nobody advocating this approach. Many articles suggest a significantly more complex approach based on a full-blown messaging component (such as Celery, which uses RabbitMQ). Although that's sexy, it sounds like overkill to me. Some articles suggest setting up a cronjob that executes a script which performs the tasks. But that doesn't feel very attractive either, as it results in creating a new process that loads the entire application into memory, performs some tiny task, and destroys the process again. And this is repeated every 5 minutes. Does not sound like an elegant solution. So, I'm looking for some feedback on my suggested approach as described in the paragraph before the preceeding paragraph. Is my reasoning correct? Am I overlooking (potential) problems? What about my assumption that application's performance will not be impeded?

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• .NET PerformanceCounter for Hard Faults/sec

  Vista's Resource Monitor includes a reading for "Hard Faults/sec". Is there an equivalent performance counter I can use in C# to get this reading? I've tried the "Page Faults/sec" under the memory category, but that appears to be something different.

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• Detect when application is running in a VM environment

  - by Malcolm

  Looking for ideas on how to detect when our Windows application is running in one of the following VM environments. Some starter ideas for detection are in parentheses. There may be (much) better detection techniques - the starter ideas I've come up with are based on my Google research. VMWare (looking for the presence of optional VMware Tools is one way) Microsoft Virtual PC (have a device named "Virtual HD" for their IDE disks, "MS Virtual SCSI Disk Device" for their SCSI disks) Citrix Xen Sun Virtual Box Thank you, Malcolm

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• Mac App Store Reviewer says "It appears Kiwi fails codesign verification"

  - by isaiah

  But it clearly does not fail on my system. The Verification test in XCode during the submission should (I assume) test this. And running codesign on the command line of the archived app results in: /Users/iac/Library/Application Support/Developer/Shared/Archived Applications/272860A0-961E-47E7-B62F-0F7D373D938A.apparchive/Kiwi.app: valid on disk /Users/iac/Library/Application Support/Developer/Shared/Archived Applications/272860A0-961E-47E7-B62F-0F7D373D938A.apparchive/Kiwi.app: satisfies its Designated Requirement Anyone run into something like this before? Thanks, Isaiah

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• How to: mirror a staging server from a production server

  - by Zombies

  We want to mirror our current production app server (Oracle Application Server) onto our staging server. As it stands right now, various things are out of sync, and what may work in testing/QA can easily fail in production because of settings/patch/etc inconsistencies. I was thinking what would be best is to clone the entire disk daily and push it onto the staging server... Would this be the best method...?

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• Maximum file size given a particular inode structure?

  - by notso1337

  Suppose a UNIX file system has some constraints--say, 2 KB blocks and 8B disk addresses. What is the maximum file size if inodes contain 13 direct entries, and one single, double, and triple indirect entry each?

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• Django: Password protect photo url's?

  - by MikeN

  From my Django application I want to serve up secure photos. The photos are not for public consumption, I only want logged in users to have the ability to view them. I don't want to rely on obfuscated file id's (giving a photo a UUID of a long number) and count on that being hidden in my media folder. How would I store a photo securely on disk in my database and only stream it out to an authenticated session?

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• SoapUI JMS Connections

  - by Damo

  I am using SoapUI to do performance testing of some services over JMS using WebSphere MQ as the JMS Provider. SoapUI uses HermesJMS to provide the JMS Connection details for the JMS Endpoint. I've noticed that when I call a request from SoapUI the JMS Connection is never closed. This results in hundreds of SYSTEM.DEF.SVRCONN channel connections. It seems to be specific to SoapUI as HermeJMS doesn't exhibit this behaviour. Has anyone else seen this?

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• Jstack and Not enough storage is available to process this command

  - by tropikalista

  I'm trying to run jstack command on my java application. Application is rather big, running inside jboss AS occupying about 4gb of memory. OS is Windows Server 2003 Standard edition. Every time i get an error "Not enough storage is available to process this command". There is enough ram, 16gb, and disk space. So, any ideas?

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• Quickest way to fill SQL Table with Dummy Data

  - by Alex

  What is the quickest way to fill a SQL table with dummy data? I have a wide table with about 40 fields of different kinds (int, bit, varchar, etc.) and need to do some performance testing. I'm using SQL Server 2008. Thank you!

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• Exposing functionality over ASP.NET WebServices using best practices

  - by Erup

  In terms of performance, IIS process management and reliability, is there a best practice in how to expose functionality over ASP.NET webservices? Like: Each consulting service in a specific asmx (like consultA.asmx) All consulting services in one asmx (like consults.asmx) NOTE: In this case, I cannot use WCF

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• Delphi 6 - Bugs disappear when I compile multiple times.

  - by Daisetsu

  My Delphi installation has been going downhill for the past few months. It seems though that every so often when I build a release it has strange errors in it which are resolved if I build, then compile, then build, compile, etc. I've talked to another developer who thinks that this is a compiler error. This sort of degrading performance over time has happened on other computers to us too. What does stack overflow think could be the problem.

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• Is priority queue a non-linear data structure?

  - by Maxood

  If yes then why priority queue is a non-linear data structure? Does non-linear data sturctures are bad in performance as compared to linear ones? If yes then why? Please explain in detail.

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• Why is SpringSource Tool Suite (STS) so slow? And how can I fix it?

  - by colbeerhey

  I've been running STS 2.3.2 on a MacBook Pro for a few days now. I'm finding the performance to be significantly slower than any other build of Eclipse I've used. For example, switching from one tab to another can take up to 4 seconds. I tried turning off much of the validation, and increasing the memory, but it's not making a difference. Are others having similar experiences?

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• Comparsion between Pixel Bender(in Flash) and Pixel Shaders(in Silverlight)

  - by Andy Li

  Can someone explain the different between Pixel Bender in Flash and Pixel Shader(HLSL) in Silverlight in terms of programming flexibility and run-time performance?

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• How use Django with Tornado web server ?

  - by xRobot

  I need Tornado for create a high performance comet chat. I am very newbie and I don't know how to get started. Please help.

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