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  • hyperv machine guest loads slow

    - by Dani Avni
    this is by far one of the strangest things I have seen. I have a win 2008R2 cluster with a CSV. the CSV itself is on an iSCSI storage (hitachi HUS 110) basic config of the two hosts in the cluster is Dell R610 Win 2008 R2 with all patches 64GB 1 NIC for host access 2 NICs for guest access 2 NICs for iSCSI these machine work great and I can load a 2008R2 test guest machine on them in less than 90 seconds after the above config is running for over a year, I now need to add a new host. now the host is Dell R620 (Still intel but different CPU) Win 2008 R2 with all patches 64GB 1 NIC for host access 2 NICs for guest access 2 NICs for iSCSI I added this new host to the domain and to the cluster, I gave it access to the CSV and I tried loading the same guest machine that loads in 90 seconds in the other hosts. the machine loads in about 6 minutes. no matter how many times I try this the old hosts load the machine in about 90 seconds and this new host in around 6 minutes to eliminate any problems with the iSCSI connection, I added a new LUN and directly accessed it from the new host and I was working at around 300MB/s so no problem there. I also tested the connection between the other hosts and the new one and network is working fine there too. to eliminate problems in HyperV, I copied the machine to the local disk of the new host and it loaded in less than 20 seconds. now is the point were things get a lot stranger: in my tests I tried installing a fresh windows guest machine to the CSV from the new host. I noticed that while the fresh windows was installing, my test guest was loading in less than 90 seconds even on the new host (I repeated this a few times). If I paused the fresh install guest and tried loading the test guest again it loaded in 6 minutes. and again after I resumed the guest installation the test guest loaded fast. after the fresh windows was also loaded, I ran tests loading the fresh window and my test machine. each one of them loaded in about 5 minutes when I tried loading them separately. however when I started both of them in the same time they both loaded in around 2.5 minutes it seems that the iSCSI disk access is only working if it is under some load (although I never got to above 10% utilization according to the task manager) does anyone have any idea what could be the problem?

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  • VNC connection via SSH proxy machine

    - by pufferfish
    I would like to make a VNC connection from home to a Windows machine at work. The Windows machine is not accessible from the outside, but there is a Linux box that does have port 22 open, so it would seem that this can be done. I suspect it's just a command that "forwards" connections to port 22 on the Linux machine to the Windows machine? Just can't find an example that does exactly this though Thanks in advance!

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  • VNC connection through machine with only SSH port open

    - by pufferfish
    I would like to make a VNC connection from home to a Windows machine at work. The Windows machine is not accessible from the outside, but there is a Linux box that does have port 22 open, so it would seem that this can be done. I suspect it's just a command that "forwards" connections to port 22 on the Linux machine to the Windows machine? Just can't find an example that does exactly this though Thanks in advance!

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  • how do I copy from a remote linux machine to a local linux machine?

    - by leonbnu
    I sshed to a remote machine and want to copy some files from there to my local machine. Both are running linux. My local machine is behind a firewall, so I can't do "scp file_on_remote user@localmachine". I know I can do "scp user@remotemachine:/directory/file ./", but I need to wander around on the remote server to pick some files to download to local machine, so this way doesn't seem too appealing to me.

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  • Can we run windowservice or EXE in Azure website or in Virtual Machine?

    - by Arun Rana
    I have experienced with cloud service/hosted service on Azure. However regarding another project i am confused in selection in terms of functionalities. I have project (2 tier asp.net app) with that i need to run windowservice or exe which will do some functionality every day (like fetch data) so my confusions are as below Regarding Azure website Can i access RDP if i'll move to reserved instance? can i run windowservice/exe ? Regarding Virtual Machine Is it same as dedicated server? can i use WASD as database from application reside in same? I think i can run any exe and installed anything however azure is going to recycle this and if yes then what happened on recycling? can i use new window server 2012 (VHD) in that? Azure website & VM both are in preview mode so is it reliable to use it as production version?

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  • In a virtual machine monitor such as VMware's ESXi Server, how are shadow page tables implemented?

    - by ali01
    My understanding is that VMMs such as VMware's ESXi Server maintain shadow page tables to map virtual page addresses of guest operating systems directly to machine (hardware) addresses. I've been told that shadow page tables are then used directly by the processor's paging hardware to allow memory access in the VM to execute without translation overhead. I would like to understand a bit more about how the shadow page table mechanism works in a VMM. Is my high level understanding above correct? What kind of data structures are used in the implementation of shadow page tables? What is the flow of control from the guest operating system all the way to the hardware? How are memory access translations made for a guest operating system before its shadow page table is populated? How is page sharing supported? Short of straight up reading the source code of an open source VMM, what resources can I look into to learn more about hardware virtualization?

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  • Please guide this self-taught Web Developer.

    - by ChickenPuke
    One of the major regrets in life is that I didn't do something with my introversion. I didn't manage to get past the first year of college because of that. I have chosen the path where there are no video games and other time sinks, all I have is the internet to quench my thirst of learning the ins and outs of the field of Web Developing/Designing. Though currently, I'm taking a Web Design Associate course at one of the best Computer Arts and this is the last month of the class. Even though I'm still a sapling, I love this field so much. So basically, At school I'm learning web design while at home I'm teaching myself web-developing. First thing first, returning to college seems impossible at the moment because of some financial problems. I'm pretty comfortable with CSS and HTML and I'm into PHP/MySQL at the moment. Could you please provide me a web-development Curriculum to follow. And do I need to learn about the theories behind? And I think I'm still young(I'm 18 at the time of writing). Is it a good thing or bad thing for choosing this path? I'm glad with my decision but in all honesty, I'm worrying about my future and employment because I'm an undergrad, coming from a country where companies are degree b!tches, it saddens me so. Thank you. (My questions are the bold parts. )

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  • Initial review of Developer's Guide to Collections in Microsoft® .NET

    - by TATWORTH
    The code is well illustrated by diagrams. The approach is practical. The code is well commented, however the C# code samples would be better had they been fully Style Cop compliant. I am looking forward to reviewing the rest of this excellent book. I recommend this book to all C# and VB.NET Development teams. I concur with the author who states that the book is not for learning C# or VB.NET. It is an excellent book for C# or VB.NET developers to extend their knowledge of the Dot Net framework. To buy a copy, please go to http://shop.oreilly.com/product/0790145317193.do

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  • Umbraco Certified Developer - Level 2 - Chris Houston

    - by Vizioz Limited
    I just thought I'd create a quick blog post to say that I have now been on the Umbraco Level 2 course (which I would recommend!) and although it turned out that I pretty much new 95% of what was taught, the extra 5% and a chance to have a trip to Copenhagen made it worth it :)I am now officially Umbraco level 2 certified :)Hopefully over the next month I will have some time to start adding a few more useful blog posts to my blog. I know I've been a little slack on the posting in the last month, it's just been a busy time for me!

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  • Umbraco Developer 's Christmas Office :)

    - by Vizioz Limited
    This weekend my colleague and I decided it was a good idea to decorate our office for Christmas, it's quite difficult to actually photograph it to it's full effect, but you'll have to take our word for it, it looks pretty Christmasy :) We have a 7' Tree covered in lights and decorations, lights around our PC's, tinsel everywhere we could fit it, and even large snow flakes hanging from the ceiling..You'd think we have no work on, but if fact it's the opposite we're manically busy! But hey, it's a bit of fun and it seems to be cheering everyone up in this otherwise rather Dull Regus Serviced Office ;-)We can definitely recommend doing something a bit different, as it's got us noticed and we've already won enough extra work from companies in the building to pay for our office for a year, not bad :)So here's a photo of our office, has anyone else decorated their office? I'd be happy to update this post with any good Christmas office photos that you send me!Happy Christmas all!Chris

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  • Don’t Sleep Keeps Your Windows Machine Awake

    - by ETC
    Don’t Sleep is an ultra lightweight and portable application that fills a niche need perfect: sometimes you need to temporarily keep your Windows machine from shutting down or power saving without making any permanent changes to your power profile. Fire up portable Don’t Sleep and tell it how long you want it to stop your computer from shutting down, going to sleep (standby/hibernation), and/or keeping the monitor on. At the end of the monitoring period you can have it turn itself off, stay on but stop blocking, or shut down your computer. It’s a great application for those times you need to alter how your computer handles hibernation mode, activating the screensaver, or other automated tasks without making any permanent changes to your power profile or other settings. Hit up the link below to read more and grab a copy. Don’t Sleep is freeware, Windows only. Don’t Sleep [via The Portable Freeware Collection] Latest Features How-To Geek ETC Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 Access the Options for Your Favorite Extensions Easier in Firefox Don’t Sleep Keeps Your Windows Machine Awake DropSpace Syncs Android Files to Dropbox Field of Poppies Wallpaper The History Of Operating Systems [Infographic] DriveSafe.ly Reads Your Text Messages Aloud

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  • Final ever Virtualisation for Developer slidedeck from NxtGenUG Cambridge

    - by Liam Westley
    Thanks to Chris Hay, Allister Frost and the guys from NxtGenUG Cambridge for hosting an evening of virtualisation, and for their secretary Rachel Hawley for sorting out all the dates and details ;-). It was a good turnout so close to Christmas, obviously the bribe of home made mince pies got some people out on a cold wintery December evening.  Big thanks to Allister for driving me to the railway station to ensure I made the 22:29 train, made all the easier by quaffing a couple of very well kept pints of Adnams Broadside in The Punter after the presentation. For those who want the last ever slide decks, they're available here in PDF and PowerPoint format,   http://www.tigernews.co.uk/blog-twickers/nxtgenugcambs/Virt4DevsPdf.zip   http://www.tigernews.co.uk/blog-twickers/nxtgenugcambs/Virt4DevsPowerPoint.zip And a final thanks to all the user groups who have hosted a Virtualisation or Hyper-V talk in the past two years, and gave me a chance to enthuse developers about virtualisation, Dot Net Developers Network, Bristol * (http://www.dotnetdevnet.com/) DeveloperDeveloperDeveloper 7, Reading (DDD7) NxtGenUG, Oxford * (http://www.nxtgenug.net/Region.aspx?RegionID=3) NxtGenUG, Birmingham (http://www.nxtgenug.net/Region.aspx?RegionID=2) DeveloperDeveloperDeveloper Scotland 2, Glasgow (2011 event details) DevEvening, Woking (http://www.devevening.co.uk/) VistaSquad, London (R.I.P. 2010) NxtGenUG, Southampton (http://www.nxtgenug.net/Region.aspx?RegionID=9) GL.Net, Gloucester (http://www.gl-net.org.uk/) NxtGenUG, Manchester (http://www.nxtgenug.net/Region.aspx?RegionID=11) London .NET User Group, London (http://www.dnug.org.uk/) VBUG, Bracknell (http://www.vbug.co.uk/events/default.aspx?region=Reading) NEBytes, Newcastle Upon Tyne (http://www.nebytes.net/) VBUG, London (http://www.vbug.co.uk/events/default.aspx?region=London) NxtGenUG, Hereford (http://www.nxtgenug.net/Region.aspx?RegionID=10) NxtGenUG, Cambridge (http://www.nxtgenug.net/Region.aspx?RegionID=8) * twice, for both Virtualisation for Developers and Hyper-V for Developers Virtualisation for Developers  2008 - 2010 R.I.P. Hyper-V for Developers 2009 - 2010 R.I.P.

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  • How to run developer team meetings?

    - by Bill Iacocca
    Our team of 10 developers meet weekly. The meetings are rather boring and not particularly useful. What format/agenda do you utilize to have good meetings? We meet weekly in the conference room with pizza provided. The format is we go around the room and list the status of various tasks we are working on and discuss tasks for the next week. Managers will provide an overview of upcoming projects and priorities for the coming months and year ahead. Update The goal of these meeting is more or less - general team building, to share the knowledge of what everyone is working on, and to keep everyone aware of shifting company initiatives. It is not to formally 'hand out' work assignments (that is done via other means).

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  • Resources to learn XNA for a professional c# developer

    - by Team-JoKi
    I'm a .net consultant (mainly c#) for my job, but for a while now, I've been interested in making a game in XNA (as a hobby project). I've had a "beginner" course in XNA when I was still a student, but I've lost most of the information (plus, it was VERY beginner, not enough to get you really started). So my question, which resources would be useful for me to learn XNA (books, blogs, websites, tutorials, resource websites - like textures, audio files, etc..)? I know this is a very open question, but I'm thankful for any information.

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  • Project Management, Developer being project managers manager

    - by marabutt
    I am in the planning stages of a project and am looking to hire a project manager. I want be doing some coding and keeping an eye on all parts of the project but feel a project manager will get better results than I could. I can project manage the project and not code and hire another coder or code myself and hire a project manager. I am worried that the project manager will fell impeded by having the project owner as part of the development team. If I run the project, the team might fall apart causing the project to fail. To stick within budget, I have to be involved in one capacity or another. Does anyone have experience with this situation or suggestions?

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