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  • What hardware factors may be considered bottlenecks on a Hyper-V virtual server during load testing?

    - by sean
    Our organization is load testing our application using virtual servers via Hyper-V to see what the user load can be using fair equipment on a single box setup. The developer group questioned the validity of the tests given the normal use of the box by the other virtual machines. IT admins answered that it is an acceptable platform to load test on because it has its own CPUs, memory and disks allocated. Is their answer mostly correct? What hardware factors may be considered bottle necks given the other virtual machines when testing our application? For example, would bus speed be a concern or network IO? The application consists of a windows service written using the 4.0 .NET Framework and SQL Server 2008 R2.

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  • How is it possible to list all folders that a particular user/group has permissions on?

    - by Lord Torgamus
    Is it possible to list all folders/files that a given group has explicit permissions on, for a machine running Windows Server 2003? If so, how? It would be nice to see inherited permissions as well, but I could do with just explicit permissions. A little background: I'm trying to update groups/permissions on a test server. One of the groups, Devs, wasn't implemented correctly when it was created, and my goal is to remove it from the system. It has been replaced by LeadDevelopers, which has permissions on many — but naturally not all — of the same folders. I want to make sure that I don't accidentally orphan any folders or cause any other issues when I remove Devs. It did have some admin-level permissions.

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  • Microsoft SQL Server Management Studio not working after installing .Net Framework 4

    - by smith watson
    Yesterday I installed .Net Framework 4 as it was required by Liquid XML Studio, but just after installing it, My SQL Server Management Studio stopped working. As soon as open the IDE I get package microsoft sql management studio package failed to load I tried pretty much all the solution posted on the internet but could not get it working, today when I removed the .Net Framework 4, SQL server management studio started working again. Then just to test, I installed the .Net Framework 4 back ... and I started getting the same problem in management studio. I want both on my machine ! how can i do it ? PS : OS is Windows 7

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  • Setup local EC2 style cloud?

    - by John Kramlich
    I was recently given 3 dual opteron 2400 servers with 4GB of RAM and 120GB hard drives. I am interested in setting up something similar to Amazon's EC2 for my own personal web development use. Basically, I would like to spin up instances from an ISO or other disk images and have them available to test and develop software. Are there open source solutions I can use to accomplish this? I am assuming one of the machines will need to act as a controller of some sort for the other two. I use Sun's VirtualBox on my local development machine to virtualize various versions of Microsoft Windows. However, I'm not sure if that's the best tool for what I am trying to achieve. I apologize in advance if this question is to vague to get meaningful responses. I am new to cloud computing and fairly new at server administration.

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  • How to ask Debian not to check last mount time of its file system?

    - by Landy
    I'm using Debian 6.0.5. To test a feature of my product, I need to modify the system date&time back and forth frequently. Once a time I set the system date back to one month ago, then I reboot the system, and it reported the last mount time of the file system is in the future and enter the maintenance mode automatically. I had to run the fsck to make sure the file system is not broken to boot into Debian. Is there any way to ask Debian stop checking the last mount time of its file system when booting? Thanks.

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  • PPT Leveraging Azure for Performance Testing

    - by Tarun Arora
    I have recently presented a session on “How you can leverage Azure for Performance Testing” your application.  It goes without saying that performance testing your application not only gives you the confidence that the application will work under heavy levels of stress but also gives you the ability to test how scalable the architecture of your application is. It is important to know how much is too much for your application! Working with various clients in the industry I have realized that the biggest barrier in Load Testing & Performance Testing adoption is the high infrastructure and administration cost that comes with this phase of testing. In the session I tried to demonstrate how you can use the power of Windows Azure to effectively abstract the administration cost of infrastructure management and lower the total cost of Load & Performance Testing. You can view the session presentation here, http://www.slideshare.net/aroratarun/leveraging-azure-for-performance-testing  I’ll be adding a video on this subject shortly… If you have any feedback or further suggestions to add to the goodness of this solution please get in touch.

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  • How to accelerate and notice failure of potentially faulty disks

    - by rainier
    Hey, I got a bunch of 'used' servers, whose disks should have been checked, but they have been shipped around the county in crate which can't help. I just had one disk go bad (despite being mirrored, currently trying to get more details). The server was fine for about a week before everything ground to a halt this afternoon. Is there any way 'accelerate' the failure of faulty disks, with the goal of bringing the disk to failure before we launch production services? Would doing lots of I/O with 'dd' or 'iozone' be a good way to test these potentially faulty disks? Any other tests/tools that would help recognized failures before they happen?

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  • ms access template where to find the vb code

    - by tintincute
    Hi I'm very new to this ms access 2007. I have a copy of a charitable contribution template charitablecontributions.accdb. I would like to know where I can find the code of it? I opened it by holding down the shift button and double click on it and it will open to a normal ms access where you can modify the table and so. But when I just click the file: charitablecontributions.accdb it will open to a formular view where the ribbon bars are gone. I wanted to know how, how is it possible to have this formular view? Because I have a Test.mdb from 2003 and I also would like it to be open like the formular view of charitablecontributions.accdb. I'll appreciate your help. Thanks

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  • Does it make sense to write tests for legacy code when there is no time for a complete refactoring?

    - by is4
    I usually try to follow the advice of the book Working Effectively with Legacy Code. I break dependencies, move parts of the code to @VisibleForTesting public static methods and to new classes to make the code (or at least some part of it) testable. And I write tests to make sure that I don't break anything when I'm modifying or adding new functions. A colleague says that I shouldn't do this. His reasoning: The original code might not work properly in the first place. And writing tests for it makes future fixes and modifications harder since devs have to understand and modify the tests too. If it's GUI code with some logic (~12 lines, 2-3 if/else block, for example), a test isn't worth the trouble since the code is too trivial to begin with. Similar bad patterns could exist in other parts of the codebase, too (which I haven't seen yet, I'm rather new); it will be easier to clean them all up in one big refactoring. Extracting out logic could undermine this future possibility. Should I avoid extracting out testable parts and writing tests if we don't have time for complete refactoring? Is there any disadvantage to this that I should consider?

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  • At the end of my rope

    - by hvgotcodes
    I am a contractor to a big company. Currently, there are three developers on the project, myself included. The problem is the other 2 developers don't really get it. By "it" i mean the following: They don't understand the best practices for the technology we are using. After 6 months of me and others giving them examples there are terrible anti-patterns being used. They are "copy and paste" programmers that produce primarily spaghetti code. They constantly break things, implementing changes but not doing a basic smoke test to see if all is good They refuse/rarely to ask for code-reviews. They refuse/rarely even do basic things like formatting code. No documentation on any classes (jsdocs) Afraid to delete code that doesn't do anything Leave commented code blocks everywhere even though we have version control. I find myself getting more and more frustrated as I format others code, fix bugs, discover functionality that is broken, and create abstractions to remove the spaghetti. I really don't know what to do. I try not to get to frustrated, but it's just a mess. I like these people as people, but I feel like the coding situation is so bad that I could move faster if they simply browsed the web all day. Would it be out of line to ask our manager to review the others svn commit access; commits can only be done after a review by someone who is knowledgeable in what we are doing? As a contractor, I'm not sure if that's the best move. Is there a subtle/not so subtle way of making it clear how many things I am fixing?

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  • PHP 5.2.13 doesn't work on Windows 7 on apache 2.2

    - by Sinan
    I have a test server on a Windows 7 Machine with apache 2.2 installed. On it PHP 5.2.11 was workig fine (as a module). But when I try to install 5.2.13 (or greater). It doesn't start. Nothing beside the PHP version is different. I unzip the files and add the lines. LoadModule php5_module "c:/PHP/php5apache2_2.dll" AddType application/x-httpd-php .php PHPIniDir "c:/PHP" But that LoadModule directive doesn't let apache start. When I comment that line apache starts. When I replace the files with those in 5.2.11 package Everything works fine again. Does anyone have any ideas?

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  • mySQL sphinx Index location on Ubuntu

    - by Marcus Morris
    I am trying to test out a Sphinx cookbook, but I need a database to do so. I have created the database locally, but I need to know where the default path is for the index of the table I created. This is the error I am currently getting when trying to run sphinx because the path to the index is wrong: WARNING: index 'phoneindex': preload: failed to open /var/lib/mysql/mysql.sph: No such file or directory; NOT SERVING FATAL: no valid indexes to serve Where can I find mysql.sph? Or how/when is that file created? Thanks!

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  • One bigger Virtual Machine distributed across many Nodes [on hold]

    - by flyer
    I just setup virtual machines on one hardware with Vagrant (this is just a test environment, not production!). I want to use a Puppet to configure them and next try to setup OpenStack. I am not sure If I am understanding how this should look at the end. Is it possible to have below architecture with OpenStack after all where I will run one Virtual Machine with Linux? ------------------------------- | VM | ------------------------------- | NOVA | NOVA | NOVA | ------------------------------- | OpenStack | ------------------------------- | Node | Node | Node | ------------------------------- (In my environment Nodes are just virtual machines, but my question concerns separate Hardware nodes) After some comments... Is it a language barrier, or? This is only my 'virtual environment'. If we imagine this virtual machines are a separate Nodes (e.g. every has 4 cores) the OpenStack is still the same, right? Can I run one Virtual Machine across many Nodes with OpenStack? Is it possible to aggregate the computation power of separate machines in one virtual distributed operating system?

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  • MySQL documentation writer for MEM and Replication wanted!

    - by stefanhinz
    As MySQL is thriving and growing, we're looking for an experienced technical writer located in the UK or Ireland to join the MySQL documentation team. For this job, we need the best and most dedicated people around. You will be part of a geographically distributed documentation team responsible for the technical documentation of all MySQL products. Team members are expected to work independently, requiring discipline and excellent time-management skills as well as the technical facilities and experience to communicate across the Internet. Candidates should be prepared to work intensively with our engineers and support personnel. The overall team is highly distributed across different geographies and time zones. Our source format is DocBook XML. We're not just writing documentation, but also handling publication. This means you should be familiar with DocBook, and willing to learn our publication infrastructure. Your areas of responsibility would initially be MySQL Enterprise Monitor, and MySQL Replication. This means you should be familiar with MySQL in general, and preferably also with the MySQL Enterprise offerings. A MySQL certification will be considered an advantage. Other qualifications you should have: Native English speaker 5 or more years previous experience in writing software documentation Familiarity with distributed working environments and versioning systems such as SVN Comfortable with working on multiple operating systems, particularly Windows, Mac OS X, and Linux Ability to administer own workstations and test environment Excellent written and oral communication skills Ability to provide (online) samples of your work, e.g. books or articles If you're interested, contact me under [email protected]. For reference, the job offer can be viewed here.

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  • Can Ping but Cannot Telnet directly to SQL Server 2012 Cluster Nodes

    - by tresstylez
    We have a monitoring tool (Solarwinds Orion) that needs to connect to a 2-node failover SQL Server Cluster. For reasons outside of our control -- we cannot monitor the CLUSTER IP directly at this time, so we have fallen back to monitoring each cluster node IP directly. This is not working. Upon troubleshooting, we tried to test that the cluster node was listening on the proper (fixed) port by using telnet to the cluster node IP/port -- and the telnet failed. However, telnet'ing to the Cluster IP/Port was SUCCESSFUL! Each node has its own IP. Each node is listening on the identical FIXED port. Each node has Dynamic Ports disabled. Each node can be PINGED successfully from the monitoring tool. Windows Firewall is DISABLED. How can I troubleshoot why I cannot telnet to the listening port on the cluster nodes?

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  • Verifying Time Machine backups

    - by jtimberman
    I'm preparing my system for a Snow Leopard upgrade, and I prepare for the worst case scenario: full reinstall and restore. I would like to verify that my Time Machine backups are valid, and will restore correctly. My Time Machine backups go to a Linux server running Netatalk, and the backups complete successfully. How do I do a test restore to an alternative location, or otherwise verify my data without overwriting any existing files? Do I need to save anything in particular externally to make sure I can access the backups if I have to reinstall from scratch?

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  • What are good and bad jitter times for a LAN

    - by garyb32234234
    Ive just ran jperf (frontend to iperf) on our network between 2 workstations, its recorded jitter between 0.033ms and 0.048ms. Is this good or bad? Are there more variables that i would need to consider to make the decision? EDIT: TCP/IP Ethernet LAN 43 PCs 1 server, 100Mbits main switch, various small 8 port switches, test was done using UDP, Its a Windows Domain. I want to instal a few voip softphones on the workstations, see how many i can use that reliably work, im testing a few different workstations around the network to see where the best quality network paths are. Will also change some equipment if i identify bad connections.

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  • Blogger Blog Takes Ages to Load after Custom Domain Redirection

    - by abhisek
    I recently bought a custom domain for a blogger blog (technabled.com) I have for sometime now. I followed the instructions on blogger's documentation. I added A-name records and CNAME records with my DNS provider. But, now, some strange problems are cropping up. If I connect to my broadband network and then ping technabled.com, it times out. Then, if I visit the webpage, which takes almost one and half minutes to load, and then if I ping technabled.com, it shows expected result. This is not just me. I asked some of the regular readers, who reported the same issue. As a result of this, I am losing a lot of visits. What is stranger is that the subsequent visits to the blog is faster. I have checked with a few online services to test the performance. WebPageTest seems to say the same thing: http://www.webpagetest.org/result/110117_1N_7PE/ (please see the First View / Repeat View time) Also, the pagespeed score is not that bad. So I am ruling out other possibilities. I am at a loss as to what I should do to find a solution. Help is much appreciated. :)

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  • PHP + IIS7 + X64 OS (Windows 7 or Server 2008)

    - by Eric
    I'm going to answer my own question here, but I thought this might be important enough to post so that it would be indexed for the next person who runs into my situation. Problem: I can not seem to get PHP code to execute on a x64 bit version ofIIS7, whether it be in my desktop, Windows 7, or the application's final destination on Windows Server 2008. Every time I try and look at a test php document to confirm installation, I only see the source code. I've followed the documentation from PHP, from iis.net, blogs, howtos, just about anywhere I can find that Google would send me. I tried the web installer, tried manual installations instead of the MSI, tried version 5.3.5, tried version 5.2.17, but no matter what, the code would never execute. I even tried registering .eric files with PHP FastCGI Module, but same result, php source code only.

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  • Halloween: Season for Java Embedded Internet of Spooky Things (IoST) (Part 3)

    - by hinkmond
    So, let's now connect the parts together to make a Java Embedded ghost sensor using a Raspberry Pi. Grab your JFET transistor, LED light, wires, and breadboard and follow the connections on this diagram. The JFET transistor plugs into the breadboard with the flat part facing left. Then, plug in a wire to the same breadboard hole row as the top JFET lead (green in the diagram) and keep it unconnected to act as an antenna. Then, connect a wire (red) from the middle lead of the JFET transistor to Pin 1 on your RPi GPIO header. And, connect another wire (blue) from the lower lead of the JFET transistor to Pin 25 on your RPi GPIO header, then connect another (blue) wire from the lower lead of the JFET transistor to the long end of a common cathode LED, and finally connect the short end of the LED with a wire (black) to Pin 6 (ground) of the RPi GPIO header. That's it. Easy. Now test it. See: Ghost Sensor Testing Here's a video of me testing the Ghost Sensor circuit on my Raspberry Pi. We'll cover the Java SE app needed to record the ghost analytics in the next post. Hinkmond

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  • Nameserver Problem

    - by Ruel
    I installed Virtualmin GPL with BIND, etc. I created a virtual host for my main domain, and edited the zone file, added the A records for the nameservers ns1.mydomain.com and ns2.mydomain.com. All looks good from the VPS, whenever I do a dig or nslookup, all seems fine, returning correct details. But when I test externally, there are no results. I tried several sites such as intodns, etc. It says my nameservers doesn't point to any IP. I have registered my nameservers with the appropriate IP in my registrar, and I even contacted support to verify this, and they told me that the registration was successful, but when they dig my nameservers, there's no ip address. I can also connect to my server IP's port 53. Also, I know that the DNS propagation is 24-48 hours. But there has to be some server that can return the correct results by now. Please lead me to the right direction, thanks.

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  • Duplicate name exists solution

    - by user978733
    I have about 70 pc's with exactly same hardware. I decided to automate turning on and off. I took 1 PC. Here is what I've done: Changed bios configuration so that now pc's waking when I turn on AC switch Installed Windows XP and configured so that I can turn off remotelly, changed workgroup name to "WG1", and pc name to "ExamPC" Then created acronis backup image of this pc I installed this image in several PC's and tried to test All worked well till windows opened. The problem is, all tested PC's started Windows nearly at the same time, and all of them popped up error Duplicate name exist. I can't figure out any solution. Any suggestions?

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  • Zip files way larger on a Mac using Finder than the 'zip' command.. 2x larger.

    - by user33947
    I have a directory of JPEG's. Each one is roughly 90k, as reported by Photoshop when saving, and also reported by the command line function 'ls'.. When I get the properties for the file with Finder, it's double that, over 220k. Zipping it with finder will also package this bulk as well. Doing the "zip -v test.zip ./dir" command will make a MUCH smaller zip file. Zipping the files on windows also results in a much smaller file size as well, roughly the same to that of the unix zip command. File sizes are also reported correctly on windows. I can't find any mention of this anywhere, so I'm asking here.

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  • mysql error code 13 on windows xampp caused by lower case table names = 0

    - by user127379
    I can import an sql (from test linux server mysql) file if the lower case setting is removed. But then the table names are lower case and the web site doesn't work. Originally it was working (my.ini with the lower case settings), I then exported to a linux server, it was working there. Now importing back to my windows (xampp setup) fails. After wild goose chase looking at disks and permissions, I found that if I remove the lower_case_table_names=0, the import works! But I need the case sensitive command so that I can deploy on the linux server.

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  • Changing size of window when testing Adobe AIR mobile applications

    - by Peter
    Im making a mobile phone Android application in Flash CS 5.5. I set the width/height of the stage to 480/800 px. When I hit CTRL+ENTER to test run the application I get a window that is 480/800 px. It cannot be resized. I want to change the size of that window WITHOUT changing the stage width/height. For example if I run the APK on a mobile phone with a 1000x1000 display the flash will scale automatically to fit the 480/800 stage to the 1000x1000 screen. So it should be possible to change the window size to 1000x1000 without having to change the stage width/height. But how?

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