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  • Backing Up User Data when data is not in use. Should I be concerned?

    - by jberryman
    This may be a dumb question. I would like to use duplicity to make backups to Amazon S3 of directories, each of which contains a different user's data. Each directory could be written to at any time. So I have two questions: Should I be concerned that a scheduled backup of a directory might occur in the middle of data being written to files in the directory, resulting in a corrupted backup? And if that is a valid concern, how would I go about temporarily delaying an operation while IO was happening, to try to minimize that effect. Thanks for the advice

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  • Cannot connect Solaris 10 to Windows 7

    - by user999353
    I'm trying to connect a Solaris VM (powered by VMware Player) to Windows Explorer in Windows 7. When I try to map the network drive I get the following: The specified server cannot perform the requested operation. I am using the following URL which has worked on a machine I used before. The only thing that has changed is the IP address of the Solaris machine. I am able to connect to the VM via putty. \\1.2.3.4\xxx\yyy I checked and I think samba is running.. root 375 1 0 09:53:39 ? 0:00 /usr/sfw/sbin/smbd -D root 376 375 0 09:53:40 ? 0:00 /usr/sfw/sbin/smbd –D Anyone any ideas?

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  • E: Sub-process /usr/bin/dpkg returned an error code (100)

    - by user67011
    Hello, I am running on xen, Debian 5.0-i386-default. I haven't touched my vps in 2 months then last night I ran the following command: myserver:/usr/bin# apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: makepasswd The following packages will be upgraded: libc6 libc6-dev libc6-xen libmysqlclient15off locales mysql-client mysql-client-5.0 mysql- common mysql-server mysql-server-5.0 10 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. Need to get 0B/50.1MB of archives. After this operation, 483kB of additional disk space will be used. Do you want to continue [Y/n]? y Preconfiguring packages ... E: Sub-process /usr/bin/dpkg returned an error code (100) I googled and it seems to be a permission thing for "dpkg". However, I cd into /usr/bin and there's no dpkg binary!!! Please help thanks

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  • Apache timeouts and error log

    - by BlackFire27
    I have an error whenever I run my code for a certain time. I use a lot of loops and sql connections. I basically, put and take out links from my database. The problem is that there is some error thrown that I cant see, whenever I execute a long sql operation .. Note that the fault isnt the code. The code runs well, whenever there are a few links involved. But when there are over 200 links.. an error is thrown that I cants see. I tried to trace the error in a few places: C:\Program Files\Zend\ZendServer\logs\php_error.log C:\Program Files\Zend\phpMyAdmin\config.inc.php Edit Viewer in win xp I am running XP: Windows xp php version: 5.3.9-ZS5.6.0. Apache/2.2.21 Apacher version: (Win32) mod_ssl/2.2.21 OpenSSL/0.9.8o I cant trace the error at all, and why it happens. All I can suspect of, is that there is a server timeout..

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  • Unable to get my master & details gridview to work.

    - by Javier
    I'm unable to get this to work. I'm very new at programming and would appreciate any help on this. <%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> protected void Page_Load(object sender, EventArgs e) { } protected void DataGridSqlDataSource_Selecting(object sender, SqlDataSourceSelectingEventArgs e) { } </script> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <asp:SqlDataSource ID="DataGrid2SqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:JobPostings1ConnectionString %>" SelectCommand="SELECT [Jobs_PK], [Position_Title], [Educ_Level], [Grade], [JP_Description], [Job_Status], [Position_ID] FROM [Jobs]" FilterExpression="Jobs_PK='@Jobs_PK'"> <filterparameters> <asp:ControlParameter Name="Jobs_PK" ControlId="GridView1" PropertyName="SelectedValue" /> </filterparameters> </asp:SqlDataSource> <asp:SqlDataSource ID="DataGridSqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:JobPostings1ConnectionString %>" SelectCommand="SELECT [Position_Title], [Jobs_PK] FROM [Jobs]" onselecting="DataGridSqlDataSource_Selecting"> </asp:SqlDataSource> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="Jobs_PK" DataSourceID="DataGridSqlDataSource" AllowPaging="True" AutoGenerateSelectButton="True" SelectedIndex="0" Width="100px"> <Columns> <asp:BoundField DataField="Position_Title" HeaderText="Position_Title" SortExpression="Position_Title" /> <asp:BoundField DataField="Jobs_PK" HeaderText="Jobs_PK" InsertVisible="False" ReadOnly="True" SortExpression="Jobs_PK" /> </Columns> </asp:GridView> <br /> <asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataKeyNames="Jobs_PK" DataSourceID="DataGrid2SqlDataSource" Height="50px" Width="125px"> <Fields> <asp:BoundField DataField="Jobs_PK" HeaderText="Jobs_PK" InsertVisible="False" ReadOnly="True" SortExpression="Jobs_PK" /> <asp:BoundField DataField="Position_Title" HeaderText="Position_Title" SortExpression="Position_Title" /> <asp:BoundField DataField="Educ_Level" HeaderText="Educ_Level" SortExpression="Educ_Level" /> <asp:BoundField DataField="Grade" HeaderText="Grade" SortExpression="Grade" /> <asp:BoundField DataField="JP_Description" HeaderText="JP_Description" SortExpression="JP_Description" /> <asp:BoundField DataField="Job_Status" HeaderText="Job_Status" SortExpression="Job_Status" /> <asp:BoundField DataField="Position_ID" HeaderText="Position_ID" SortExpression="Position_ID" /> </Fields> </asp:DetailsView> </div> </form> </body> error message: Cannot perform '=' operation on System.Int32 and System.String. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.EvaluateException: Cannot perform '=' operation on System.Int32 and System.String.

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  • How can I run fsck on a disk image via Mac Terminal?

    - by mvizual
    I want to run fsck on a disk image before I use it to restore (replace) a corrupted volume. Using Terminal, what would be the proper command, syntax, and options for this operation? I've just recently become acquainted with Terminal and line commands, so syntax and specific options aren't part of my computing vocabulary. I'm using Terminal 2.1.2, bash, OS 10.6.8. Ultimately, I'm trying to restore an image to a secondary startup volume (external drive). The image is mounted on my desktop and I want to check it for errors before I use it. Disk Utility runs "repair disk" successfully but the integrity of the image is suspect.

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  • (How) does deleting open files on Linux and a FAT file system work?

    - by lxgr
    It's clear to me how deleting open files works on filesystems that use inodes - unlink() just decreases the link count to zero, and when the last file handle to the file is closed, the inode will be removed. But how does it work when using a file system that doesn't use inodes, like FAT32, with Linux? Some experiments suggest that deleting open files is still possible (unlike on Windows, where the unlink call wouldn't succeed), but what happens when the file system is uncleanly unmounted? How does Linux mark the files as unlinked, when the file system itself doesn't support such an operation? Is the directory entry just deleted, but retained in memory (that would guarantee deletion after unmounting in any case, but would leave the file system in an inconsistent state), or will the deletion only be marked in memory, and written at the time the last file handle is closed, avoiding possible corruption, but restoring the deleted files after an unclean unmount?

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  • Azure Linux out of band managment

    - by faker
    I have a Linux (Ubuntu) virtual machine running on Azure. It seems like the only way to connect to it is via SSH. This is OK for normal operation, but what to do when something goes wrong (fsck waiting for user-input, new kernel doesn't boot, mis-configured network, etc.)? There is a grayed out "Connect" button in the management interface, and the help for it says: To access a virtual machine running Windows Server, click Connect and follow the instructions. Enter the password that was set when the virtual machine was created. The Connect button is not available for a virtual machine running Linux, but you can use your favorite SSH program to access it. I've read the documentation on the command line tools, but there is also no way to connect to it. Is there any way for me to get such a console?

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  • How to make using command prompt less painful

    - by Adam
    I want to learn to use the command prompt better on Windows to have more control over what I do and just for the learning experience. The main annoyance I have right now is all of the typing. If I want to perform an operation on a file with a large path I'm sitting there typing it out for a minute at least, and if I make a mistake I have to press the up arrow key and scroll through the entire thing and find what I did wrong. Is there any tools to make this easier?

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  • Cannot Access Server from External IP (Router)

    - by mindoftea
    We have an Ubuntu 10.04 LAMP server running on site (Apache is on port 80). It is running fine through the LAN, but I cannot access it using its external IP address through the Netopia 3000 Series modem by which it is connected to the internet. I have tried using what Netopia calls "Pinholes" (Port Forwarding) to make the server accessible, but a telnet to the external address just gives me "connect to address x.x.x.x: Operation timed out." I have also tried enabling "Services" and "IP Passthrough" on the router, but it gives the same result as above. How can I enable the server to be accessed through its external IP address? Because it connects fine locally, it would seem to be a problem with the Netopia router. Update: Booting the server in GUI mode instead of text mode solved the problem instantly. Any ideas why?

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  • Solutions for scheduling cronjob

    - by Shamsul
    I have setup a list of corn, Some of the corn script takes long time like 1-5 hours, and its increasing day by day. I do not want to run two corn script at the same time, its not for the dependency, bu its because my server memory is not that much so that it can not handle two big operation, so i need to find out a solution so that the scheduled scripts will not start until the other previous script no finished. i have 10-15 corn job in the list. and 5 of them i do not want to overlap. Anyone help me find out any solutions?

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  • Songbird very slow, freezes

    - by Cawas
    I've read on few places that Songbird is no good with more than some thousands of library items because it starts getting quite slow. Well, in my case (which is a clean install) I've imported 17k items (which I know is not that much) and instead of becoming just too slow it frequently gets to not responding for several minutes until getting back to its senses again. That's for whichever random operation such as deleting 1 item from library. I've also read on few more places that gives very little hope on fixing this issue, but I wonder... Is there any way to tweak it and make it work as fast as expected? Am I missing something or is the software just not intended for libraries with more than 10 thousand thingies?

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  • Issue with yum hanging. Strace provided

    - by barrrista
    If I do a simple yum update, it hangs and I get the following strace: etsockname(9, {sa_family=AF_INET, sin_port=htons(41169), sin_addr=inet_addr("hiddenip")}, [38654705680]) = 0 close(9) = 0 socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 9 connect(9, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("hiddenip")}, 16) = 0 getsockname(9, {sa_family=AF_INET, sin_port=htons(46910), sin_addr=inet_addr("hiddenip")}, [38654705680]) = 0 close(9) = 0 socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 9 connect(9, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("hiddenip")}, 16) = 0 getsockname(9, {sa_family=AF_INET, sin_port=htons(50917), sin_addr=inet_addr("hiddenip")}, [38654705680]) = 0 close(9) = 0 socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 9 fcntl(9, F_GETFL) = 0x2 (flags O_RDWR) fcntl(9, F_SETFL, O_RDWR|O_NONBLOCK) = 0 connect(9, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("hiddenip")}, 16) = -1 EINPROGRESS (Operation now in progress) select(10, NULL, [9], NULL, {30, 0}

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  • Error configuring virtual hosts with Apache on Windows 8 [on hold]

    - by rushd
    I can't get virtual host to work on my Windows 8. I restart, stop, start Apache, but I get a popup dialog that says: The requested operation has failed! I know it's the line that produces the error, but how can I enable vhost if I don't uncomment the line in httpd.conf? # Virtual hosts Include conf/extra/httpd-vhosts.conf The only thing I did was edited C:\Apache24\conf\httpd.conf by removing the comment on Include conf/extra/httpd-vhosts.conf and edited the file located in C:\Apache24\conf\extra\httpd-vhost.conf. Apache is installed in C:\Apache24 Directory I want to use for Virtual Host is located at C:\Users\TomCODE\brainprojects My vhost.conf looks like this: <VirtualHost *:80> ServerAdmin [email protected] ServerName brain.local DocumentRoot "C:/Users/TomCODE/brainprojects" ErrorLog "logs/brain.local-error.log" CustomLog "logs/local.local-access.log" common </VirtualHost> My hosts file: 127.0.0.1 brain.local I downloaded the file httpd-2.4.9-win64-VC11 from Apache Lounge.

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  • Large OSX 10.6 to Windows 7 smb transfers fail?

    - by user41724
    I'm connecting to a windows 7 box from a OSX 10.6 box via smb: smb://ftp1 Connection works fine, I can transfer individual files one at a time, but as soon as I try and move an entier folder I get the following error: The Finder can’t complete the operation because some data in “test” can’t be read or written. (Error code -36) This error happens on all our OSX boxes when trying to push the entier folder to the Win7 box. The folder TEST in the above error message has -R 777 permissions. I can move every image file to the windows box one by one with no errors. But if I try an move the entier folder. bam error out. This error seems to kill the smb client on the Windows box as well. There's an FTP server on the windows box and I can FTP in from the OSX box and move everything just fine. Not sure what is going on here?

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  • "The server refused the connection" error in Facebook App [closed]

    - by balajimca
    I am working on creating a facebook app for a webstore and listing its contents in facebook app. My server is not https, but facebook app requires https, it showed "Operation timed out" error. So I disabled secured browsing option in facebook and tested in facebook appcentre. After disable secured browsing , the site was worked well till yesterday.But Today, I tried to check the output, It showing this error "The server refused the connection". How can I fix this error. Please look at the screenshot for clarification.

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  • Can I replace a folder with the files it had in it a few hours ago with Time Machine?

    - by 1.21 gigawatts
    I messed up a folder (or the files in that folder) and I want to restore them from a few hours ago. I tried to use Time-Machine to "restore" and it prompts me with where to restore to. I want to restore all files in that directory to the state they were in before. How do I do this? Don't tell me I have to manually replace each file. Edit: It looks like I can restore a folder. The operation can’t be completed because the item “eclipse” is in use.

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  • Notepad++. How to replace diffrent characters with corresponding letters at once?

    - by Algis
    How to find and replace in Notepad++ multiple different characters to corresponding letters at once throughout the text? For example, I have 32 characters that I want to replace. So I have the character like “À”, and I want to replace it with the letter “A”. Next, I have the character like “Æ” and I want to replace it with the letter “?” and so on. Generally, I have 32 such characters and each time I need to do the same operation. Is any way to do this at once? Please view the sample. http://tinypic.com/view.php?pic=34jenv4&s=6 Thanks

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  • XNA: Camera's Rotation and Translation matrices seem to interfere with each other

    - by Danjen
    I've been following the guide here for how to create a custom 2D camera in XNA. It works great, I've implemented it before, but for some reason, the matrix math is throwing me off. public sealed class Camera2D { public Vector2 Origin { get; set; } public Vector2 Position { get; set; } public float Scale { get; set; } public float Rotation { get; set; } } It might be easier to just show you a picture of my problem: http://i.imgur.com/H1l6LEx.png What I want to do is allow the camera to pivot around any given point. Right now, I have the rotations mapped to my shoulder buttons on a gamepad, and if I press them, it should rotate around the point the camera is currently looking at. Then, I use the left stick to move the camera around. The problem is that after it's been rotated, pressing "up" results in it being used relative to the rotation, creating the image above. I understand that matrices have to be applied in a certain order, and that I have to offset the thing to be rotated around the world origin and move it back, but it just won't work! public Matrix GetTransformationMatrix() { Matrix mRotate = Matrix.Identity * Matrix.CreateTranslation(-Origin.X, -Origin.Y, 0.00f) * // Move origin to world center Matrix.CreateRotationZ(MathHelper.ToRadians(Rotation)) * // Apply rotation Matrix.CreateTranslation(+Origin.X, +Origin.Y, 0.00f); // Undo the move operation Matrix mTranslate = Matrix.Identity * Matrix.CreateTranslation(-Position.X, Position.Y, 0.00f); // Apply the actual translation return mRotate * mTranslate; } So to recap, it seems I can have it rotate around an arbitrary point and lose the ability to have "up" move the camera straight up, or I can rotate it around the world origin and have the camera move properly, but not both.

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  • Unable to update the EntitySet because it has a DefiningQuery and no &lt;UpdateFunction&gt; element

    - by Harish Ranganathan
    When working with ADO.NET Entity Data Model, its often common that we generate entity schema for more than a single table from our Database.  With Entity Model generation automated with Visual Studio support, it becomes even tempting to create and work entity models to achieve an object mapping relationship. One of the errors that you might hit while trying to update an entity set either programmatically using context.SaveChanges or while using the automatic insert/update code generated by GridView etc., is “Unable to update the EntitySet <EntityName> because it has a DefiningQuery and no <UpdateFunction> element exists in the <ModificationFunctionMapping> element to support the current operation” While the description is pretty lengthy, the immediate thing that would come to our mind is to open our the entity model generated code and see if you can update it accordingly. However, the first thing to check if that, if the Entity Set is generated from a table, whether the Table defines a primary key.  Most of the times, we create tables with primary keys.  But some reference tables and tables which don’t have a primary key cannot be updated using the context of Entity and hence it would throw this error.  Unless it is a View, in which case, the default model is read-only, most of the times the above error occurs since there is no primary key defined in the table. There are other reasons why this error could popup which I am not going into for the sake of simplicity of the post.  If you find something new, please feel free to share it in comments. Hope this helps. Cheers !!!

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  • SQL SERVER – Generate Report for Index Physical Statistics – SSMS

    - by pinaldave
    Few days ago, I wrote about SQL SERVER – Out of the Box – Activity and Performance Reports from SSSMS (Link). A user asked me a question regarding if we can use similar reports to get the detail about Indexes. Yes, it is possible to do the same. There are similar type of reports are available at Database level, just like those available at the Server Instance level. You can right click on Database name and click Reports. Under Standard Reports, you will find following reports. Disk Usage Disk Usage by Top Tables Disk Usage by Table Disk Usage by Partition Backup and Restore Events All Transactions All Blocking Transactions Top Transactions by Age Top Transactions by Blocked Transactions Count Top Transactions by Locks Count Resource Locking Statistics by Objects Object Execute Statistics Database Consistency history Index Usage Statistics Index Physical Statistics Schema Change history User Statistics Select the Reports with name Index Physical Statistics. Once click, a report containing all the index names along with other information related to index will be visible, e.g. Index Type and number of partitions. One column that caught my interest was Operation Recommended. In some place, it suggested that index needs to be rebuilt. It is also possible to click and expand the column of partitions and see additional details about index as well. DBA and Developers who just want to have idea about how your index is and its physical statistics can use this tool. Click to Enlarge Note: Please note that I will rebuild my indexes just because this report is recommending it. There are many other parameters you need to consider before rebuilding indexes. However, this tool gives you the accurate stats of your index and it can be right away exported to Excel or PDF writing by clicking on the report. Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Index, SQL Optimization, SQL Performance, SQL Query, SQL Server, SQL Server Management Studio, SQL Tips and Tricks, SQL Utility, T SQL, Technology

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  • Employee Info Starter Kit - Visual Studio 2010 and .NET 4.0 Version (4.0.0) Available

    - by joycsharp
    Employee Info Starter Kit is a ASP.NET based web application, which includes very simple user requirements, where we can create, read, update and delete (crud) the employee info of a company. Based on just a database table, it explores and solves all major problems in web development architectural space.  This open source starter kit extensively uses major features available in latest Visual Studio, ASP.NET and Sql Server to make robust, scalable, secured and maintanable web applications quickly and easily. Since it's first release, this starter kit achieved a huge popularity in web developer community and includes 1,40,000+ download from project web site. Visual Studio 2010 and .NET 4.0 came up with lots of exciting features to make software developers life easier.  A new version (v4.0.0) of Employee Info Starter Kit is now available in both MSDN Code Gallery and CodePlex. Chckout the latest version of this starter kit to enjoy cool features available in Visual Studio 2010 and .NET 4.0. [ Release Notes ] Architectural Overview Simple 2 layer architecture (user interface and data access layer) with 1 optional cache layer ASP.NET Web Form based user interface Custom Entity Data Container implemented (with primitive C# types for data fields) Active Record Design Pattern based Data Access Layer, implemented in C# and Entity Framework 4.0 Sql Server Stored Procedure to perform actual CRUD operation Standard infrastructure (architecture, helper utility) for automated integration (bottom up manner) and unit testing Technology UtilizedProgramming Languages/Scripts Browser side: JavaScript Web server side: C# 4.0 Database server side: T-SQL .NET Framework Components .NET 4.0 Entity Framework .NET 4.0 Optional/Named Parameters .NET 4.0 Tuple .NET 3.0+ Extension Method .NET 3.0+ Lambda Expressions .NET 3.0+ Aanonymous Type .NET 3.0+ Query Expressions .NET 3.0+ Automatically Implemented Properties .NET 3.0+ LINQ .NET 2.0 + Partial Classes .NET 2.0 + Generic Type .NET 2.0 + Nullable Type   ASP.NET 3.5+ List View (TBD) ASP.NET 3.5+ Data Pager (TBD) ASP.NET 2.0+ Grid View ASP.NET 2.0+ Form View ASP.NET 2.0+ Skin ASP.NET 2.0+ Theme ASP.NET 2.0+ Master Page ASP.NET 2.0+ Object Data Source ASP.NET 1.0+ Role Based Security Visual Studio Features Visual Studio 2010 CodedUI Test Visual Studio 2010 Layer Diagram Visual Studio 2010 Sequence Diagram Visual Studio 2010 Directed Graph Visual Studio 2005+ Database Unit Test Visual Studio 2005+ Unit Test Visual Studio 2005+ Web Test Visual Studio 2005+ Load Test Sql Server Features Sql Server 2005 Stored Procedure Sql Server 2005 Xml type Sql Server 2005 Paging support

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  • Employee Info Starter Kit - Visual Studio 2010 and .NET 4.0 Version (4.0.0) Available

    - by Mohammad Ashraful Alam
    Employee Info Starter Kit is a ASP.NET based web application, which includes very simple user requirements, where we can create, read, update and delete (crud) the employee info of a company. Based on just a database table, it explores and solves most of the major problems in web development architectural space.  This open source starter kit extensively uses major features available in latest Visual Studio, ASP.NET and Sql Server to make robust, scalable, secured and maintanable web applications quickly and easily. Since it's first release, this starter kit achieved a huge popularity in web developer community and includes 1,40,000+ download from project web site. Visual Studio 2010 and .NET 4.0 came up with lots of exciting features to make software developers life easier.  A new version (v4.0.0) of Employee Info Starter Kit is now available in both MSDN Code Gallery and CodePlex. Chckout the latest version of this starter kit to enjoy cool features available in Visual Studio 2010 and .NET 4.0. [ Release Notes ] Architectural Overview Simple 2 layer architecture (user interface and data access layer) with 1 optional cache layer ASP.NET Web Form based user interface Custom Entity Data Container implemented (with primitive C# types for data fields) Active Record Design Pattern based Data Access Layer, implemented in C# and Entity Framework 4.0 Sql Server Stored Procedure to perform actual CRUD operation Standard infrastructure (architecture, helper utility) for automated integration (bottom up manner) and unit testing Technology UtilizedProgramming Languages/Scripts Browser side: JavaScript Web server side: C# 4.0 Database server side: T-SQL .NET Framework Components .NET 4.0 Entity Framework .NET 4.0 Optional/Named Parameters .NET 4.0 Tuple .NET 3.0+ Extension Method .NET 3.0+ Lambda Expressions .NET 3.0+ Aanonymous Type .NET 3.0+ Query Expressions .NET 3.0+ Automatically Implemented Properties .NET 3.0+ LINQ .NET 2.0 + Partial Classes .NET 2.0 + Generic Type .NET 2.0 + Nullable Type   ASP.NET 3.5+ List View (TBD) ASP.NET 3.5+ Data Pager (TBD) ASP.NET 2.0+ Grid View ASP.NET 2.0+ Form View ASP.NET 2.0+ Skin ASP.NET 2.0+ Theme ASP.NET 2.0+ Master Page ASP.NET 2.0+ Object Data Source ASP.NET 1.0+ Role Based Security Visual Studio Features Visual Studio 2010 CodedUI Test Visual Studio 2010 Layer Diagram Visual Studio 2010 Sequence Diagram Visual Studio 2010 Directed Graph Visual Studio 2005+ Database Unit Test Visual Studio 2005+ Unit Test Visual Studio 2005+ Web Test Visual Studio 2005+ Load Test Sql Server Features Sql Server 2005 Stored Procedure Sql Server 2005 Xml type Sql Server 2005 Paging support

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  • SDL2 sprite batching and texture atlases

    - by jms
    I have been programming a 2D game in C++, using the SDL2 graphics API for rendering. My game concept currently features effects that could result in even tens of thousands of sprites being drawn simultaneously to the screen. I'd like to know what can be done for increasing rendering efficiency if the need arises, preferably using the SDL2 API only. I have previously given a quick look at OpenGL-based 2D rendering, and noticed that SDL2 lacks a command like int SDL_RenderCopyMulti(SDL_Renderer* renderer, SDL_Texture* texture, const SDL_Rect* srcrects, SDL_Rect* dstrects, int count) Which would permit SDL to benefit from two common techniques used for efficient 2D graphics: Texture batching: Sorting sprites by the texture used, and then simultaneously rendering as many sprites that use the same texture as possible, changing only the source area on the texture and the destination area on the render target between sprites. This allows the encapsulation of the whole operation in a single GPU command, reducing the overhead drastically from multiple distinct calls. Texture atlases: Instead of creating one texture for each frame of each animation of each sprite, combining multiple animations and even multiple sprites into a single large texture. This lessens the impact of changing the current texture when switching between sprites, as the correct texture is often ready to be used from the previous draw call. Furthemore the GPU is optimized for handling large textures, in contrast to the many tiny textures typically used for sprites. My question: Would SDL2 still get somewhat faster from any rudimentary sprite sorting or from combining multiple images into one texture thanks to automatic video driver optimizations? If I will encounter performance issues related to 2D rendering in the future, will I be forced to switch to OpenGL for lower level control over the GPU? Edit: Are there any plans to include such functionality in the near future?

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  • PowerShell Script to Deploy Multiple VM on Azure in Parallel #azure #powershell

    - by Marco Russo (SQLBI)
    This blog is usually dedicated to Business Intelligence and SQL Server, but I didn’t found easily on the web simple PowerShell scripts to help me deploying a number of virtual machines on Azure that I use for testing and development. Since I need to deploy, start, stop and remove many virtual machines created from a common image I created (you know, Tabular is not part of the standard images provided by Microsoft…), I wanted to minimize the time required to execute every operation from my Windows Azure PowerShell console (but I suggest you using Windows PowerShell ISE), so I also wanted to fire the commands as soon as possible in parallel, without losing the result in the console. In order to execute multiple commands in parallel, I used the Start-Job cmdlet, and using Get-Job and Receive-Job I wait for job completion and display the messages generated during background command execution. This technique allows me to reduce execution time when I have to deploy, start, stop or remove virtual machines. Please note that a few operations on Azure acquire an exclusive lock and cannot be really executed in parallel, but only one part of their execution time is subject to this lock. Thus, you obtain a better response time also in these scenarios (this is the case of the provisioning of a new VM). Finally, when you remove the VMs you still have the disk containing the virtual machine to remove. This cannot be done just after the VM removal, because you have to wait that the removal operation is completed on Azure. So I wrote a script that you have to run a few minutes after VMs removal and delete disks (and VHD) no longer related to a VM. I just check that the disk were associated to the original image name used to provision the VMs (so I don’t remove other disks deployed by other batches that I might want to preserve). These examples are specific for my scenario, if you need more complex configurations you have to change and adapt the code. But if your need is to create multiple instances of the same VM running in a workgroup, these scripts should be good enough. I prepared the following PowerShell scripts: ProvisionVMs: Provision many VMs in parallel starting from the same image. It creates one service for each VM. RemoveVMs: Remove all the VMs in parallel – it also remove the service created for the VM StartVMs: Starts all the VMs in parallel StopVMs: Stops all the VMs in parallel RemoveOrphanDisks: Remove all the disks no longer used by any VMs. Run this script a few minutes after RemoveVMs script. ProvisionVMs # Name of subscription $SubscriptionName = "Copy the SubscriptionName property you get from Get-AzureSubscription"   # Name of storage account (where VMs will be deployed) $StorageAccount = "Copy the Label property you get from Get-AzureStorageAccount"   function ProvisionVM( [string]$VmName ) {     Start-Job -ArgumentList $VmName {         param($VmName) $Location = "Copy the Location property you get from Get-AzureStorageAccount" $InstanceSize = "A5" # You can use any other instance, such as Large, A6, and so on $AdminUsername = "UserName" # Write the name of the administrator account in the new VM $Password = "Password"      # Write the password of the administrator account in the new VM $Image = "Copy the ImageName property you get from Get-AzureVMImage" # You can list your own images using the following command: # Get-AzureVMImage | Where-Object {$_.PublisherName -eq "User" }         New-AzureVMConfig -Name $VmName -ImageName $Image -InstanceSize $InstanceSize |             Add-AzureProvisioningConfig -Windows -Password $Password -AdminUsername $AdminUsername|             New-AzureVM -Location $Location -ServiceName "$VmName" -Verbose     } }   # Set the proper storage - you might remove this line if you have only one storage in the subscription Set-AzureSubscription -SubscriptionName $SubscriptionName -CurrentStorageAccount $StorageAccount   # Select the subscription - this line is fundamental if you have access to multiple subscription # You might remove this line if you have only one subscription Select-AzureSubscription -SubscriptionName $SubscriptionName   # Every line in the following list provisions one VM using the name specified in the argument # You can change the number of lines - use a unique name for every VM - don't reuse names # already used in other VMs already deployed ProvisionVM "test10" ProvisionVM "test11" ProvisionVM "test12" ProvisionVM "test13" ProvisionVM "test14" ProvisionVM "test15" ProvisionVM "test16" ProvisionVM "test17" ProvisionVM "test18" ProvisionVM "test19" ProvisionVM "test20"   # Wait for all to complete While (Get-Job -State "Running") {     Get-Job -State "Completed" | Receive-Job     Start-Sleep 1 }   # Display output from all jobs Get-Job | Receive-Job   # Cleanup of jobs Remove-Job *   # Displays batch completed echo "Provisioning VM Completed" RemoveVMs # Name of subscription $SubscriptionName = "Copy the SubscriptionName property you get from Get-AzureSubscription"   function RemoveVM( [string]$VmName ) {     Start-Job -ArgumentList $VmName {         param($VmName)         Remove-AzureService -ServiceName $VmName -Force -Verbose     } }   # Select the subscription - this line is fundamental if you have access to multiple subscription # You might remove this line if you have only one subscription Select-AzureSubscription -SubscriptionName $SubscriptionName   # Every line in the following list remove one VM using the name specified in the argument # You can change the number of lines - use a unique name for every VM - don't reuse names # already used in other VMs already deployed RemoveVM "test10" RemoveVM "test11" RemoveVM "test12" RemoveVM "test13" RemoveVM "test14" RemoveVM "test15" RemoveVM "test16" RemoveVM "test17" RemoveVM "test18" RemoveVM "test19" RemoveVM "test20"   # Wait for all to complete While (Get-Job -State "Running") {     Get-Job -State "Completed" | Receive-Job     Start-Sleep 1 }   # Display output from all jobs Get-Job | Receive-Job   # Cleanup Remove-Job *   # Displays batch completed echo "Remove VM Completed" StartVMs # Name of subscription $SubscriptionName = "Copy the SubscriptionName property you get from Get-AzureSubscription"   function StartVM( [string]$VmName ) {     Start-Job -ArgumentList $VmName {         param($VmName)         Start-AzureVM -Name $VmName -ServiceName $VmName -Verbose     } }   # Select the subscription - this line is fundamental if you have access to multiple subscription # You might remove this line if you have only one subscription Select-AzureSubscription -SubscriptionName $SubscriptionName   # Every line in the following list starts one VM using the name specified in the argument # You can change the number of lines - use a unique name for every VM - don't reuse names # already used in other VMs already deployed StartVM "test10" StartVM "test11" StartVM "test11" StartVM "test12" StartVM "test13" StartVM "test14" StartVM "test15" StartVM "test16" StartVM "test17" StartVM "test18" StartVM "test19" StartVM "test20"   # Wait for all to complete While (Get-Job -State "Running") {     Get-Job -State "Completed" | Receive-Job     Start-Sleep 1 }   # Display output from all jobs Get-Job | Receive-Job   # Cleanup Remove-Job *   # Displays batch completed echo "Start VM Completed"   StopVMs # Name of subscription $SubscriptionName = "Copy the SubscriptionName property you get from Get-AzureSubscription"   function StopVM( [string]$VmName ) {     Start-Job -ArgumentList $VmName {         param($VmName)         Stop-AzureVM -Name $VmName -ServiceName $VmName -Verbose -Force     } }   # Select the subscription - this line is fundamental if you have access to multiple subscription # You might remove this line if you have only one subscription Select-AzureSubscription -SubscriptionName $SubscriptionName   # Every line in the following list stops one VM using the name specified in the argument # You can change the number of lines - use a unique name for every VM - don't reuse names # already used in other VMs already deployed StopVM "test10" StopVM "test11" StopVM "test12" StopVM "test13" StopVM "test14" StopVM "test15" StopVM "test16" StopVM "test17" StopVM "test18" StopVM "test19" StopVM "test20"   # Wait for all to complete While (Get-Job -State "Running") {     Get-Job -State "Completed" | Receive-Job     Start-Sleep 1 }   # Display output from all jobs Get-Job | Receive-Job   # Cleanup Remove-Job *   # Displays batch completed echo "Stop VM Completed" RemoveOrphanDisks $Image = "Copy the ImageName property you get from Get-AzureVMImage" # You can list your own images using the following command: # Get-AzureVMImage | Where-Object {$_.PublisherName -eq "User" }   # Remove all orphan disks coming from the image specified in $ImageName Get-AzureDisk |     Where-Object {$_.attachedto -eq $null -and $_.SourceImageName -eq $ImageName} |     Remove-AzureDisk -DeleteVHD -Verbose  

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