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  • Starting a Java activity in Unity3d Android

    - by Matthew Pavlinsky
    I wrote a small Java activity extension of UnityPlayerActivity similar to what is described in the Unity docs. It has a method for displaying a song picking interface using an ACTION_GET_CONTENT intent. I start this activity using startActivityForResult() and it absolutely kills the performance of my Unity game when it is finished, it drops to about .1 FPS afterwords. I've changed removed the onActivityResult function and even tried starting the activity from inside an onKeyDown event in Java to make sure my method of starting the activity from Unity was not the problem. Heres the code in a basic sense: package com.company.product; import com.unity3d.player.UnityPlayerActivity; import com.unity3d.player.UnityPlayer; import android.os.Bundle; import android.util.Log; import android.content.Intent; public class SongPickerActivity extends UnityPlayerActivity { private Intent myIntent; final static int PICK_SONG = 1; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.i("SongPickerActivity", "OnCreate"); myIntent = new Intent(Intent.ACTION_GET_CONTENT); myIntent.setType("audio/*"); } public void Pick() { Log.i("SongPickerActivity", "Pick"); startActivityForResult(myIntent, PICK_SONG); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); } } This is causing me a bit more of a headache than it should and I would be thankful for any sort of advice. Does anyone have any experience with using custom activities in Unity Android or any insight on why this is happening or how to resolve this?

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  • What’s new in Silverlight 4 RC?

    - by pluginbaby
    I am here in Las Vegas for MIX10 where Scott Guthrie announced today the release of Silverlight 4 RC and the Visual Studio 2010 tools. You can now install VS2010 RC!!! As always, downloads links are here: www.silverlight.net He also said that the final version of Silverlight 4 will come next month (so april)! 4 months ago, I wrote a blog post on the new features of Silverlight 4 beta, so… what’s new in the RC ?   Rich Text · RichTextArea renamed to RichTextBox · Text position and selection APIs · “Xaml” property for serializing text content · XAML clipboard format · FlowDirection support on Runs tag · “Format then type” support when dragging controls to the designer · Thai/Vietnamese/Indic support · UI Automation Text pattern   Networking · UploadProgress support (Client stack) · Caching support (Client stack) · Sockets security restrictions removal (Elevated Trust) · Sockets policy file retrieval via HTTP · Accept-Language header   Out of Browser (Elevated Trust) · XAP signing · Silent install and emulation mode · Custom window chrome · Better support for COM Automation · Cancellable shutdown event · Updated security dialogs   Media · Pinned full-screen mode on secondary display · Webcam/Mic configuration preview · More descriptive MediaSourceStream errors · Content & Output protection updates · Updates to H.264 content protection (ClearNAL) · Digital Constraint Token · CGMS-A · Multicast · Graphics card driver validation & revocation   Graphics and Printing · HW accelerated Perspective Transforms · Ability to query page size and printable area · Memory usage and perf improvements   Data · Entity-level validation support of INotifyDataErrorInfo for DataGrid · XPath support for XML   Parser · New architecture enables future innovation · Performance and stability improvements · XmlnsPrefix & XmlnsDefinition attributes · Support setting order-dependent properties   Globalization & Localization · Support for 31 new languages · Arabic, Hebrew and Thai input on Mac · Indic support   More … · Update to DeepZoom code base with HW acceleration · Support for Private mode browsing · Google Chrome support (Windows) · FrameworkElement.Unloaded event · HTML Hosting accessibility · IsoStore perf improvements · Native hosting perf improvements (e.g., Bing Toolbar) · Consistency with Silverlight for Mobile APIs and Tooling · SDK   - System.Numerics.dll   - Dynamic XAP support (MEF)   - Frame/Navigation refresh support   That’s a lot!   You will find more details on the following links: http://timheuer.com/blog/archive/2010/03/15/whats-new-in-silverlight-4-rc-mix10.aspx http://www.davidpoll.com/2010/03/15/new-in-the-silverlight-4-rc-xaml-features/   Technorati Tags: Silverlight

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  • XenServer 5.6.1-fp1. Can't get network working

    - by bakytn
    I have a PC where XenServer 5.6.1 fp-1 has been successfully installed. I've manually set the network settings: 192.168.1.50 255.255.255.0 192.168.1.1 but it's set to xenbr0 iface. While eth0 is empty. When I click on "Configure Management Inteface" it shows that eth0 is connected. But when I ping a default gateway (which is 100% should be accessible) it fails. I used to another shell (Alt+F3) and logged as root. I also failed to ping. with both: ping -I eth0 192.168.1.1 and ping -I xenbr0 192.168.1.1 Be assured that: Cable works Ethernet adapter is 100% functional (prev OS was Ubuntu it was working) There is no firewall rule to deny anything. (everything is allowed)

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  • Restore Files from Backups on Windows Home Server

    - by Mysticgeek
    If you use Windows Home Server to backup the machines on your network, your in luck if you accidentally delete important files or they become corrupted. Today we take a look at getting your data back from backups on your home server. Open Windows Home Server Console and click select the Computers and Backup tab. Right-click on the computer you need to restore files for and select View Backups. This will open a list of your recent backups. Highlight the one you want to open, then click the Open button in the Restore or View Files section. If this is the first time you’re restoring a file, you’ll be asked to verify installation of the device software. Check the box next to Always trust software from Microsoft Corporation and click Install. Now wait while the backup data is retrieved. After the backup data has been retrieved, an explorer windows opens up to drive (Z:) which is the backup data. It’s just like if you were opening a drive on your local machine. Now you can browse through the backup and find the files your missing. You can open the files directly, or drag them onto your machine to the location you want to restore them.   Restoring your data is actually a very easy process with Windows Home Server. Of course you’ll want to make sure the computers on your network are being backed up to WHS. if you need help with that, check out our article on how to configure your computer to backup to WHS. If you want to backup your home server shares, check out our article on how to backup WHS folder to an external drive. Similar Articles Productive Geek Tips GMedia Blog: Setting Up a Windows Home ServerRestore Your PC from Windows Home ServerCreate A Windows Home Server Home Computer Restore DiscInstalling Windows Home ServerConfigure Your Computer to Backup to Windows Home Server TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Make your Joomla & Drupal Sites Mobile with OSMOBI Integrate Twitter and Delicious and Make Life Easier Design Your Web Pages Using the Golden Ratio Worldwide Growth of the Internet How to Find Your Mac Address Use My TextTools to Edit and Organize Text

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  • Enabling 32-Bit Applications on IIS7 (also affects 32-bit oledb or odbc drivers) [Solved]

    - by Humprey Cogay, C|EH
    We just bought a new Web Server, after installing Windows 2008 R2(which is a 64bit OS and IIS7), SQL Server Standard 2008 R2 and IBM Client Access for V5R3 with its Dot Net Data Providers, I tried deploying our new project which is fully functional on an IIS6 Based Web Server, I encountered this Error The 'IBMDA400.DataSource.1' provider is not registered on the local machine. To remove the doubt that I still lack some Software Pre-Requesites or version conflicts  since I encountered some erros while installing my IBM Client Access, I created a Connection Tester which is Windows App that accepts a connection string as a parameter and verifies if that parameter is valid. After entering the Proper Conn String I tried hitting the button and the Test was Succesful. So now I trimmed my suspects to My Web App and IIS7. After Googling around I found this post by a Rakki Muthukumar(Microsoft Developer Support Engineer for ASP.NET and IIS7) http://blogs.msdn.com/b/rakkimk/archive/2007/11/03/iis7-running-32-bit-and-64-bit-asp-net-versions-at-the-same-time-on-different-worker-processes.aspx So I tried scouting on IIS7's management console and found this little tweak under the Application Pool where my App is a member of. After changing this parameter to TRUE Yahoo (although I'm a Google kind of person) the Web App Works .......

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  • Community Launch: Londrina

    - by anobre
    Hoje (20/03/2010) fizemos o evento Community Launch em Londrina. O dia começou às 09:00h com abertura online realizada pela Microsoft (Rodrigo Dias, Fabio Hara e Rogério Cordeiro), apresentando a Copa Microsoft de Talentos, informações sobre o Road Show <LINK> e produtos Microsoft que estarão no foco deste ano. Após a abertura, alguns influenciadores Microsoft da região apresentaram algumas palestras técnicas, mais voltadas a DEV, sobre os assuntos: As Novidades da Plataforma .NET (André Nobre) - Download Entity Framework 4 (Carlos dos Santos) Silverlight 4 (Marcio Althmann) A minha apresentação foi focada em 3 novidades que podem ser aplicadas no dia-a-dia dos participantes, algo bem pontual, envolvendo web forms, paralelismo e Dynamic Language Runtime. O destaque (IMHO) fica para o paralelismo, algo totalmente aplicável nas aplicações, que nos dá um resultado incrível. Apesar de já existir anteriormente, o fato de estar embutido na plataforma incentiva a rápida adoção da tecnologia. Apenas para formalizar, nos próximos dias vamos lançar localmente as reuniões presenciais para discussões técnicas do grupo Sharpcode. Se você tem interesse, e está na região de Londrina, participe! Abraços!

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  • The C++ Standard Template Library as a BDB Database (part 1)

    - by Gregory Burd
    If you've used C++ you undoubtedly have used the Standard Template Libraries. Designed for in-memory management of data and collections of data this is a core aspect of all C++ programs. Berkeley DB is a database library with a variety of APIs designed to ease development, one of those APIs extends and makes use of the STL for persistent, transactional data storage. dbstl is an STL standard compatible API for Berkeley DB. You can make use of Berkeley DB via this API as if you are using C++ STL classes, and still make full use of Berkeley DB features. Being an STL library backed by a database, there are some important and useful features that dbstl can provide, while the C++ STL library can't. The following are a few typical use cases to use the dbstl extensions to the C++ STL for data storage. When data exceeds available physical memory.Berkeley DB dbstl can vastly improve performance when managing a dataset which is larger than available memory. Performance suffers when the data can't reside in memory because the OS is forced to use virtual memory and swap pages of memory to disk. Switching to BDB's dbstl improves performance while allowing you to keep using STL containers. When you need concurrent access to C++ STL containers.Few existing C++ STL implementations support concurrent access (create/read/update/delete) within a container, at best you'll find support for accessing different containers of the same type concurrently. With the Berkeley DB dbstl implementation you can concurrently access your data from multiple threads or processes with confidence in the outcome. When your objects are your database.You want to have object persistence in your application, and store objects in a database, and use the objects across different runs of your application without having to translate them to/from SQL. The dbstl is capable of storing complicated objects, even those not located on a continous chunk of memory space, directly to disk without any unnecessary overhead. These are a few reasons why you should consider using Berkeley DB's C++ STL support for your embedded database application. In the next few blog posts I'll show you a few examples of this approach, it's easy to use and easy to learn.

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  • Problems with wireless file copy - hangs during copy

    - by Eran Kampf
    I have this problem on my home network where when I try to copy files via wireless connection, at some point the copy fails and the machine doing the copy loses connection to the network. I'm pretty much lost as to figuring out the source for the problem... Some more details that might help: It's not OS related. I have Windows 7 machines and Leopard machines and this occurs on both I'm using a 3com OfficeConnect router Wired transfer works fine Other programs that require heavy wireless traffic work just fine:streaming large HD movies, Xbox Live! ... I'm lost as to how to even begin trying to diagnose the problem so any tips are welcome...

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  • Not Playing Nice Together

    - by David Douglass
    One of the things I’ve noticed is that two industry trends are not playing nice together, those trends being multi-core CPUs and massive hard drives.  It’s not a problem if you keep your cores busy with compute intensive work, but for software developers the beauty of multi-core CPUs (along with gobs of RAM and a 64 bit OS) is virtualization.  But when you have only one hard drive (who needs another when it holds 2 TB of data?) you wind up with a serious hard drive bottleneck.  A solid state drive would definitely help, and might even be a complete solution, but the cost is ridiculous.  Two TB of solid state storage will set you back around $7,000!  A spinning 2 TB drive is only $150. I see a couple of solutions for this.  One is the mainframe concept of near and far storage: put the stuff that will be heavily access on a solid state drive and the rest on a spinning drive.  Another solution is multiple spinning drives.  Instead of a single 2 TB drive, get four 500 GB drives.  In total, the four 500 GB drives will cost about $100 more than the single 2 TB drive.  You’ll need to be smart about what drive you place things on so that the load is spread evenly.  Another option, for better performance, would be four 10,000 RPM 300 GB drives, but that would cost about $800 more than the singe 2 TB drive and would deliver only 1.2 TB of space. All pricing based on Microcenter as of March 14, 2010.

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  • Your finger prints may unlock your iPhone and it’s digital wallets

    - by Gopinath
    The next version of iPhone is going to have a biometric sensor which may allow your finger prints to authenticate and authorize – unlock the device, sign in to an account, authorize a credit card transaction, etc . The iOS 7 beta 4 released couple of days ago had many traces of biometric software libraries embedded in the OS and they make it pretty clear that Apple is preparing a new iPhone with finger sensor. Biometric sensors are not something new in digital devices. Most of us have been already using them on your laptops to unlock the computers as well as to launch applications. Though these sensors are available in many devices, they are hardly reliable. My personal laptop has a biometric sensor and half of the time either it does not work or it does not recognize my finger prints. When works, it works like a charm and very easy to unlock my device. But Apple is known for delivering great products by nailing down technical challenges and blending technology with beautiful user interfaces.  They had been doing when Steve Jobs was leading the pack and hope his legacy will be carried forward by Tim Cook by delivering amazing products in coming months.  I expect iPhone finger sensors to work flawlessly. Photo credit: flickr/nettsu

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  • read and write permission for FAT32 partition in Ubuntu

    - by Dean
    This is a strange problem. I have the following partition table Device Boot Start End Blocks Id System /dev/sda1 * 1 13 102400 7 HPFS/NTFS Partition 1 does not end on cylinder boundary. /dev/sda2 13 5737 45978624 7 HPFS/NTFS /dev/sda3 5738 10600 39062047+ 83 Linux /dev/sda4 10601 19457 71143852+ 5 Extended /dev/sda5 10601 11208 4883728+ 82 Linux swap / Solaris /dev/sda6 11209 15033 30720000 b W95 FAT32 /dev/sda7 15033 19457 35537920 7 HPFS/NTFS I dual boot Win7 (sda2) and Ubuntu (sda3) and wanted to use the FAT23 partition to share files across two OS's. I followed some online tutorial and have done these: sudo mkdir /media/FAT32 sudo chmod 777 /media/FAT32 sudo mount /dev/sda6/ /media/FAT32 after I mounted the file, I can only read but not be able to write to it. I checked the file permission, it becomes: drwxr-xr-x but after I unmounted the it then becomes drwxrwxrwx and I can read and write to it. very strange. I don't know where I've down wrong. Cheers.

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  • Why is IaaS important in Azure&hellip;

    - by Steve Loethen
    Three weeks ago, Microsoft released the next phase of Azure.  I have had several clients waiting on this release.  The fact that they have been waiting and are now more receptive to looking at the cloud.  Customers expressed fear of the unknown.  And a fear of lack of control, even when that lack of control also means a huge degree of flexibility to innovate with concerns about the underlying infrastructure.  I think IaaS will be that “gateway drug” to get customers who have been hesitant to take another look at the cloud.  The dialog can change from the cloud being this big scary unknown to a resource for workloads.  The conversations should have always been, and can know be even stronger, geared toward the following points: 1) The cloud is not unicorns and glitter, the cloud is resources.  Compute, storage, db’s, services bus, cache…..  Like many of the resources we have on-premise.  Not magic, just another resource with advantages and obstacles like any other resource. 2) The cloud should be part of the conversation for any new project.  All of the same criteria should be applied, on-premise or off.  Cost, security, reliability, scalability, speed to deploy, cost of licenses, need to customize image, complex workloads.  We have been having these discussions for years when we talk about on-premise projects.  We make decisions on OS’s, Databases, ESB’s, configuration and products based on a myriad of factors.  We use the same factors but now we have a additional set of resources to consider in our process. 3) The cloud is a great solution looking for some interesting problems.  It is our job to recognize the right problems that fit into the cloud, weigh the factors and decide what to do. IaaS makes this discussion easier, offers more choices, and often choices that many enterprises will find more better than PaaS.  Looking forward to helping clients realize the power of the cloud.

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  • ASP.NET Web Server Hardware Configuration

    - by Santa Te Banta
    I'm planning on deploying my ASP.NET Web app in the production environment using a Windows Server 2003 machine. But I know nothing about the CPU brand names and what's best. I know 4 GB RAM, with anything over 3 GHz clock speed will be a good bet and will serve a large number of users. But tell me what's the latest and greatest processor brand-names for running a Windows Server 2003 OS today? And what edition of the Windows 2003 Server do I need out of the following, if I have to run a website to support about 100,000 (a hundred thousand) users, 60% of who are expected to be online at all times? Web Edition Standard Enterprise Datacenter source: http://en.wikipedia.org/wiki/Windows_Server_2003 The article says that the Web edition can only support up to 2 GB of RAM. Will that be sufficient for the above user population?

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  • Force copy files off CRC error filled hard drive

    - by TheLakersHighlights
    So I got a dying Western Digital hard drive here and I have a new Western Digital hard drive to transfer all the data to. I have the new HDD hooked up by a SATA to USB. I want to transfer all the pictures, etc to the new HDD. I am unable to because of the CRC error. I have ran chkdsk /f /r and it didnt work because the drive is just simply dying. What tool will let me bypass CRC and continue on with the copying? OS: Vista Home Prem. 32bit

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  • Install "Massive Coupon"

    - by ffffff
    I'want to install "Massive Coupon" http://github.com/robstyles/Massive-Coupon---Open-source-groupon-clone I've set up apache2 + mod_wsgi + mysql on Ubuntu 9 And written the following settings.py # Django settings for massivecoupon project. import socket, os . . DATABASE_ENGINE = 'mysql' # 'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'. DATABASE_NAME = 'grouponpy' # Or path to database file if using sqlite3. DATABASE_USER = 'grouponpy' # Not used with sqlite3. DATABASE_PASSWORD = 'password' # Not used with sqlite3. DATABASE_HOST = 'localhost' # Set to empty string for localhost. Not used with sqlite3. DATABASE_PORT = '' # Set to empty string for default. Not used with sqlite3. What I have to do additional then?

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  • Reboot loop after sysprep of AD machine

    - by rboarman
    Major screw-up here and I need to find out how much trouble I am in. I have an AD machine that is running Server 2008 R2, hyperv, DHCP and DNS. On the hyperv machine, I have a backup AD instance running along with a handfull of other server 2008 instances. Sysprep was run on the hyperv machine instead of one of the instances. I am attempting to bring the machine back up so I can try a system restore. When I boot the hyperv machine, I get an error that says “Windows could not complete the installation. To install windows on this computer , restart the installation” This message occurs in safe mode, AD restore mode and in last known configuration mode. How can I get my OS to boot at this point? Do I need to reinstall 2008 R2 from scratch?

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  • Magic Mouse for Windows 7 (Touch Mouse)

    - by samsudeen
    Microsoft has unveiled the launch of the new product named “Touch Mouse” at the on going Consumer Electronic show (CES). This mouse allows us to do the normal mouse functions such as  Click, flick, scroll and swipe easily without using any buttons.The features of this mouse is similar to the “Magic Mouse” from Apple hence we can call this as “Microsoft’s Magic Mouse”. This mouse is designed specially for “Windows 7″ to expose the touch features of the OS as per the Microsoft’s below statement Touch Mouse brings a new dimension to Windows 7. By quickly responding to single finger gestures, it speeds up everyday tasks that are already fast in Windows 7: scrolling, panning, paging forward and back, docking, minimizing/ maximizing, showing desktop, and more. Touch Mouse also provides elegant touch functionality to non-touch Windows 7 PCs, so you can enjoy dynamic touch sensitivity at a fraction of the cost of a new PC. The below video clip explains the “Touch Mouse” features using the “Windows 7″ operating system   Touch Mouse This mouse will be launched only in June at an estimated price of $80. You can find more details about the “Touch Mouse” at the below  Microsoft web site. http://www.microsoft.com/hardware/touch-mouse/ This article titled,Magic Mouse for Windows 7 (Touch Mouse), was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Windows Ce 6.0 loses Windows credentials when viewing a web site that's running on Windows 2008 server

    - by gnomixa
    When a user views a web page (with integrated Windows authentication) on WindowsCE 6.0 device, the authentication is lost sporadically. The page being viewed is running on Windows 2008 server. We never had the same issue with Windows 2003 server. The credentials were being asked once and cached for a certain time. My question is: has anything changed in Windows 2008 that doesn't pass the credentials the same way to WindowsCE? The only variable in this scenario is the web server OS - Windows 2003 vs WIndows 2008. Any help would be appreciated, thanks!

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  • Experience with MooseFS?

    - by brown.2179
    Anyone have any experience using MooseFS? I want an easy distributed storage platform to store static data archive of about 10 TB and serve it to 20-40 nodes. Also I want to be able to add storage as the archive grows without having to rebuild the filesystem. I don't care if it's a bit slow. I just want it to be simple and stable. Basically from what I can see for OS X it's between MooseFS and Gluster. Any other suggestions?

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  • The Scoop: Oracle E-Business Suite Support on 64-bit Linux

    - by Terri Noyes
    This article addresses frequently asked questions about Oracle E-Business Suite (EBS) 64-bit Linux support.Q:  Which 64-bit Linux OSs are supported for EBS? A: Beginning with Release 12, we support the following 64-bit operating systems for both application and database tiers on x86-64 servers:Oracle Enterprise Linux Red Hat Enterprise Linux SUSE Linux Enterprise Server For EBS Release 11i (and again in Release 12), when the application tier is installed on a certified platform, additional platforms (including the above) may be used for a 64-bit database tier on x86-64 servers. This is an example of a mixed platform architecture (Release 12), or a Split Configuration (Release 11i). Q:  I understand that the EBS application tier code is 32-bit, even for the 64-bit Linux OS -- is this the case?A: It is true that the majority of executables provided as part of our release media on the application tier are 32-bit (as are the Fusion Middleware libraries and objects they depend on).  However, the 'Planning' products have large memory requirements and therefore are 64-bit compiled to take advantage of the larger memory space afforded by the 64-bit OS'es.

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  • How to scale page size down in Adobe Acrobat X Pro?

    - by WilliamKF
    I scanned a document on a scanner at a friend's house and the pdf ended up being 35 inches by 45 inches in size. I think this the cause of the trouble had for the person I sent it to, they get the error "insufficient image". How can I scale this down in Adobe Acrobat X Pro to a normal 8.5x11 inch sheet so that I can see if that resolves their issue and I can share the document with them. I cannot rescan the document, as I no longer have it. Acrobat is running on Windows 7 OS. The scanner was an HP OfficeJet Pro L7650 All-in-one.

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  • Assistance in setting up new APC Smart-UPS RT on a new VMware enviroment

    - by user38085
    I'm new to the realm of setting up a APC Smart-UPS RT 8000VA UPS with a management network card (AP9618). The project calls for the upgrade of the firmware for the network card to the newest and greatest. It also calls for the Powerchute Business Software to be installed with notifications setup per email for temperature, shutdown, and battery low. I know I'll have to use the serial cable to flash the firmware and install the software on one server 2003 box. Also on that server I'll have to install the software and setup the GUI (IP address) interface. Whats confusing the most is the whole process, and steps to use without taking down the network, which would be very bad. In flashing the firmware does it take down the UPS? Do i have to run BOOTP commands to setup the network card? Also no agents will be used on any of the VWware OS's and no SNMP trap will be used.

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  • grep is inconsistently defaulting to grep -P?

    - by Sammitch
    I have a script that does some housekeeping that works perfectly well when invoked from an interactive shell, but did nothing when invoked by cron. To troubleshoot this I started a shell with a 'blank' environment with the command: env -i /bin/bash --noprofile --norc Using this blank env I've dug into my script and found that the following grep will not match any files: grep -il "^ws_status\s*=\s*[\"']remove[\"']$" However, when run from an interactive shell the command will return the filenames of the matching files. As a note, the expression is matching lines like: WS_STATUS = "remove" Through trial-and-error I discovered that adding -P to the options [Perl regex] the command started working normally in the 'blank' shell. However, I have no idea why my login shell appears to be defaulted to grep -P. There is only one grep binary, /bin/grep There are no aliases defined for grep=pgrep or grep="grep -P" There is no env variable GREP_OPTIONS defined. What's the deal here? Note: OS is RHEL v5.10, Bash is v3.2.25, grep is v2.5.1

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  • How to install Snow Leopard Server over Regular Snow Leopard

    - by SeniorShizzle
    I'm in the ADC so I have legitimate access to a free copy of Snow Leopard Server and licence key which I need to use to test my Push Notifications. I downloaded the software, and when I opened the .dmg I saw "Click to install Snow Leopard Server" which I did, and then it prompted me to restart the computer to begin installation. When the computer restarted, however, it just booted into my regular OS X partition. I kept trying to no avail. Obviously I'm missing something stupid here but I'm not a server admin so I don't know what to do :) The dmg is almost 6GB so I can't burn a DVD of it. I really need your help! Thanks guys!

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  • Is recursion really bad?

    - by dotneteer
    After my previous post about the stack space, it appears that there is perception from the feedback that recursion is bad and we should avoid deep recursion. After writing a compiler, I know that the modern computer and compiler are complex enough and one cannot automatically assume that a hand crafted code would out-perform the compiler optimization. The only way is to do some prototype to find out. So why recursive code may not perform as well? Compilers place frames on a stack. In additional to arguments and local variables, compiles also need to place frame and program pointers on the frame, resulting in overheads. So why hand-crafted code may not performance as well? The stack used by a compiler is a simpler data structure and can grow and shrink cleanly. To replace recursion with out own stack, our stack is allocated in the heap that is far more complicated to manage. There could be overhead as well if the compiler needs to mark objects for garbage collection. Compiler also needs to worry about the memory fragmentation. Then there is additional complexity: CPUs have registers and multiple levels of cache. Register access is a few times faster than in-CPU cache access and is a few 10s times than on-board memory access. So it is up to the OS and compiler to maximize the use of register and in-CPU cache. For my particular problem, I did an experiment to rewrite my c# version of recursive code with a loop and stack approach. So here are the outcomes of the two approaches:   Recursive call Loop and Stack Lines of code for the algorithm 17 46 Speed Baseline 3% faster Readability Clean Far more complex So at the end, I was able to achieve 3% better performance with other drawbacks. My message is never assuming your sophisticated approach would automatically work out better than a simpler approach with a modern computer and compiler. Gage carefully before committing to a more complex approach.

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