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  • Ubuntu 12.04 does not suspend with proprietary driver for Radeon 6800

    - by Mike
    I'm running Ubuntu 12.04 x86_64 (though these issues have existed in previous releases too) and have a Radeon 6800 graphics card. I've run into issues with the open-source driver (the system would randomly hang when shutting down) so I switched to the proprietary driver (I compiled it myself using these instructions), but I am having new problems now. The main issue is that when I go into sleep mode, about 50-75% of the time, the screen goes black but the monitor does not actually shut off, and I can hear that the fans/hard drive are not suspending either. I can't get the computer to wake up (Ctrl+Alt+F1,2,3,etc. does not work), and I always end up force shutting down with the power button. I'd really appreciate help! Here is some information that might be helpful: $ fglrxinfo display: :0 screen: 0 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: AMD Radeon HD 6800 Series OpenGL version string: 4.2.11631 Compatibility Profile Context $ dmesg | grep fglrx [...] [ 6.718606] [fglrx] module loaded - fglrx 8.96.4 [Apr 5 2012] with 1 minors [...]

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  • What is the advantage to using a factor of 1024 instead of 1000 for disk size units?

    - by Joe Z.
    When considering the disk space of a storage medium, normally the computer or operating system will represent it in terms of powers of 1024 - a kilobyte is 1,024 bytes, a megabyte is 1,048,576 bytes, a gigabyte is 1,073,741,824 bytes, and so on. But I don't see any practical reason why this convention was adopted. Usually when disk size is represented in kilo-, mega-, or giga-bytes, it has to be converted into decimal first. In places where a power-of-two byte count actually matters (like the block size on a file system), the size is given in bytes anyway (e.g. 4096 bytes). Was it just a little aesthetic novelty that computer makers decided to adopt, but storage medium vendors decided to disregard? Whenever you buy a hard drive, there's always a disclaimer nowadays that says "One gigabyte means one billion bytes". It would feel like using the binary definition of "gigabyte" would artificially inflate the byte count of a device, making drive-makers have to pack 1.1 terabytes into a drive in order to have it show up as "1 TB", or to simply pack 1 terabyte in and have it show up as "931 GB" (and most of them do the latter). Some people have decided to use units like "KiB" or "MiB" in favour of "KB" and "MB" in order to distinguish the two. But is there any merit to the binary prefixes in the first place? There's probably a bit of old history I'm not aware of on this topic, and if there is, I'm looking for somebody to explain it. (Apologies if this is in the wrong place. I felt that a question on best practice might belong here, but I have faith that it will be migrated to the right place if it's incorrect.)

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  • Making a game with responsive resolution

    - by alexandervrs
    I am making a game, however I wish for it to be resolution agnostic. My target resolution i.e. where things look as intended is 1600 x 900. My ideas are: Make the HUD stay fixed to the sides no matter what resolution, use different size for HUD graphics under a certain resolution and another under a certain large one. Use large HD sprites/backgrounds which are a power of 2, so they scale nicely. Use the player's native resolution. Scale the game area (not the HUD) to fit (resulting zooming in some and cropping the game area sides if necessary for widescreen, no stretch), but always fill the screen. Have a min and max resolution limit for small and very large displays where you will just change the resolution(?) or scale up/down to fit. What I am a bit confused though is what math formula I would use to scale the game area correctly based on the resolution no matter the aspect ratio, fully fit in a square screen and with some clip to the sides for widescreen. Pseudocode would help as well. :)

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  • Cannot establish Wired connection on Acer Aspire 5930G

    - by drakos46
    I use an Acer Aspire 5930G, dual booted with Windows 7 and Ubuntu 13.10. My problem is that i cannot establish wired connection on my ubuntu. Wireless connection works in both of my OSs but the Wired connection does not, only on the Ubuntu. I have already tried the common fix: echo on | sudo tee /sys/class/net/eth0/device/power/control but without any results. Any ideas? eth0 Link encap:Ethernet HWaddr 00:1d:72:c2:21:a5 inet6 addr: fe80::21d:72ff:fec2:21a5/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:945 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:204318 (204.3 KB) Interrupt:16 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:7241 errors:0 dropped:0 overruns:0 frame:0 TX packets:7241 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:645874 (645.8 KB) TX bytes:645874 (645.8 KB) wlan0 Link encap:Ethernet HWaddr 00:16:ea:57:7b:cc inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::216:eaff:fe57:7bcc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:19937 errors:0 dropped:0 overruns:0 frame:0 TX packets:16933 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:10877245 (10.8 MB) TX bytes:3131378 (3.1 MB) 02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8071 PCI-E Gigabit Ethernet Controller (rev 16)

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  • More on Oracle OpenWorld 2012

    - by Maria Colgan
    With only two weeks to go until Oracle OpenWorld, it is time to start planning your schedule. Every year folks ask me what Optimizer related sessions they should go and see at OpenWorld. Below are my top two picks for each day of the conference, to get your schedule started. Sunday, September 30th at 9am Beginning performance tuning Session UGF 3320 in Moscone West, room 2022 Sunday September 30th at 12:30pm Ten Surprising Performance Tactics Session UGF10426 in Moscone West, room 2016 Monday October 1st at 12:15pm The Evolution of Histograms in Oracle Database Session CON2803 in Moscone south, room 302 Monday October 1st at 1:45pm A Day in the Life of a Real-World Performance Engineer Session CON8404 in Moscone south, room 303 Tuesday October 2nd at 11:45am Oracle Partitioning: It’s Getting Even Better Session CON8321 in Moscone South, room 101 Tuesday October 2nd at 1:15pm Oracle Optimizer: Harnessing the Power of Optimizer Hints  Session CON8455 in Moscone South, room 103 Wednesday October 3rd at 3:30pm SQL Plan Stability: Post 11g Upgrade—Verizon Wireless’ Experience Session CON4485 in Moscone South, room 302 Wednesday October 3rd at 5pm Five SQL and PL/SQL Things in the Latest Generation of Database Technology Session CON8432 Moscone South, room 103 Thursday, October 4th at 11:15pm How the Query Optimizer Learns from Its Mistakes  Session CON3330 in Moscone west, room 3016 Thursday, October 4th at 12:45pm Oracle Optimizer: An Insider’s View of How the Optimizer Works Session CON8457 in Moscone South, room 104 Don't forget to pickup an Optimizer bumper sticker at the Optimizer demo booth. This year we are located in booth 3157, in the Database area of the demogrounds, in Moscone South. Members of the Optimizer development team will be there Monday through Wednesday from 9:45 am until 6pm.

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  • Simple NAS setup for Ubuntu

    - by Sean Houlihane
    So, I want to connect my shiny new NAS (QNAP TS-210p II) to my Ubuntu 11.10 box. I have a 2nd Ubuntu machine, but I don't use that enough to be too worried about it. Use is ideally to offload all storage except for system (which can then run off a 30GB flash drive). The main machine also runs Myth front/backends. Both are on a wired network currently. I have got a basic setup working, mounted over NFS, but have some issues, and whenever I look for answers, I seem to get unto the UbuntuServer domain, with what seems like more detail than I want in an answer. Questions I have identified so far: 1) Sharing UIDs to get file permissions correct. LDAP or something else? What is necessary to make this work? 2) Mounting an NFS device reliably. Do I just add it in fstab or is some sort of auto-mount advisable? Its a wired network, but I shouldn't need to worry about reboot after power-outages and sequencing...

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  • Unable to remove the lock by normal means

    - by Loki
    I've been installing ubuntu restricted extras via the software center. Everything was going well at first, but then the installation process froze on 'applying changes' stage. I've had this in the past already, and usually just hitting the 'cancel' button helped, but not this time. Obviously, the install process has placed a lock, and I couldn't issue any apt-get commands. then i've tried doing what was suggested here Fixing Could not get lock /var/lib/dpkg/lock : sudo fuser -cuk /var/lib/dpkg/lock; sudo rm -f /var/lib/dpkg/lock but it seemed to me that it has only killed my X server. Okay, i've just pressed the power button on my PC, and restarted, hoping that the lock was finally off and i could reinstall the stuff. No dice. when I open the software center, I still have one operation in process, a weird one: " Searching | Cancelling ". The 'cancel' button is either inactive, or it just does nothing. So I've become desperate and decided to write here. How do I fix the problem? Can't install anything on a fresh ubuntu 12.04 :) Thanks in advance

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  • Can't install Ubuntu, black screen after install

    - by Tyrone
    I tried several times, but wasn't able to make it work. I tried all recent types of Ubuntu but it didn't work. Then I tried acpi=off at the beginning of the installation. In this way I could finish the installation. But after the restart Ubuntu didn't work. Only a black screen appeared. Before that I tried it on the VirtualBox and it work. By the way my system is the following: (I use windows 7 currently) Processor AMD Athlon II P320 (2,1 GHz, second-level cache 2 ? 512 KB, HT 1600 MHz bus) Chipset AMD M880G + SB850 Memory Dual Channel, 3 GB DDR3-1066 Wide Screen 15.6 “high-definition (1366 ? 768) c LED-backlit, AU Optronics B156XW02 Video Card AMD Radeon HD 4250, from 336 MB video buffer in memory, support for DirectX 10.1 and UVD Sound system: HDA-codec IDT 92HD81B1X AMD HDMI Audio Hard drive WDC WD3200BEVT-75A23T0 (298 GB, 5400 RPM, SATA 2.0) Optical Drive: DVD ± RW Optiarc AD-7585H Communication tools Fast Ethernet (10/100 Mbit / c) Realtek RTL8102E/RTL8103E WiFi 802.11a/b/g Broadcom BCM4310 Bluetooth 2.1 + EDR Card reader Memory Card Reader 7-in-1 with support for SD / SDHC / MMC / MS / xD, and derivatives Interfaces / ports 3 USB 2.0 1 eSATA + USB 2.0 15-pin video connector VGA HDMI RJ-45 Ethernet 10/100 Mbit / c 2 analog mini-jack: a microphone / headphone jack for a Kensington lock slot AC adapter Battery Li-Ion 6-cell capacity of 4400 mA ? h (10,8, 48 W ? hr) AC power adapter 65 Watt Additional equipment integrated web-camera (1.3 mega pixels)

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  • DualLayout OpenSourceFood demo site installation instructions

    - by svdoever
    We released DualLayout which enables advanced web design with the power of SharePoint. DualLayout and a demo site can be downloaded from the DualLayout product page. This blogpost contains detailed instructions on installing the demo site. The demo site is based on the site http://opensourcefood.com. The demo site requires internet access because it still links to pages and resources of the real site. Execute the following steps to install the demo site: Copy the OpenSourceFoodDemo.zip file to your SharePoint Server 2010 Make sure that the zip file in “unblocked”, otherwise files are assumed from other computer (right-click on zip file, press “Unblock” button if available) Unzip the OpenSourceFoodDemo.zip to a folder of your choice (c:\OpenSourceFoodDemo) Open the SharePoint  Start->Microsoft SharePoint 2010 Products->SharePoint 2010 Management Shell Change directory to the unzip folder (cd c:\OpenSourceFoodDemo) Start install script: .\InstallDemoSite.ps1 Answer the questions, default values in most cases ok. A little guidance: Question: Give credentials for the account that will be used for the application pool Answer: use for example same account as used for the application pool of your SharePoint site (lookup in IIS Manager) Question: Give credentials for the account that will be used for the application pool Answer: Use same account you are currently logged in with The demo site is made available through a backup and restore. The SharePoint Server 2010 installation must be patched to a level equal or higher to the update level on the SharePoint Server used to create the backup. If you get errors with respect to restore check http://technet.microsoft.com/en-us/sharepoint/ff800847.aspx for downloading the latest cumulative update.

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  • How to Transfer All Your Information to a New PS3

    - by Justin Garrison
    The PlayStation 3 now costs half the price, has double the storage, and uses half the power. If you need another reason to upgrade, Sony also makes it easy to transfer all of your information to a new console. Transferring all of your games, data, and settings is easier than ever, and all you need is an ethernet cable. Read on as we walk you through the whole process of setting up your new PS3 and wiping all your information off the old one. Latest Features How-To Geek ETC Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions Hack Apart a Highlighter to Create UV-Reactive Flowers [Science] Add a “Textmate Style” Lightweight Text Editor with Dropbox Syncing to Chrome and Iron Is the Forcefield Really On or Not? [Star Wars Parody Video] Google Updates Picasa Web Albums; Emphasis on Sharing and Showcasing Uwall.tv Turns YouTube into a Video Jukebox Early Morning Sunrise at the Beach Wallpaper

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  • Should I expect my team to have more than a basic proficiency with our source control system?

    - by Joshua Smith
    My company switched from Subversion to Git about three months ago. We had weeks of advance notice prior to the switch. Since I'd never used Git before (or any other DVCS), I read Pro Git and spent a little time spinning up my own repositories and playing around, so that when we switched I'd be able to keep working with minimal pain. Now I'm the 'Git guy' by default. With a couple of exceptions, most of my team still has no idea how Git works. For example, they still think of branches as complete copies of the source code, and even go so far as to clone the repo into multiple folders (one per branch). They generally look at Git as a scary black box. Given the fundamental nature of source control in our daily work (not to mention the ridiculous amount of power Git affords us), I'm of the opinion that any dev who doesn't achieve a certain level of proficiency with it is a liability. Should I expect my team to have at least some understanding of how Git works internally, and how to use it beyond the most basic pull/merge/push operations? Or am I just making something out of nothing?

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  • Wordpress .htaccess preventing subfolder access

    - by John K.
    This is sort of a goofy setup, but it's not in my power to reconfigure it at this time. I'm running in a shared hosting environment. The domain is example.com. This is an add-on domain on the host side with example.com being redirected to the www/example.com sub-directory. That directory houses a standard Wordpress site which acts as the main site when you visit example.com. The .htaccess file within that directory is: # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteRule ^index\.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php [L] </IfModule> # END WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteRule ^wp-admin/profile\.php$ /ssm/welcome [R] </IfModule> I have a subdirectory, at the root level with the /example.com subdirectory that houses a cake php application. That subdirectory is /tracker. My problem is that when I attempt to browse to example.com/tracker, I get a 404 from Wordpress because perma links are on. What I think I need is a rewrite rule in the Wordpress .htaccess file that short circuits the existing rewrite rules and permits example.com/tracker to work independently of the Wordpress install. Or a rewrite rule at the root level that short circuits the redirect to the /example.com directory in the first place. Not sure how well I explained that so here's a summary. The www/ directory structure: example.com/ tracker/ Add on domain of www.example.com redirecting to the /example.com directory with Wordpress and a tracker/ directory running CakePHP which I would like to access via www.example.com/tracker. If you need further info or clarification let me know!

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  • Gnome3 shell video corruption with ATI Radeon HD 4850 on 11.10 Oneiric

    - by AndyAtTheWebists
    I have a problem similar to what's been mentioned in a few other questions, namely: Ati incompatible with Gnome-shell? Gnome Shell Glitched Top Bar Ubuntu 11.10 I have read a number of other posts here and on other forums and have tried a bunch of different solutions. The Problem The problem manifests itself only in Gnome3. I have tried KDE, Unity and KFCE and all are fine. The graphics corruption is visible only on gnome panels (see images below). Everything works fine with the free ATI drivers, but they just lack power. The problem occurs with the proprietary ones from AMD/ATI. I have installed version 11.11 and 12.1 as per the instructions on wiki.cchtml.com/index.php/Ubuntu_Oneiric_Installation_Guide. I have the same exact problem in both cases. I have tried this on clean installs of Ubuntu 11.10 Oneiric Ocelot (x64 and x86) and on Linux Mint 12 (x64) with the same results. Also, it looks like after some time of not using it, the PC just freezes. Maybe an overheat? Will look into it. Things I've Tried I have tried the following fixes: Different versions of drivers from ATI including the latest - this worked for some, not for me. Installing Oneiric specific package generated from driver, as well as the default install Removed the Unity Global menu Disabled file manager handling desktop Disabled Compiz "detect refresh rate" Sync to VBlank in Compiz on and off Please help! This is the first time in 10 years that I've finally had the chance to switch my primary desktop to Linux (stopped doing .NET dev work), and this is really getting me down. This is what the problem looks like: And:

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  • Join our webinar: What CFOs Want From IT -- Unlocking Growth with Emerging Technologies

    - by Di Seghposs
    According to the 2012 Gartner-FEI research, big data, analytics, and new mobile, social & cloud computing platforms are increasingly on the CFOs radar screen because of their potential to unlock new growth opportunities. Join Oracle Chair Jeff Henley, & Oracle's Reggie Bradford & Rich Clayton as they explore CFO strategies & best practices for driving real value from IT investments in these areas: Why CFOs should get involved in big data and business analytics projects, and what best practices they can adopt to ensure their success How CFOs are leveraging new mobile and cloud computing platforms to address enterprise demands quickly and cost effectively How CFOs can partner with CMOs to maximize the value of IT investments in social technologies that can help create new growth opportunities CFOs have more responsibility over IT than ever before.  Learn how Oracle unlocks the transformative power of IT to take your business to the next level of performance.   Date:Tuesday, November 27, 2012 Time:8:00 a.m. PST / 11:00 a.m. EST Register now.

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  • Today's Links (6/28/2011)

    - by Bob Rhubart
    Connecting People, Processes, and Content: An Online Event | Brian Dirking Dirking shares information on an Oracle Online Forum coming up on July 19. Social Relationships don't count until they count | Steve Jones "It's actually the interactions that matter to back up the social experience rather than the existence of a social link," says Jones. ORACLENERD: KScope 11: Cary Millsap Commenting on Cary Millsap's KScope presentation on Agile, Oracle ACE Chet Justice says, "I fight with methodology on a daily basis, mostly resulting in me hitting my head against the closest wall." The Sage Kings of Antiquity | Richard Veryard "Given that the empirical evidence for enterprise architecture is fairly weak, anecdotal and inconclusive, we are still more dependent than we might like on the authority of experts," says Veryard, "whether this be semi-anonymous committees (such as TOGAF) or famous consultants (such as Zachman)." Oracle Business Intelligence Blog: New BI Mobile Demos "These are short videos that showcase some of the capabilities in our mobile app," says Abhinav Agarwal. "One focuses on the Oracle BI platform, while the other showcases what is possible with the mobile app accessing Oracle Business Intelligence Applications, like Financial Analytics." MySQL HA Events in the UK, Germany & France | Oracle's MySQL Blog Oracle is running MySQL High Availability breakfast seminars in London (June 29), Düsseldorf (July 13) and Paris (September 7). "During these free seminars, we will review the various options and technologies at your disposal to implement highly available and highly scalable MySQL infrastructures, as well as best practices in terms of architectures," says Bertrand Matthelié. VENNSTER BLOG: User Experience in Fusion apps "When I heard about the Fusion Applications User Experience efforts, I was skeptical," says Oracle ACE Director Lonneke Dikmans of Vennster "My view of Oracle and User Experience has changed drastically today." Power Your Cloud with Oracle Fusion Middleware Running in over 50 cities across the globe, this event is aimed at Architects, IT Managers, and technical leaders like you who are using Fusion Middleware or trying to learn more about middleware in the context of Cloud computing.

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  • How is the Ubuntu installation supposed to work?

    - by Bob D
    I have given up on installing Ubuntu 12.04.01 for the sixth time. I finally got Windows XP to work again. So I blitzted the Ubuntu partition and the swap partition and was about to install the sixth try when it occurred to me that ought to ask how is is "supposed" to go. My installer will install Ubuntu on the Linus ext4 partition I created by hand in Windows on my C drive. But the installer keeps insisting on installing the OS on my D drive unless I intervene. So if I choose "do something else" it will accept installing Ubuntu on the C drive in the partition I previously created, but it insists on putting the "Device for boot loader installation" on the D drive. I can select a different drive at this point (where I could not with the "along side windows choice) but what drive to I choose??? It lists sda, sda1, sda5, sdb and sdb1. The five times before this all ended in disaster letting the installer choose. So I need human intervention. Where is the safe place to do this. The results from the previous attempts left me with only the Ubuntu that would boot, the boot to windows from the grub menu failed every time. Is there a better version of Ubuntu I can use? Is V12.04.01 messed up? My goal is still to use Wine on it to run PC programs. I would like to find a shell or skin or something that makes it seem like windows but have the security and power of Linux under the good. I have seen this type of system and it worked very well. I know I am getting long winded but I have been though at least four of the seven rings of hell already, so I want this install to be the last.

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  • How to reduce the fan noise and how to increase battery life in ubuntu 11.10/12.04?

    - by mehdi
    I have a brand new Sony Vaio S series laptop.(VPCSA2DGX) It came factory installed with Windows 7 professional Edition 64bit. Runs Intel core i5, 500 GB HDD , 4GB Ram. First I installed ubuntu 11.10 64 bit along side Windows to dual boot. Later,since the problem did not solve, I installed ubuntu 12.04 64bit along side Windows to dual boot. However the problem keeps annoying me. Problem: When running ubuntu 11.10/12.04, the battery lasts only about 1.5 hours. The Fan runs loud and continuously. And there is a lot of heat generated. System monitor shows less than 5% CPU used. My laptop enjoys hybrid graphic and I tried turning off ADM graphic card and keep Intel graphic card on. However I can not get the Fan noise or heat to go away and consequently the battery drain continues. BTW, in windows, the laptop gives 4-5 hours of battery power, Fan is silent and there is no heat problem. Any ideas on how to reduce the fan noise and how to increase battery life in ubuntu 11.10/12.04?

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  • Columnstore Case Study #1: MSIT SONAR Aggregations

    - by aspiringgeek
    Preamble This is the first in a series of posts documenting big wins encountered using columnstore indexes in SQL Server 2012 & 2014.  Many of these can be found in this deck along with details such as internals, best practices, caveats, etc.  The purpose of sharing the case studies in this context is to provide an easy-to-consume quick-reference alternative. Why Columnstore? If we’re looking for a subset of columns from one or a few rows, given the right indexes, SQL Server can do a superlative job of providing an answer. If we’re asking a question which by design needs to hit lots of rows—DW, reporting, aggregations, grouping, scans, etc., SQL Server has never had a good mechanism—until columnstore. Columnstore indexes were introduced in SQL Server 2012. However, they're still largely unknown. Some adoption blockers existed; yet columnstore was nonetheless a game changer for many apps.  In SQL Server 2014, potential blockers have been largely removed & they're going to profoundly change the way we interact with our data.  The purpose of this series is to share the performance benefits of columnstore & documenting columnstore is a compelling reason to upgrade to SQL Server 2014. App: MSIT SONAR Aggregations At MSIT, performance & configuration data is captured by SCOM. We archive much of the data in a partitioned data warehouse table in SQL Server 2012 for reporting via an application called SONAR.  By definition, this is a primary use case for columnstore—report queries requiring aggregation over large numbers of rows.  New data is refreshed each night by an automated table partitioning mechanism—a best practices scenario for columnstore. The Win Compared to performance using classic indexing which resulted in the expected query plan selection including partition elimination vs. SQL Server 2012 nonclustered columnstore, query performance increased significantly.  Logical reads were reduced by over a factor of 50; both CPU & duration improved by factors of 20 or more.  Other than creating the columnstore index, no special modifications or tweaks to the app or databases schema were necessary to achieve the performance improvements.  Existing nonclustered indexes were rendered superfluous & were deleted, thus mitigating maintenance challenges such as defragging as well as conserving disk capacity. Details The table provides the raw data & summarizes the performance deltas. Logical Reads (8K pages) CPU (ms) Durn (ms) Columnstore 160,323 20,360 9,786 Conventional Table & Indexes 9,053,423 549,608 193,903 ? x56 x27 x20 The charts provide additional perspective of this data.  "Conventional vs. Columnstore Metrics" document the raw data.  Note on this linear display the magnitude of the conventional index performance vs. columnstore.  The “Metrics (?)” chart expresses these values as a ratio. Summary For DW, reports, & other BI workloads, columnstore often provides significant performance enhancements relative to conventional indexing.  I have documented here, the first in a series of reports on columnstore implementations, results from an initial implementation at MSIT in which logical reads were reduced by over a factor of 50; both CPU & duration improved by factors of 20 or more.  Subsequent features in this series document performance enhancements that are even more significant. 

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  • How do I get a Belkin F5D8053 wireless adapter working?

    - by disassembler
    I've tried getting my Belkin N Wireless adapter to work on Ubuntu many times with no luck at all. Each time I seem to arrive at a dead end. After some thorough searching of UbuntuForums and WifiDocs I've gathered some information and narrowed the problem down to an issue with the rtl819xU driver. Here's some info that may help: $ sudo lshw -C network *-network DISABLED description: Wireless interface physical id: 1 bus info: usb@1:2 logical name: wlan0 serial: 00:22:75:38:52:ac capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl819xU multicast=yes wireless=802.11b/g/n $ sudo lsmod Module Size Used by vesafb 13449 1 snd_ice1724 106559 2 snd_ice17xx_ak4xxx 13163 1 snd_ice1724 snd_ac97_codec 105614 1 snd_ice1724 ac97_bus 12642 1 snd_ac97_codec snd_ak4xxx_adda 18436 2 snd_ice1724,snd_ice17xx_ak4xxx snd_ak4114 14326 1 snd_ice1724 snd_pt2258 12986 1 snd_ice1724 snd_i2c 13831 2 snd_ice1724,snd_pt2258 snd_ak4113 14307 1 snd_ice1724 snd_pcm 80244 4 snd_ice1724,snd_ac97_codec,snd_ak4114,snd_ak4113 fglrx 2434640 121 snd_seq_midi 13132 0 snd_rawmidi 25269 2 snd_ice1724,snd_seq_midi binfmt_misc 13213 1 snd_seq_midi_event 14475 1 snd_seq_midi snd_seq 51291 2 snd_seq_midi,snd_seq_midi_event ppdev 12849 0 snd_timer 28659 2 snd_pcm,snd_seq snd_seq_device 14110 3 snd_seq_midi,snd_rawmidi,snd_seq dcdbas 14054 0 r8192u_usb 297246 0 snd 55295 16 snd_ice1724,snd_ac97_codec,snd_ak4xxx_adda,snd_ak4114,snd_pt2258,snd_i2c,snd_ak4113,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 12600 1 snd parport_pc 32111 1 snd_page_alloc 14073 1 snd_pcm shpchp 32345 0 lp 13349 0 parport 36746 3 ppdev,parport_pc,lp usbhid 41704 0 hid 77084 1 usbhid e100 40108 0 floppy 60032 0 $ sudo iwconfig wlan0 802.11b/g/n Mode:Managed Access Point: Not-Associated Bit Rate:1 Mb/s Retry min limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=0/100 Signal level=0 dBm Noise level=0 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 I'd like to know if 1) Is the driver is properly installed and recognized by Ubuntu? 2) What can I do to load the drivers properly and make use of the adapter? Thanks!

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  • Price Drop for Processor based License on Exalytics

    - by Mike.Hallett(at)Oracle-BI&EPM
    ·       33% reduction in the list `per processor` license pricing for the Oracle BI Foundation Suite ·       New capacity-based licensing which allows customers to think big & start small, significantly lowering the entry price point for an Exalytics. Oracle BI Software List Price changes In response to new powerful platforms like the in-memory Oracle Exalytics with 40 cpu cores (counted under Oracle pricing policy as 20 “processors”), the list price of “Oracle BI Foundation Suite” (BIFS) is reduced by 33% from $450K per processor to $300K per processor. Capacity-based licensing on Exalytics (Trusted Partitions) “Capacity-based pricing” for the BIFS, Endeca, Essbase and Times Ten for Exalytics software is now available for Exalytics systems. This is delivered using “Oracle VM” (OVM).  We still ship a full Exalytics machine to all customers, but they may choose to only use and license a subset of the processors installed in the machine.   Customers can license Exalytics software in units of 5 “processors”: 5, 10, 15 or the full capacity 20.   As the customer’s implementation and workload increases, it is a simple matter to license additional processors and, using OVM, make them available to the BI or EPM application. Endeca Information Discovery now available on Exalytics Oracle has also announced the certification of “Oracle Endeca Information Discovery” (EID) on the Exalytics machine.    EID can be licensed alone or in combination with the BIFS & Times Ten for an Exalytics stack, and also participates in the capacity based pricing outlined above.   The Exalytics hardware is the perfect platform for EID, and provides superb power and performance for this in-memory hybrid text-search-analytics.   For more information : Oracle Price lists Oracle Partitioning Policy Discussion by Mark Rittman (Rittman Mead Consulting ltd.) on Oracle Trusted Partitions for Oracle Engineered Systems, Oracle Exalytics and Updated BI Foundation Pricing.

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  • Another Exchange 2003 to Exchange 2010 mail flow issue

    - by Ryan Roussel
    During a migration recently, we came across another internal mail routing issue.  The symptoms were identical to my previous post about Exchange internal mail routing.  Mail was flowing from 2010 to 2003, from 2010 to the internet, but not from 2003 to 2010.   I went through the normal check list looking at permissions, DNS, and the routing group connectors.  I verified that both servers listed in the routing group connectors were the routing master in their respective routing groups through the 2003 ESM.  I also verified that inheritable permissions were enabled for the Exchange 2003 server object in the schema.  No luck with either.   For my previous post about this issue in which inheritable permissions were the culprit: Exchange 2010, Exchange 2003 Mail Flow issue   And for Routing Group issues: Exchange 2007 Routing Group Connector Mayhem   I finally enabled logging on the SMTP virtual server on Exchange 2003 and the Default Receive Connector on 2010 and sent a few test e-mails where I found 2003 was having issues authenticating to 2010.  By default 2003 uses Exchange Server Authentication to communicate to 2010. The exact error was: 4.7.0 Temporary Authentication Failure which was found in the SMTP logs on the Exchange 2003 side   After scouring based on this error, I found the solution:   The Access this computer from the network user rights in the local computer policy on the Exchange 2010 server were changed from the default.  The network administrator had modified the Default Domain policy and changed this user right assignment to only list Domain Users.   The fix was to clear this setting in the Default Domain policy,  force gpupdate to refresh the group policy settings, then ensure the appropriate users and groups were listed.   This immediately fixed the problem and the Exchange 2003 server was able to route mail to the Exchange 2010 mailboxes.   The default user rights assignments for Access this computer from the network On Workstations and Servers: Administrators Backup Operators Power Users Users Everyone On Domain Controllers: Administrators Authenticated Users Everyone More can be found here: http://technet.microsoft.com/en-us/library/cc740196(WS.10).aspx

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  • Priority Manager&ndash;Part 1- Laying out the plan

    - by Patrick Liekhus
    Now that we have shown the EDMX with XPO/XAF and how use SpecFlow and BDD to run EasyTest scripts, let’s put it all together and show the evolution of a project using all the tools combined. I have a simple project that I use to track my priorities throughout the day.  It uses some of Stephen Covey’s principles from The 7 Habits of Highly Effective People.  The idea is to write down all your priorities the night before and rank them.  This way when you get started tomorrow you will have your list of priorities.  Now it’s not that new things won’t appear tomorrow and reprioritize your list, but at least now you can track them.  My idea is to create a project that will allow you manage your list from your desktop, a web browser or your mobile device.  This way your list is never too far away.  I will layout the data model and the additional concepts as time progresses. My goal is to show the power of all of these tools combined and I thought the best way would be to build a project in sequence.  I have had this idea for quite some time so let’s get it completed with the outline below. Here is the outline of the series of post in the near future: Part 2 – Modeling the Business Objects Part 3 – Changing XAF Default Properties Part 4 – Advanced Settings within Liekhus EDMX/XAF Tool Part 5 – Custom Business Rules Part 6 – Unit Testing Our Implementation Part 7 – Behavior Driven Development (BDD) and SpecFlow Tests Part 8 – Using the Windows Application Part 9 – Using the Web Application Part 10 – Exposing OData from our Project Part 11 – Consuming OData with Excel PowerPivot Part 12 – Consuming OData with iOS Part 13 – Consuming OData with Android Part 14 – What’s Next I hope this helps outline what to expect.  I anticipate that I will have additional topics mixed in there but I plan on getting this outline completed within the next several weeks.  Thanks

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  • How can rotating release managers improve a project's velocity and stability?

    - by Yannis Rizos
    The Wikipedia article on Parrot VM includes this unreferenced claim: Core committers take turns producing releases in a revolving schedule, where no single committer is responsible for multiple releases in a row. This practice has improved the project's velocity and stability. Parrot's Release Manager role documentation doesn't offer any further insight into the process, and I couldn't find any reference for the claim. My first thoughts were that rotating release managers seems like a good idea, sharing the responsibility between as many people as possible, and having a certain degree of polyphony in releases. Is it, though? Rotating release managers has been proposed for Launchpad, and there were some interesting counterarguments: Release management is something that requires a good understanding of all parts of the code and the authority to make calls under pressure if issues come up during the release itself The less change we can have to the release process the better from an operational perspective Don't really want an engineer to have to learn all this stuff on the job as well as have other things to take care of (regular development responsibilities) Any change of timezones of the releases would need to be approved with the SAs and: I think this would be a great idea (mainly because of my lust for power), but I also think that there should be some way making sure that a release manager doesn't get overwhelmed if something disastrous happens during release week, maybe by have a deputy release manager at the same time (maybe just falling back to Francis or Kiko would be sufficient). The practice doesn't appear to be very common, and the counterarguments seem reasonalbe and convincing. I'm quite confused on how it would improve a project's velocity and stability, is there something I'm missing, or is this just a bad edit on the Wikipedia article? Worth noting that the top voted answer in the related "Is rotating the lead developer a good or bad idea?" question boldly notes: Don't rotate.

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  • Consumer Oriented Search In Oracle Endeca Information Discovery – Part 1

    - by Bob Zurek
    Information Discovery, a core capability of Oracle Endeca Information Discovery, enables business users to rapidly search, discover and navigate through a wide variety of big data including structured, unstructured and semi-structured data. One of the key capabilities, among many, that differentiate our solution from others in the Information Discovery market is our deep support for search across this growing amount of varied big data. Our method and approach is very different than classic simple keyword search that is found in may information discovery solutions. In this first part of a series on the topic of search, I will walk you through many of the key capabilities that go beyond the simple search box that you might experience in products where search was clearly an afterthought or attempt to catch up to our core capabilities in this area. Lets explore. The core data management solution of Oracle Endeca Information Discovery is the Endeca Server, a hybrid search-analytical database that his highly scalable and column-oriented in nature. We will talk in more technical detail about the capabilities of the Endeca Server in future blog posts as this post is intended to give you a feel for the deep search capabilities that are an integral part of the Endeca Server. The Endeca Server provides best-of-breed search features aw well as a new class of features that are the first to be designed around the requirement to bridge structured, semi-structured and unstructured big data. Some of the key features of search include type a heads, automatic alphanumeric spell corrections, positional search, Booleans, wildcarding, natural language, and category search and query classification dialogs. This is just a subset of the advanced search capabilities found in Oracle Endeca Information Discovery. Search is an important feature that makes it possible for business users to explore on the diverse data sets the Endeca Server can hold at any one time. The search capabilities in the Endeca server differ from other Information Discovery products with simple “search boxes” in the following ways: The Endeca Server Supports Exploratory Search.  Enterprise data frequently requires the user to explore content through an ad hoc dialog, with guidance that helps them succeed. This has implications for how to design search features. Traditional search doesn’t assume a dialog, and so it uses relevance ranking to get its best guess to the top of the results list. It calculates many relevance factors for each query, like word frequency, distance, and meaning, and then reduces those many factors to a single score based on a proprietary “black box” formula. But how can a business users, searching, act on the information that the document is say only 38.1% relevant? In contrast, exploratory search gives users the opportunity to clarify what is relevant to them through refinements and summaries. This approach has received consumer endorsement through popular ecommerce sites where guided navigation across a broad range of products has helped consumers better discover choices that meet their, sometimes undetermined requirements. This same model exists in Oracle Endeca Information Discovery. In fact, the Endeca Server powers many of the most popular e-commerce sites in the world. The Endeca Server Supports Cascading Relevance. Traditional approaches of search reduce many relevance weights to a single score. This means that if a result with a good title match gets a similar score to one with an exact phrase match, they’ll appear next to each other in a list. But a user can’t deduce from their score why each got it’s ranking, even though that information could be valuable. Oracle Endeca Information Discovery takes a different approach. The Endeca Server stratifies results by a primary relevance strategy, and then breaks ties within a strata by ordering them with a secondary strategy, and so on. Application managers get the explicit means to compose these strategies based on their knowledge of their own domain. This approach gives both business users and managers a deterministic way to set and understand relevance. Now that you have an understanding of two of the core search capabilities in Oracle Endeca Information Discovery, our next blog post on this topic will discuss more advanced features including set search, second-order relevance as well as an understanding of faceted search mechanisms that include queries and filters.  

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  • Fix for poor hd playback for 11.04 upwards

    - by mark kirby
    Hi guys ive seen loads of posts on this site about poor 720/1080p playback in recent ubuntu versions I had this problem and fixed it so I thought id share it with everyone.... 1 install mplayer 2 install smplayer frontend {in software center} 3 open smplayer 4 go to "OPTIONS" then "PREFRENCES" then "GENRAL" 5 if you have a nvidia card choose "OUTPUT DRIVER" and select "VDPAU" {for ATI or AMD choose xv (0 - ATI Radeon AVIVO video) I dont know if this will work as my card is nvidia but it should) 6 go to performance on the left hand side and set both local and streaming cache to 99999 (this may also fix dvd playback if you set that cache aswell} 7 check the box for "ALLOW HARD FRAME DROP" and set "LOOP FILTER" to skip only on HD 8 Set the "THREDS FOR DECODING OPTION TO THE NUMBER OF CORES YOUR CPU HAS IF YOU HAVE MORE THAN ONE CPU ADD UP ALL THE CORES FOR BEST PERFORMANCE" 9 Enjoy you HD movies again on ubuntu...... I have a pretty avrage machine heres my spec.... 2x Pentium 4 ht 3 ghz Stock dell power and motherboard GFORCE 310 HDMI 24 inch full HD tv as a monitor so any one with dule core cpu should have no problems getting this to work. hope this helps someone out.

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