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  • A Patent for Workload Management Based on Service Level Objectives

    - by jsavit
    I'm very pleased to announce that after a tiny :-) wait of about 5 years, my patent application for a workload manager was finally approved. Background Many operating systems have a resource manager which lets you control machine resources. For example, Solaris provides controls for CPU with several options: shares for proportional CPU allocation. If you have twice as many shares as me, and we are competing for CPU, you'll get about twice as many CPU cycles), dedicated CPU allocation in which a number of CPUs are exclusively dedicated to an application's use. You can say that a zone or project "owns" 8 CPUs on a 32 CPU machine, for example. And, capped CPU in which you specify the upper bound, or cap, of how much CPU an application gets. For example, you can throttle an application to 0.125 of a CPU. (This isn't meant to be an exhaustive list of Solaris RM controls.) Workload management Useful as that is (and tragic that some other operating systems have little resource management and isolation, and frighten people into running only 1 app per OS instance - and wastefully size every server for the peak workload it might experience) that's not really workload management. With resource management one controls the resources, and hope that's enough to meet application service objectives. In fact, we hold resource distribution constant, see if that was good enough, and adjust resource distribution if that didn't meet service level objectives. Here's an example of what happens today: Let's try 30% dedicated CPU. Not enough? Let's try 80% Oh, that's too much, and we're achieving much better response time than the objective, but other workloads are starving. Let's back that off and try again. It's not the process I object to - it's that we to often do this manually. Worse, we sometimes identify and adjust the wrong resource and fiddle with that to no useful result. Back in my days as a customer managing large systems, one of my users would call me up to beg for a "CPU boost": Me: "it won't make any difference - there's plenty of spare CPU to be had, and your application is completely I/O bound." User: "Please do it anyway." Me: "oh, all right, but it won't do you any good." (I did, because he was a friend, but it didn't help.) Prior art There are some operating environments that take a stab about workload management (rather than resource management) but I find them lacking. I know of one that uses synthetic "service units" composed of the sum of CPU, I/O and memory allocations multiplied by weighting factors. A workload is set to make a target rate of service units consumed per second. But this seems to be missing a key point: what is the relationship between artificial 'service units' and actually meeting a throughput or response time objective? What if I get plenty of one of the components (so am getting enough service units), but not enough of the resource whose needed to remove the bottleneck? Actual workload management That's not really the answer either. What is needed is to specify a workload's service levels in terms of externally visible metrics that are meaningful to a business, such as response times or transactions per second, and have the workload manager figure out which resources are not being adequately provided, and then adjust it as needed. If an application is not meeting its service level objectives and the reason is that it's not getting enough CPU cycles, adjust its CPU resource accordingly. If the reason is that the application isn't getting enough RAM to keep its working set in memory, then adjust its RAM assignment appropriately so it stops swapping. Simple idea, but that's a task we keep dumping on system administrators. In other words - don't hold the number of CPU shares constant and watch the achievement of service level vary. Instead, hold the service level constant, and dynamically adjust the number of CPU shares (or amount of other resources like RAM or I/O bandwidth) in order to meet the objective. Instrumenting non-instrumented applications There's one little problem here: how do I measure application performance in a way relating to a service level. I don't want to do it based on internal resources like number of CPU seconds it received per minute - We need to make resource decisions based on externally visible and meaningful measures of performance, not synthetic items or internal resource counters. If I have a way of marking the beginning and end of a transaction, I can then measure whether or not the application is meeting an objective based on it. If I can observe the delay factors for an application, I can see which resource shortages are slowing an application enough to keep it from meeting its objectives. I can then adjust resource allocations to relieve those shortages. Fortunately, Solaris provides facilities for both marking application progress and determining what factors cause application latency. The Solaris DTrace facility let's me introspect on application behavior: in particular I can see events like "receive a web hit" and "respond to that web hit" so I can get transaction rate and response time. DTrace (and tools like prstat) let me see where latency is being added to an application, so I know which resource to adjust. Summary After a delay of a mere few years, I am the proud creator of a patent (advice to anyone interested in going through the process: don't hold your breath!). The fundamental idea is fairly simple: instead of holding resource constant and suffering variable levels of success meeting service level objectives, properly characterise the service level objective in meaningful terms, instrument the application to see if it's meeting the objective, and then have a workload manager change resource allocations to remove delays preventing service level attainment. I've done it by hand for a long time - I think that's what a computer should do for me.

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  • Now Available:Oracle Utilities Customer Self Service Version 2.1

    - by Roxana Babiciu
    The Oracle Utilities Global Business Unit is pleased to announce the general availability of Oracle Utilities Customer Self Service 2.1. It is ready for customers and partners to download and install via the Oracle Software Delivery Cloud. Key Features & Benefits: Oracle Utilities Customer Self Service 2.1 includes several new capabilities and enhancements including significantly improved Commercial Account Management and Advanced Notification Management using a new Oracle Utilities Notification Center module (licensed separately). These include the following: Advanced Notification Management Online Issues and Forms Management • Budget Management and Billing for Billed Budgets Prepaid User Dashboard Enhanced Usage Details Web Presentment Start/Stop/Transfer Service Automation Payment Arrangement Automation Account Sets Management for Large Commercial Customers Multiple Account Usage Data Aggregation, Comparison, and Data Download Multiple Account Financial History Mobile Outage Maps More information can be found on OPN

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  • Silverlight XAP Signing Certificate promotion from Thawte

    And the offers keep coming in! Another one of our key partners for testing XAP signing for trusted applications was Thawte. Their group helped provide us with valid certificates to verify their process and signing worked as expected (and verified) for Silverlight 4. Today I just got an email from their marketing department that they would like to offer Silverlight developers a discount on Thawte code-signing certificates to $89 for a 1-yearabout 70% off their current rate. Thats pretty amazing of...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Automatically adding CD box art so that I can put it on my iPod.

    - by Seamus
    I know it's possible to automatically find CD covers for albums, because rhythmbox is doing it on the fly. (When I listen to stuff, it finds the CD cover online...) What I want is to get this information onto my ipod. As it stands pretty much all my songs have the default blank CD cover... I use gtkpod to transfer music to it. This needs to be an automatic process, because I have a large music library and I'm lazy and it's not exactly an important thing... I rip CDs I buy with the basic CD extractor, so all the files are in a Artist/Album/song.mp3 structure. (Yes I know, mp3 is evil, but iPod doesn't like .ogg so whatever)

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  • Jumpshare Makes It Dead Simple To Drag, Drop, and Share 150+ File Formats

    - by Jason Fitzpatrick
    If you’re looking for a super simple way to share files with friends and coworkers Jumpshare offers drag and drop file transfer with a powerful built in file viewer. You don’t need to register, install any software, or do anything but drag the file, drop it onto the Jumpshare interface, and share the link with your friend. Share the link and your friend can watch the real-time progress of the file upload as well as download or view the completed files within the Jumpshare file viewer. Files are hosted for two weeks before deletion. Hit up the link below to take it for a test drive. Jumpshare HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It HTG Explains: How Windows Uses The Task Scheduler for System Tasks

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  • Which image sharing websites supports file uploading dynamically via api

    - by KoolKabin
    I have been searching for image hosting website that displays images of a user in a nice and managed way. I want to upload the files to that image hosting website in my account of that website from a page in my website. i.e if i have a website abc.com then user browse my website abc.com. Uploads the file to my website. Now I want to transfer the uploaded file to the image hosting website so that it can be viewed by other users of that hosting website and get better visibility to world

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  • Slow on browsing web, but normal when using apt-get

    - by Arif Setyawan
    I have a problem with my fresh instalation of Ubuntu 11.10. The problem happen when i start up my browser and accessing website such google, askubuntu.com, facebook and other sites. frustate on the situation i try watch the progress in system monitor. the result from monitor shows that there is no data transfer when i try to accessing the page. firstly, i assume that it is the trouble from my ISP or my home connection. But it is not. When i try pinging google it shows transaction between my computer and the network but still null from browser. Then i tried to test the aptitude and it was work fine but still the browser won't recieve any packet from the internet. Here is the detail of my tools : Laptop : Toshiba Satellite e205 (network card atheros) Operating System : Ubuntu 11.04 dual booted with Win7 Browser : Mozilla Firefox comes up with the Ubuntu 11.10 installation Chrome : Last version (just yesterday install it) Thank You before :) [this question posted via win]

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  • Moving Ubuntu to a new hdd

    - by jaurisan
    I have a 300gb hdd which I am currently using on my older PC. Now I want to have a copy of those 300GB into a new 1TB hdd (installed in a new computer). My "problem" is that the 1TB hdd already has a 50GB partition with a Win XP (the rest of the space is not partitioned). The 300GB disk has a 240GB partition for Ubuntu, and the rest is a FAT partition which I don't care if it gets copied or not to the new disk. So how can I transfer the entire Ubuntu to the new hard disk and still being able to boot the XP? Is there a way or tool that can help me do over LAN? So I wont have to take out the hdd from the new pc and put it in the older to do the copy.

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  • From Transactions To Engagement

    - by David Dorf
    I've mentioned in the past that Oracle has invested quite a bit in acquiring social companies to build out its Social Relationship Management suite.  The concept is to shift away from transactions and towards engagement.  Social media represents a great opportunity to engage with customers, learn what they want, and personalize the shopping experience for them. I look at SRM as the bridge between traditional CRM and CX.  If you're looking for ideas, check out Five Social Retailing Suggestions and Social Analytics and the Customer.  There are lots of ways to leverage social media to enhance the customer experience and thus drive more sales. My friends over at 8th Bridge have just released their Social IQ report in which they rate retailers on their social capabilities.  They also produced a nice infographic so you can consume the data quickly, but I'd still encourage you to download the full report. Retailers interested in upping their SRM abilities should definitely stop by the Oracle booth at NRF in January.

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  • Trying to Integrate Five9 and Apptivio [on hold]

    - by David Mitchell
    Five9 is a calling system application and Apptivio will be used to store client information for purchased products. Specifically what I need is an example code that will allow me to access Five9's CRM system using the access key and transfer a persons first and last name, for example, to Apptivio. The issue is I have never dealt with this type of system and I cannot find any information for it other than the Web2Campaign that was sent to me by Five9. Lets say this is the code from Five9 F9key=first_name&F9key=last_name&first_name=jon&last_name=smith Once this information is placed into Five9 I must update Apptivio with this information. I am lost as to how to send this information to Apptivio.

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  • 14.04 PlayonLinux and Steam equals jittery choppy freezing video

    - by user2715390
    I trying to get some windows gaming software (warframe) up ad running and it is running but the video is very choppy/freezes even though the reported frame rate is 60fps. I'm using: Ubuntu 14.04 Nvidia 340 driver Play on Linux 4.2.4-2 Wine 1.7.24 & 1.7.22 (switchable) Steam 13 Aug 2014 14:19:47 I used the following link to get it going Warframe Linux/Ubuntu Does anyone have any tips for diagnosing this? Anyway I think it has something to do with syncing. I would like to disable audio in steam or play on linux so I can eliminate any sound issues. How do I do this? Regards WallyZ

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  • What are the advantages and disadventages of git or bzr + rsync vs rdiff-backup?

    - by Azendale
    I used to use rsync to do backups, but then I switched to rdiff-backup to incremental backups. Recently, I discovered git and bzr while working on a coding project. So, I was thinking, I could have my backup disk be a repository in either git or bzr. Then I could rsync to the repository, and commit the changes. Would there be any performance concerns with this? Any other issues that I'm not thinking of? The benefit I see in using rsync is that you can restart an interrupted transfer, while rdiff-backup reverts to the last version, and then starts again. Any reason not to do it this way? Anything I'm not thinking of?

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  • Ubuntu Server 12.04 Samba Server timeout

    - by phileaton
    I am a beginner with servers. I checked the error logs for Samba and it appears that Samba is timing out when I transfer large files. I can successfully add PDFs for instance to my file server. However, I tried to add a large 1.2Gb video file and it did not succeed. This is the error in the log: smbd/process.c:244(read_packet_remainder) read_fd_with_timeout failed for client 0.0.0.0 read error = NT_STATUS_CONNECT$ Is there a way I can stop it from timing out? Any pointers would be great! Thanks!

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  • Design leaderboard ratings for quiz games

    - by PeterK
    Back in March 2011 i started the following post: How to design a leaderboard? Now my quiz game have been out for approximately a year and sold pretty decently. I am working on to update the game design and is again looking into the leaderboard design to make it better as i am not happy with it. Currently i rate players on number of correct answers, which is not good as it does not consider things like number of games, difficulty levels etc. I also have "extended" stats behind the UITableView (Leaderboard). A player can play based on three levels of difficulty: hard, medium or easy Difficulty levels can be mixed between players in a game Each game can be one to six players, so there can be single games or duels Between 2 and 30 questions per game As i am considering integrating Game Center Leaderboard i need to design a better rating system so i would like to ask for some ideas how to do the rating based on the above. I am thinking about how much a point would be worth and what it includes.

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  • At what point should data be sent back to server?

    - by whamsicore
    A good example would be the stackexchange "rate" button. When a post is upvoted the arrow changes color immediately. However there is a grace period for one to edit one's vote decision (oops! voted by mistake?). Is the upvote action processed immediately or does is only process after a set time period, or when the user leaves the page? How exactly is this rating processed? What is the standard for handling dynamic page edits (e.g. stackexchange rating, facebook posts?)

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  • WIFI card intel r 2200 will not work

    - by Telemarkhero
    I have installed 12.04 on a Fujitsu Siemens Amilo Pro. Wifi card does not work. Have tried various threads but none have the same problem. Think I have the correct firmware but the following comes up: gill@ubuntu:~$ iwconfig lo no wireless extensions. eth1 IEEE 802.11bg ESSID:off/any Mode:Managed Channel:0 Access Point: Not-Associated Bit Rate:0 kb/s Tx-Power=off Sensitivity=8/0 Retry limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 eth0 no wireless extensions. Also gill@ubuntu:~$ rfkill list all 0: phy0: Wireless LAN Soft blocked: no Hard blocked: yes There is a power switch for wifi but it does not do anything in Ubuntu. Any pointers greatfully received.

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  • What are the most effective learning methods?

    - by BuckWoody
    After I got done speaking at the SQL Server 2008 R2 Launch Event yesterday I came back to the hotel room for a web-meeting with some of the other teachers at the University of Washington. As teachers we are always looking to improve the knowledge transfer to our students – and the Program Director found an interesting study that I thought I might share here. Below is an un-labeled chart showing the effectiveness of learning methods according to a recent study. At the top are the labels. (“Teaching” here means students teaching each other). Try the experiment we did: place the labels where you think they’ll go. I’ll post the completed chart tomorrow. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • SEO disasters moving domain for a high traffic website?

    - by chrism2671
    We're looking at moving our website from http://www.wikijob.co.uk to http://www.wikijob.com/uk as we spread our wings internationally. Our .co.uk website has a PR6 and received around 1/2 million visitors a month, 40% international. The wikijob.com domain, while registered for a while, has not been used nor promoted. I am concerned that moving domain could really haemorrhage our traffic and result in a loss of goodwill from Google, even if we use a 301, but equally, if we could transfer that pagerank to the .com domain, that would give us a massive head start around the world. Should we do it, or should we start over with .com and leave .co.uk as is?

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  • transferring files from PC to Ubuntu PC on same network

    - by Travis
    i recently installed a fresh version of ubuntu 12.04 i wanted to transfer my old files from my pc that is running windows, to my other pc which now has ubuntu installed on it. They are both on the same network, i feel like this should be something easy to do, but i cant figure it out at all. Any help would be appreciated thank you. I downloaded and installed samba on my linux computer, and set up a share, but i can not find the directory on my windows machine. where do i find it?

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  • Multiple X screens without Xinerama

    - by Kalle Elmér
    Is there some way to move Windows between separate X screens in Ubuntu 12.04? With 3 monitors on 2 GPUs, using Twinview is not an option. Xinerama allows me to drag windows between all monitors, but it also means that I lose all hardware acceleration. I don't expect to be able to drag windows between the screens and have them occupy two monitors simultaneously, but there must be some way to transfer a program while it is running. At the moment, I don't even know how to select which monitor it will use when launched. Any pointers?

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  • Dynamically vs Statically typed languages studies

    - by Winston Ewert
    Do there exist studies done on the effectiveness of statically vs dynamically typed languages? In particular: Measurements of programmer productivity Defect Rate Also including the effects of whether or not unit testing is employed. I've seen lots of discussion of the merits of either side but I'm wondering whether anyone has done a study on it. Edit Sadly, only one of the papers shown is actually a study and it does nothing but conclude that the language matters. This leads me to ponder: what if I proposed doing such a study with volunteers from this site?

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  • Problem with setting up a bootable USB on corrupted OSX

    - by Nick
    I cant access the desktop because my harddrive is corrupted. Therefore I want to make a bootable USB stick so i can transfer all of my important files to my External HD. Problem is that Im stuck on Step 3 --- http://www.ubuntu.com/download/help/create-a-usb-stick-on-mac-osx . Im not sure of what i should change this to: hdiutil convert -format UDRW -o ~/path/to/target.img ~/path/to/ubuntu.iso It says convert failed - No such file or directory. Obviously the problem is that i dont know the path to the USB, maybe you know how to find out? Please help me. Thanks. ps. Ive downloaded the ubuntu desktop amd64+mac. pps. Unetbootin is a different alternative, but i dont know if it works?

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  • The DotNetNuke Gallery Module - 7 Video Tutorials

    In this video tutorial we cover the Installation of the DotNetNuke Core Gallery Module and show you how to configure it correctly.We walk you through how to use all of the features in the Gallery module including creating albums, uploading files, bulk uploads, the slideshow, media files, watermarks, templates, and more.The videos contain:Video 1 - Introduction to the DNNGallery Module, Installation and Basic ConfigurationVideo 2 -How to Upload Images and Configure Their SettingsVideo 3 -Creating Gallery Albums and Bulk UploadingVideo 4 - How to Add Files and Albums Using FTP, Adding Music and Changing Permissible Upload TypesVideo 5 - How to Add Video Files, How to Rate Files,Gallery Look and FeelVideo 6 - Changing Feature Settings,Adding Watermarks, Gallery Security RolesVideo 7 - Working withPrivate Galleries and Security Roles, Gallery MaintenanceTotal Time Length: 57minsThe DotNetNuke Gallery Module - 7 Video Tutorials Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How to make bash script run with a latency (i.e. wait 1 sec at each iterations)?

    - by user2413
    I have this bash script; for (( i = 1 ; i <= 160 ; i++ )); do qsub myccomputations"${i}".pbs done Basically, I would prefer if there was a 1 second delay between each iteration. The reason is that at each iterations, it sends the program file mycomputation"${i}$.pbs to a core node for solving. Solving in this instance involves the use of pseudo random numbers. I suspect the RNG I use (R's) uses CPU time as seed because as things are now I get repeating pseudo random numbers (at the rate of approx 1 out of 100). So how to you ask bash to for (( i = 1 ; i <= 160 ; i++ )); do wait 1 sec qsub myccomputations"${i}".pbs done

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  • BI&EPM in Focus Oct 2012

    - by Mike.Hallett(at)Oracle-BI&EPM
    Customers Iluka Resources Improves Business Insight into Mining Operations Through Significantly Faster, Customized Analyses Banco do Brasil Monitors Budgets in Real Time, Generates Financial Reports In Minutes Instead of Months General Dynamics Improves Budgeting and Planning and Accelerates Rate Changes by Using Integrated Enterprise Performance Management Suite Facebook achieves world-wide automation of financial close task tracking and management of account reconciliations with Oracle Hyperion Financial Close Management (link) Hess Consolidates Multiple SAP General Ledgers with Oracle Hyperion (link) Navistar Leads with Cutting Edge Hyperion Platform, Including HSF, HPCM (link)   Enterprise Performance Management Oct 10: Navistar Leverages DRM (Rolta Solutions) (link) Replay: Integrated Business Planning, Featuring Leggett & Platt (link)   Business Intelligence Report: From Overload to Impact: An Industry Scorecard on Big Data Business Challenges (link | press release) Oct 10: The Top Five Things You Should Know When Migrating from an Old BI Technology to Oracle Business Intelligence Enterprise Edition (perfomance architects) (link)

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