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  • My search what the Cloud will mean for my Work, part 2

    - by Kay Sellenrode
    My experience with the cloud and why work will change and not disappear. Until now I have multiple experiences with the cloud, for the most good. i have worked on multiple cloud solutions in the past but let me describe them as 0.x versions. For me the 1st real serious cloud experience was a bit more than 1 year ago, when our company switched from an in house server to Microsoft BPOS as a complete replacement. Since we are a small consultancy firm and don’t have that much else to do than consulting, our IT requirements are quite simple. We need Mail and Storage space for our documents. With the in house server we had multiple outages during a year, mostly by lack of administering. Being consultants in the field and hardly having time to maintain a server, BPOS was and still is for us the right solution. Since the migration we have less outages and a much more robust solution. Have we run into issues with BPOS for our own environment? No not that I’m aware of. Based on this experience I made a stance about deploy ability of BPOS and cloud solutions, they are suitable for MKB (Dutch for Medium and Small Businesses). Most Small businesses don’t have the amount of work to hire a full time it admin. Hiring a service provider to maintain their own server might be even more costly than hiring an admin. So seeing the capabilities of BPOS and the needs of most businesses I see it as a great solution that gives the business a complete Server replacement solution for a fixed price per user. resulting in a clear budget for IT spending, something most small businesses were looking for, for a long time. So right now I’m deploying BPOS with a customer, and I run into some of the Cloud 1.0 issues. In my opinion BPOS is a good working Cloud version 1.0 solution. What do I mean with 1.0? Well 1.0 is mostly a tested solution (unlike 0.x versions) but still have quite some limitations caused by too few market experience. in my opnion this is also the reason why we don’t see that much BPOS customers yet and why I think Office 365 will make a huge difference. What I have seen of 365 shows me it is a Cloud 2.0 version, meaning it has all needed features and is much more flexible to the customer. This is also why I see changes happen in my work field, changes and not unemployment due to Cloud solutions. Cloud 1.0 solutions gave me the idea that if every customer would adopt them I would be out of work. But in reality Cloud 1.0 solutions are here just to set the market needs. The Cloud 2.0 and higher versions will give the customer much more flexibility, but also require the need for a consultant. Where the 1.0 versions are simple to setup and maintain, the 2.0 solution needs more thought upfront and afterwards. ie. BPOS in its 1.0 version brings you a very simplified Exchange 2007 solution, Suitable for some customers. Looking at Office 365 you receive almost a full blown Exchange 2010 solution. I expect this to be even more customizable in the next version. In my search for the changes to my work I try to regulary write a post with my thought around the Cloud and the impact on my work as a consultant. I'm also planning to present around this topic, so if anyone is interested to see me present around this topic, you're more than welcome to contact me.

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  • Getting MTP to work with a Galaxy tab 2 7.0?

    - by Wouter
    I'm trying to get MTP with the galaxy tab 2 7.0 working on my ubuntu installation. Such that I can access the files. I tried to do what is described here: http://www.omgubuntu.co.uk/2011/12/how-to-connect-your-android-ice-cream-sandwich-phone-to-ubuntu-for-file-access I however fail at executing one of the following commands mtp-detect | grep idVendor mtp-detect | grep idProduct This fails [20:42|0] $ mtp-detect | grep idVender Device 0 (VID=04e8 and PID=6860) is a Samsung GT-P7310/P7510/N7000/I9100/Galaxy Tab 7.7/10.1/S2/Nexus/Note. PTP_ERROR_IO: failed to open session, trying again after resetting USB interface LIBMTP libusb: Attempt to reset device LIBMTP PANIC: failed to open session on second attempt Unable to open raw device 0 [20:44|0] $ mtp-detect | grep idProduct Device 0 (VID=04e8 and PID=6860) is a Samsung GT-P7310/P7510/N7000/I9100/Galaxy Tab 7.7/10.1/S2/Nexus/Note. PTP_ERROR_IO: failed to open session, trying again after resetting USB interface LIBMTP libusb: Attempt to reset device LIBMTP PANIC: failed to open session on second attempt Unable to open raw device 0 Now my guess was was that the idVender is the same as the VID (04e8) and the idProduct is the same as PID (6860) Now I continued to work with those values and completed the tutorial. When finished I tried android-connect This returned fuse: bad mount point `/media/GalaxyTab': Transport endpoint is not connected Does anybody have a clue what to do? Also I want to note that when I connect my GalaxyTab 2 7.0 that I still get a pop-up of ubuntu that a device was connected. I also can still see the mapstructure, the problem however is is that all the folders have 0 bytes and do not have any subfolders. I can only see the folders in the root. ps. I also checked a similar question and tried what is described in this answer http://askubuntu.com/a/88630/27480

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  • How to Make the Gnome Panels in Ubuntu Totally Transparent

    - by The Geek
    We all love transparency, since it makes your desktop so beautiful and lovely—so today we’re going to show you how to apply transparency to the panels in your Ubuntu Gnome setup. It’s an easy process, and here’s how to do it. This article is the first part of a multi-part series on how to customize the Ubuntu desktop, written by How-To Geek reader and ubergeek, Omar Hafiz. Making the Gnome Panels Transparent Of course we all love transparency, It makes your desktop so beautiful and lovely. So you go for enabling transparency in your panels , you right click on your panel, choose properties, go to the Background tab and make your panel transparent. Easy right? But instead of getting a lovely transparent panel, you often get a cluttered, ugly panel like this: Fortunately it can be easily fixed, all we need to do is to edit the theme files. If your theme is one of those themes that came with Ubuntu like Ambiance then you’ll have to copy it from /usr/share/themes to your own .themes directory in your Home Folder. You can do so by typing the following command in the terminal cp /usr/share/themes/theme_name ~/.themes Note: don’t forget to substitute theme_name with the theme name you want to fix. But if your theme is one you downloaded then it is already in your .themes folder. Now open your file manager and navigate to your home folder then do to .themes folder. If you can’t see it then you probably have disabled the “View hidden files” option. Press Ctrl+H to enable it. Now in .themes you’ll find your previously copied theme folder there, enter it then go to gtk-2.0 folder. There you may find a file named “panel.rc”, which is a configuration file that tells your panel how it should look like. If you find it there then rename it to “panel.rc.bak”. If you don’t find don’t panic! There’s nothing wrong with your system, it’s just that your theme decided to put the panel configurations in the “gtkrc” file. Open this file with your favorite text editor and at the end of the file there is line that looks like this “include “apps/gnome-panel.rc””. Comment out this line by putting a hash mark # in front of it. Now it should look like this “# include “apps/gnome-panel.rc”” Save and exit the text editor. Now change your theme to any other one then switch back to the one you edited. Now your panel should look like this: Stay tuned for the second part in the series, where we’ll cover how to change the color and fonts on your panels. Latest Features How-To Geek ETC How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The Legend of Zelda – 1980s High School Style [Video] Suspended Sentence is a Free Cross-Platform Point and Click Game Build a Batman-Style Hidden Bust Switch Make Your Clock Creates a Custom Clock for your Android Homescreen Download the Anime Angels Theme for Windows 7 CyanogenMod Updates; Rolls out Android 2.3 to the Less Fortunate

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  • Why should I -minus flags of eselect profile? [closed]

    - by Xsi
    Why not just disable profile and add + + + , and thats it? Rationale. Could I ask ??? second question: where is there a short YES\NO Questions & Answers service? My questions were a subject to closing and deletion at Unix&Linux (as they were not real - we know perfectly admins can't answer and think to help others), but they were long forming in my head, since I'm a very novice user to Linux. My questions were some of that size and were from my point, all-specific, they were not fault ones, but knowledge q's (not to fault), although some not banned questions of others are as short as a line (U&L).

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  • Booting sequence. Ubuntu 12.04 installation and cohabitation with former OSes

    - by Stephane Rolland
    I am on the brink of installing Ubuntu 12.04 Precise Pengolin on the first primary partition of my hard-drive. (A day in History for me since I had always kept a MS windows at this first place). But I have some fears: This is my last computer available (In the past I used to have 2 or even 3 machines so I could always un/plug HDs for recovery operations and rescue) The current booting sequence is not straight forard. So as to explain the boot sequence let me briefly sum-up the history of this laptop computer. It was a dedicated Windows Vista computer. 1st and only Primary partition. Then I added Windows 7 (on the 2nd primary partition) letting the Windows Vista Boot Loader manage the boot sequence. Then I added Ubuntu 10.04 Lucid Lynx on the 1st sub-partition of the Extended Partitionm asking Grub to be the boot loader. But when I ask Grub to launch windows it launches the Vista BootLoader that manages the choice betzeen Vista and 7. So in theory Grub is on the MasterBootRecord - though I understand where the Vista BootLoader remains. Now, I will no longer use the Ubuntu 10.04 ( on extended partition) and also the Windows vista (on the first primary partition). I will install Ubuntu 12.04 on the First Primary, asking it to install a new bootloader. I want to keep the Windows 7 that is already on the Second Primary partition. And I want it to be loaded by the Ubuntu Boot loader(I don4t knoz zhich is included in this version)... And I am afraid the last point will not work.

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  • Is mocking for unit testing appropriate in this scenario?

    - by Vinoth Kumar
    I have written around 20 methods in Java and all of them call some web services. None of these web services are available yet. To carry on with the server side coding, I hard-coded the results that the web-service is expected to give. Can we unit test these methods? As far as I know, unit testing is mocking the input values and see how the program responds. Are mocking both input and ouput values meaningful? Edit : The answers here suggest I should be writing unit test cases. Now, how can I write it without modifying the existing code ? Consider the following sample code (hypothetical code) : public int getAge() { Service s = locate("ageservice"); // line 1 int age = s.execute(empId); // line 2 return age; // line 3 } Now How do we mock the output ? Right now , I am commenting out 'line 1' and replacing line 2 with int age= 50. Is this right ? Can anyone point me to the right way of doing it ?

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  • Ubuntu and racadm

    - by lmqcn
    I recently purchased a used poweredge 1850 server and it came with a DRAC card. After wiping the HDD and installing ubuntu server 12.04.3 LTS amd64 on it, I am now trying to gain access to the DRAC which I believe is version 4. I have properly configured the DRAC to use it's own IP on my LAN and when I point my browser to the IP address, I am greeted with the DRAC login page (it has the dell logo and everything). However, after trying the credentials of root/calvin, I was denied access. So I think that the previous owners had set their own password. After doing some reading, it appears that I can reset the credentials to the default using racadm config -g cfgUserAdmin -o cfgUserAdminPassword -i 1 newpassword but upon entering the command, I get this error: bash: /usr/sbin/racadm: No such file or directory This holds true even if I run sudo su prior to running the racadm command. If, however, I run sudo racadm config -g cfgUserAdmin -o cfgUserAdminPassword -i 1 newpassword there are no errors. Yet, when I try to log into the DRAC via the web interface using the credentials of root/newpassword I am still not granted access. I installed the dell utilities via the guide at https://wiki.ubuntu.com/HardwareSupportMachinesServersDellNotes. I first tried to install the 64 bit version that is on the dell repositories, but after that was unsuccessful, I just followed the guide verbatim. No errors were produced in either case. I even followed the information at the bottom of the guide by executing sudo pppd /dev/ttyS1 1382400 crtscts noipdefault noauth lock persist connect 'chat -v "" CLIENT CLIENTSERVER "\\c"' but obviously, replacing the /dev/ttyS1 with the correct information for my system. ls -l /usr/sbin/ | grep racadm yields -rwxr-xr-x 1 root root 87930 Sep 16 04:03 racadm I have tried these credentials after each attempt of changing the password: root/calvin root/newpassword admin/calvin admin/newpassword All have been unsuccessful. What is the next course of action that I should take?

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  • Decoupling software components via naming convention

    - by csteinmueller
    I'm currently evaluating alternatives to refactor a drivermanagement. In my multitier architecture I have Baseclass DAL.Device //my entity Interfaces BL.IDriver //handles the dataprocessing between application and device BL.IDriverCreator //creates an IDriver from a Device BL.IDriverFactory //handles the driver creation requests Every specialization of Device has a corresponding IDriver implementation and a corresponding IDriverCreator implementation. At the moment the mapping is fix via a type check within the business layer / DriverFactory. That means every new driver needs a) changing code within the DriverFactory and b) referencing the new IDriver implementation / assembly. On a customers point of view that means, every new driver, used or not, needs a complex revalidation of their hardware environment, because it's a critical process. My first inspiration was to use a caliburn micro like nameconvention see Caliburn.Micro: Xaml Made Easy BL.RestDriver BL.RestDriverCreator DAL.RestDevice After receiving the RestDevicewithin the IDriverFactory I can load all driver dlls via reflection and do a namesplitting/comparing (extracting the xx from xxDriverCreator and xxDevice) Another idea would be a custom attribute (which also leads to comparing strings). My question: is that a good approach above layer borders? If not, what would be a good approach?

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  • Where could Distributed Version Control Systems currently be in Gartner's hype cycle?

    - by dukeofgaming
    Edit: Given the recent downvoting (+8/-6 at this point) it was made clear to me that Gartner's lifecycle is a biased metric from a programmer's perspective. This is something that is part of a paper I'm going to present to management, and management types are part of Gartner's audience. Giving DVCS exposure & enthusiasm (that "could" be deemed as hype, or at least attacked as such), think about the following question when reading this one: "how could I use Gartner's hype cycle to convince management that DVCSs are ready (or ready-enough) for us, and that it is not just hype" Just asking if DVCSs is hype wouldn't be constructive, Gartner's hype cycle is a more objective instrument than just asking that (even if this instrument is regarded as biased). If you know any other instrument please, by all means, mention it. Edit #2: I agree that Gartner's Life Cycle is not for every technology, but I consider it may have generated enough buzz to be considered hype by some, so it maybe deserves to be at least evaluated/pondered as such by using this instrument in order to prove/disprove it to whatever degree. I'm an advocate of DVCS, BTW. I'm doing research for a whitepaper I'm writing in favor of DVCS adoption at company and I stumbled upon the concept of social proof. I want to prove that the social proof of DVCS adoption is not necessarily cargo cult and doing further research I now stumbled upon Gartner's hype cycle which describes technology maturity in 5 phases. My question is: what could be an indicator of the current location of Distributed Version Control Systems (I mean git, mercurial, bazaar, etc. in general) at a particular phase in the hype cycle?... in other (less convoluted) words, would you say that currently expectations of DVCSs are a) starting, b)inflated, c)decreasing (disillusionment), d)increasing (enlightenment) or e)stabilizing (mature) and (more importantly) why? I know it is a hard question and there is subjectivity involved, but I'll grant the answer (and the traditional cookie) to the clearest argument/evidence for a particular phase.

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  • How to make the run button run the project, not the file, in Eclipse

    - by Roy T.
    I'm using the Spring IDE, a variant of Eclipse to create a Java project. One big irritation I have is that when I press the run button Eclipse tries to run the current file, which usually fails because it doesn't have a main method. I've set up run configurations in the hope that would make the play button default to the run configuration instead of the current file, but that doesn't work either. Now to run my application correctly I have to press the little arrow next to play, select my favorite run configuration and then it works, this is only two extra clicks but it's tedious, the button is small and I feel like I shouldn't have to perform these extra steps. I mean what is the point of run configurations and projects if it still tries to run a file by default? Even more preferably I wouldn't even want to touch the mouse but just press Ctrl+F11, but this has the same behavior. All above applies to debugging as well btw. So my question is this: how do I make the run and debug buttons (and their short keys) default to the project's run configuration instead of to trying (and failing) to run only the current file? Much like it is in Visual Studio and other IDEs?

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  • Steam on 64-bit 14.04: need some help, missing a few 32-bit libs

    - by YellowShark
    Steam says I'm missing the following libs, I'm hoping someone can help me get things in better shape: xyz@abc:~$ STEAM_RUNTIME=0 steam Running Steam on ubuntu 14.04 64-bit STEAM_RUNTIME is disabled by the user Error: You are missing the following 32-bit libraries, and Steam may not run: libpangoft2-1.0.so.0 libpango-1.0.so.0 libgtk-x11-2.0.so.0 libgdk_pixbuf-2.0.so.0 Installing breakpad exception handler for appid(steam)/version(1401381906_client) Installing breakpad exception handler for appid(steam)/version(1401381906_client) [2014-06-11 20:45:39] Startup - updater built May 29 2014 09:19:23 [2014-06-11 20:45:39] Verifying installation... [2014-06-11 20:45:39] Verification complete [2014-06-11 20:45:42] Shutdown I tried installing the following i386 packages: libpango-1.0-0:i386, libpangoft2-1.0-0:i386, and libgdk-pixbuf2.0-0:i386, and symlinking the .so files (from usr/lib/i386whatever../) into the ~/.local/share/Steam/ubuntu12_32/ folder, but wasn't able to find the right match for the gtk-x11 lib, and ultimately would up with a different, but still non-working situation. So I've back-tracked to this point, and have removed those i386 packages for now. It's worth noting thatSteam runs if I don't use STEAM_RUNTIME=0. Also, Steam seemed to "recognize" the i386 version of the libpango & libpangoft2 libs after I symlinked them into place, during the course of my troubleshooting; when I would rerun STEAM_RUNTIME=0 steam, it wouldn't list those two items as missing anymore. Instead though, I had a bunch of gtk-related issues, something about overlay-scrollbar not available, as well as warnings that it can't find the murrine engine... a whole bunch of stuff that sounded like I'd gone too far down the wrong path. Anyhow, any help sorting this out would be appreciated, and thanks!

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  • SBS 2008 DNS issues in BPA

    - by evesirim
    I'm gettng constant Critical Issue events in the Small Business Server Best Practices Analyser & resulting SBS Console reports that begin "The DNS client is not configured to point only to the internal IP address of the server.". When I check the DNS Manager, there are two separate IPs listed, one ***.***.***.2 and the other ***.***.***.28. I have checked online after an ipconfig /all and have found the reason for this to be that the second IP is created by DHCP for RAS & VPN purposes. It seems to cause no conflicts of any detrimental result apart from constantly sending me error messages and alerted reports. Does anyone know of a way that I can change settings somewhere so that Windows accepts this second IP, or at least stops alerting me of its prescence? Perhaps a registry hack of some kind...? Many thanks in advance

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  • How do I convince my team that a requirements specification is unnecessary if we adopt user-stories?

    - by Nupul
    We are planning to adopt user-stories to capture stakeholder 'intent' in a lightweight fashion rather than a heavy SRS (software requirements specifications). However, it seems that though they understand the value of stories, there is still a desire to 'convert' the stories into an SRS-like language with all the attributes, priorities, input, outputs, source, destination etc. User-stories 'eliminate' the need for a formal SRS like artifact to begin with so what's the point in having an SRS? How should I convince my team (who are all very qualified CS folks by the way - both by education and practice) that the SRS would be 'eliminated' if we adopted user-stories for capturing the functional requirements of the system? (NFRs etc can be captured too, but that's not the intent of the question). So here's my 'work-flow' argument: Capture initial requirements as user-stories and later elaborate them to use-cases (which are required to be documented at a low level i.e. describing interactions with the UI prototypes/mockups and are a deliverable post deployment). Thus going from user-stories to use-cases rather than user-stories to SRS to use-cases. How are you all currently capturing user-stories at your workplace (if at all) and how do you suggest I 'make a case' for absence of SRS in presence of user-stories?

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  • Multiple Subnets on home network... would this work?

    - by rockinthesixstring
    We are looking at renting out the basement suit in our home and want to offer internet as part of the package. I however do not want the downstairs tennent to have access to our network (home office = private data). We currently have a pfsense firewall as our gateway and a Windows Server 2003 box is doing our primary DHCP (192.168.0.0/24) and DNS. Here's what I'd like to do... I'd like to setup another subnet on the DHCP server (192.168.1.0/24), and hook in another wireless router (as access point only) and address it as 192.168.1.1... from there the router will hook into our primary switch and then out through the firewall. Will Server 2003 (If I add a 192.168.1.x/24 IP to the nic) serve DHCP to the devices that connect to the new router, and will it isolate that from our network? Thanks in advance... I'm very new to multiple subnets.

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  • SSH tunnel RDP through gateway server outside the network?

    - by Mike
    I need to access a PC via RDP that is behind a firewall. There's no way to connect to it directly that I know of. What I'd like to do is SSH from that remote PC to my home Ubuntu server, then connect to the remote PC using my home PC with the Ubuntu server as a gateway. I've tried SSH from remote PC to Ubuntu server, tunneling remote port 3389 to 127.0.0.1:3389, then SSH from home PC to Ubuntu server, tunneling local port 13389 to remote port 3389. At that point I try to RDP into: 127.0.0.1:13389, 127.0.0.2:13389, :3389 - no dice. I suppose I could simply set up an SSH server on my home PC and SSH from remote PC into home PC and then establish the tunnel that way, but I'd rather not go through the hassle of installing and configuring an ssh server on my home PC. I know LogMeIn would work here, but I don't want to go that route for various reasons. Any ideas? Thanks!

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  • LibGdx efficient data saving/loading?

    - by grimrader22
    Currently, my LibGDX game consists of a 512 x 512 map of Tiles and entities such as players and monsters. I am wondering how to efficiently save and load the data of my levels. At the moment I am using JSON serialization for each class I want to save. I implement the Json.Serializable interface for all of these classes and write only the variables that are necessary. So my map consists of 512 x 512 tiles, that's 260,000 tiles. Each tile on the map consists of a Tile object, which points to some final Tile object like a GRASS_TILE or a STONE_TILE. When I serialize each level tile, the final Tile that it points to is re-serialized over and over again, so if I have 100 Tiles all pointing to GRASS_TILE, the data of GRASS_TILE is written 100 times over. When I go to load/deserialize my objects, 100 GrassTile objects are created, but they are each their own object. They no longer point to the final tile object. I feel like this reading/writing files very slow. If I were to abandon JSON serialization, to my knowledge my next best option would be saving the level data to a sql database. Unless there is a way to speed up serializing/deserializing 260,000 tiles I may have to do this. Is this a good idea? Could I really write that many tiles to the database efficiently? To sum all this up, I am trying to save my levels using JSON serialization, but it is VERY slow. What other options do I have for saving the data of so many tiles. I also must note that the JSON serialization is not slow on a PC, it is only VERY slow on a mobile device. Since file writing/reading is so slow on mobile devices, what can I do?

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  • Talking JavaOne with Rock Star Charles Nutter

    - by Janice J. Heiss
    JavaOne Rock Stars, conceived in 2005, are the top rated speakers from the JavaOne Conference. They are awarded by their peers who through conference surveys recognize them for their outstanding sessions and speaking ability. Over the years many of the world’s leading Java developers have been so recognized.We spoke with distinguished Rock Star, Charles Nutter. A JRuby Update from Charles NutterCharles Nutter of Red Hat is well known as a lead developer of JRuby, a Ruby implementation of Java that is tightly integrated with Java to allow for the embedding of the interpreter into any Java application with full two-way access between the Java and the Ruby code. Nutter is giving the following sessions at this year’s JavaOne: CON7257 – “JVM Bytecode for Dummies (and the Rest of Us Too)” CON7284 – “Implementing Ruby: The Long, Hard Road” CON7263 – “JVM JIT for Dummies” BOF6682 – “I’ve Got 99 Languages, but Java Ain’t One” CON6575 – “Polyglot for Dummies” (Both with Thomas Enebo) I asked Nutter, to give us the latest on JRuby. “JRuby seems to have hit a tipping point this past year,” he explained, “moving from ‘just another Ruby implementation’ to ‘the best Ruby implementation for X,’ where X may be performance, scaling, big data, stability, reliability, security, and a number of other features important for today's applications. We're currently wrapping up JRuby 1.7, which improves support for Ruby 1.9 APIs, solves a number of user issues and concurrency challenges, and utilizes invokedynamic to outperform all other Ruby implementations by a wide margin. JRuby just gets better and better.” When asked what he thought about the rapid growth of alternative languages for the JVM, he replied, “I'm very intrigued by efforts to bring a high-performance JavaScript runtime to the JVM. There's really no reason the JVM couldn't be the fastest platform for running JavaScript with the right implementation, and I'm excited to see that happen.”And what is Nutter working on currently? “Aside from JRuby 1.7 wrap-up,” he explained, “I'm helping the Hotspot developers investigate invokedynamic performance issues and test-driving their new invokedynamic code in Java 8. I'm also starting to explore ways to improve the general state of dynamic languages on the JVM using JRuby as a guide, and to help the JVM become a better platform for all kinds of languages.” Originally published on blogs.oracle.com/javaone.

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  • Tuning Default WorkManager - Advantages and Disadvantages

    - by Murali Veligeti
    Before discussing on Tuning Default WorkManager, lets have a brief introduction on What is Default WorkManger Before Weblogic Server 9.0 release, we had the concept of Execute Queues. WebLogic Server (before WLS 9.0), processing was performed in multiple execute queues. Different classes of work were executed in different queues, based on priority and ordering requirements, and to avoid deadlocks. In addition to the default execute queue, weblogic.kernel.default, there were pre-configured queues dedicated to internal administrative traffic, such as weblogic.admin.HTTP and weblogic.admin.RMI.Users could control thread usage by altering the number of threads in the default queue, or configure custom execute queues to ensure that particular applications had access to a fixed number of execute threads, regardless of overall system load. From WLS 9.0 release onwards WebLogic Server uses is a single thread pool (single thread pool which is called Default WorkManager), in which all types of work are executed. WebLogic Server prioritizes work based on rules you define, and run-time metrics, including the actual time it takes to execute a request and the rate at which requests are entering and leaving the pool.The common thread pool changes its size automatically to maximize throughput. The queue monitors throughput over time and based on history, determines whether to adjust the thread count. For example, if historical throughput statistics indicate that a higher thread count increased throughput, WebLogic increases the thread count. Similarly, if statistics indicate that fewer threads did not reduce throughput, WebLogic decreases the thread count. This new strategy makes it easier for administrators to allocate processing resources and manage performance, avoiding the effort and complexity involved in configuring, monitoring, and tuning custom executes queues. The Default WorkManager is used to handle thread management and perform self-tuning.This Work Manager is used by an application when no other Work Managers are specified in the application’s deployment descriptors. In many situations, the default Work Manager may be sufficient for most application requirements. WebLogic Server’s thread-handling algorithms assign each application its own fair share by default. Applications are given equal priority for threads and are prevented from monopolizing them. The default work-manager, as its name tells, is the work-manager defined by default.Thus, all applications deployed on WLS will use it. But sometimes, when your application is already in production, it's obvious you can't take your EAR / WAR, update the deployment descriptor(s) and redeploy it.The default work-manager belongs to a thread-pool, as initial thread-pool comes with only five threads, that's not much. If your application has to face a large number of hits, you may want to start with more than that.Well, that's quite easy. You have  two option to do so.1) Modify the config.xmlJust add the following line(s) in your server definition : <server> <name>AdminServer</name> <self-tuning-thread-pool-size-min>100</self-tuning-thread-pool-size-min> <self-tuning-thread-pool-size-max>200</self-tuning-thread-pool-size-max> [...] </server> 2) Adding some JVM parameters Add the following system property in setDomainEnv.sh/setDomainEnv.cmd or startWebLogic.sh/startWebLogic.cmd : -Dweblogic.threadpool.MinPoolSize=100 -Dweblogic.threadpool.MaxPoolSize=100 Reboot WLS and see the option has been taken into account . Disadvantage: So far its fine. But here there is an disadvantage in tuning Default WorkManager. Internally Weblogic Server has many work managers configured for different types of work.  if we run out of threads in the self-tuning pool(because of system property -Dweblogic.threadpool.MaxPoolSize) due to being undersized, then important work that WLS might need to do could be starved.  So, while limiting the self-tuning would limit the default WorkManager and internally it also limits all other internal WorkManagers which WLS uses.So the best alternative is to override the default WorkManager that means creating a WorkManager for the Application and assign the WorkManager for the application instead of tuning the Default WorkManager.

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  • windows service "soft link"

    - by fred smith
    I would like to be able to have a nice management tool to allow the rollout of different versions of a windows service over time. for example I would like to deploy my software (windows service) in version numbered folders, e.g. c:\wss\v1.0 c:\wss\v1.1 etc however I dont want to have to reinstall the windows service each time but rather would like to be able to easily point the windows service manager to the new folder. Are there tools to get this done? NB: I have used Windows Junctions before (from sysinternals) however I am wondering if there is a nice GUI tool to do this.

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  • Gimpshop 2.8. Available for Win & Mac. No Linux version?

    - by Jorge M. Treviño
    Finally got around to upgrading 12.04 to 12.10. One of the nice things about the new version is that Gimp 2.8 is in the repositories. Installed and it's a far cry from the 2.2, 2.4 and 2.6 versions which were —at least from my untrained point of view– next to unusable. Now 2.8 is a much more intuitive, for Photoshop users at least, and I'm trying to really learn it. Browsing around, I found that there's s new version of Gimpshop, something that was a sorely amateurish attempt to a PS interface over an old Gimp version and sure to mess up your system. Seeing "2.8" prominently displayed in the page, I decided to try the Windows version. Oddly, there's a Mac version too but no Linux one. The link directs one to a non-existent file in one of the cloud storage sites. After the Win version was installed, I fired it up and, surprise!, it's exactly the same as I can tell without diving into menus and dialogs, as the plain vanilla Ubuntu version I have installed. Can anybody shed light on what goes on here? Is this a scheme to get inadvertent users to install some "optional extras" that come with the installer? Very curious about it (thanks God I'm not a cat ).

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  • help with Outlook Exchange server and curl

    - by stib
    I work on a mac in a building full of PCs, and the IT department here doesn't have IMAP access turned on on the exchange servers. So I miss a lot of meetings because I don't get reminders because I access my mail via Outlook Web access. I had written a script to scrape my Outlook Web Access calendar and turn it into iCal format, so I could get my reminders via thunderbird or iCal.app. It basically downloaded the calendar page via curl, parsed the HTML and reformatted all the appointments as ical. it wasn't elegant, but it worked. Then they changed to outlook 2007, and it doesn't work any more. I have a sketchy knowledge of curl, and almost zero knowledge of how outlook works. Can anyone point me towards a reference for getting calendar info out of an exchange server without using outlook? If I can configure curl to get the HTML I will be happy, but if there's a more elegant way, such as getting the calendar info as XML I'll be delirious.

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  • Windows 2008 File Share

    - by user36540
    Hi, I have 3 Windows 2008 Standard servers in my system with no domain controller. Two of the servers are running a NLB cluster and the third server is a file server that the web servers connect to. I want to store my source code on the file server and point the IIS config to the network file share. The web sites also need access to a file share on the file server. I was able to share the network drive and access while logged into either of the web servers but my web apps are unable to access the file share - I assume due to permissions. Does anybody know the correct way to do this? Thanks, Chris

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  • Making an interactive 2D map

    - by Chad
    So recently I have been working on a Legend of Zelda: A Link to the Past clone, and I am wondering how I could handle certain map interactions (like cutting grass, lifting rocks, etc). The way I am currently doing the tilemap is with 2 PNGs. The first is the "tilemap" where each pixel represents a 16x16 tile and the (red, green) values are the (x, y) coords for the tile in the second PNG (the "tileset"). I am then using the blue channel to store collision data. Each tile is split into 4 8x8 tiles and represented by a 2 bit value (0 = empty, 1 = Jumpdown point, 2 = unused right now, 3 = blocking). 4 of these 2 bit values make up the full blue channel (1 byte). So collisions work great, and I am moving on to putting interactive units on the level; but I am not sure what a good way is to do it. I have experimented with spawning an entity for each grass and rock, but there are just WAY to many; FPS just dies even if I confine it to the current "zone" the user is in (for those who remember LTTP it had zones you moved between). It does make a difference that this is a browser-based JavaScript game. tl;dr: What is a good way to have an interactive map without using full blown entities for each interactive item?

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  • Portable scripting language for a multi-server admin?

    - by Aaron
    Please Note: Portable as in portableapps.com, not the traditional definition. Originally posted on stackoverflow.com, asking here at another user's suggestion. I'm a DBA and sysadmin, mostly for Windows machines running SQL Server. I'm looking for a programming/scripting language for Windows that doesn't require Admin access or an installer, needing no install process other than expanding it into a folder. My intent is to have a language for automation on which I can standardize. Up to this point, I've been using a combination of batch files and Unix shell, using sh.exe from UnxUtils but it's far from a perfect solution. I've evaluated a handful of options, all of them have at least one serious shortcoming or another. I have a strong preference for something open source or dual license, but I'm more interested in finding the right tool than anything else. Not interested that anything that relies on Cygwin or Java, but at this point I'd be fine with something that needs .NET. Requirements: Manageable footprint (1-100 files, under 30 MB installed) Run on Windows XP and Server (2003+) No installer (exe, msi) Works with external pipes, processes, and files Support for MS SQL Server or ODBC connections Bonus Points: Open Source FFI for calling functions in native DLLs GUI support (native or gtk, wx, fltk, etc) Linux, AIX, and/or OS X support Dynamic, object oriented and/or functional, interpreted or bytecode compiled; interactive development Able to package or compile scripts into executables So far I've tried: Ruby: 148 MB on disk, 23000 files Portable Python: 54 MB on disk, 2800 files Strawberry Perl: 123 MB on disk, 3600 files REBOL: Great, except closed source and no MSSQL or ODBC in free version Squeak Smalltalk: Great, except poor support for scripting ---- cut: points of clarification ---- Why all the limitations? I realize some of my criteria seem arbitrarily confining. It's primarily a product my environment. I work as a SQL Server DBA and backup Unix admin at a division of a large company. In addition to near a hundred boxes running some version or another of SQL Server on Windows, I also support the SQL Server Express Edition installs on over a thousand machines in the field. Because of our security policies, I don't login rights on every machine. Often enough, an issue comes up and I'm given local Admin for some period of time. Often enough, it's some box I've never touched and don't have my own environment setup yet. I may have temporary admin rights on the box, but I'm not the admin for the machine- I'm just the DBA. I've no interest in stepping on the toes of the Windows admins, nor do I want to take over any of their duties. If I bring up "installing" something, suddenly it becomes a matter of interest for Production Control and the Windows admins; if I'm copying up a script, no one minds. The distinction may not mean much to the readers, but if someone gets the wrong idea I've suddenly got a long wait and significant overhead before I can get the tool installed and get the problem solved. That's why I want something that can be copied and run in the manner of a portable app. What about the small footprint? My company has three divisions, each in a different geographical location, and one of them is a new acquisition. We have different production control/security policies in each division. I support our MSSQL databases in all three divisions. The field machines are spread around the US, sometimes connecting to the VPN over very slow links. Installing Ruby \using psexec has taken a long time over these connections. In these instances, the bigger time waster seems to be archives with thousands and thousands of files rather than their sheer size. You could say I'm spoiled by Unix, where the admins usually have at least some modern scripting language installed; I'd use PowerShell, but I don't know it well and more importantly it isn't everywhere I need to work. It's a regular occurrence that I need to write, deploy and execute some script on short notice on some machine I've never on which logged in. Since having Ruby or something similar installed on every machine I'll ever need to touch is effectively impossible because of the approvals, time and and Windows admin labor needed I makes more sense find a solution that allows me to work on my own terms.

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  • Advantages of Hudson and Sonar over manual process or homegrown scripts.

    - by Tom G
    My coworker and I recently got into a debate over a proposed plan at our workplace. We've more or less finished transitioning our Java codebase into one managed and built with Maven. Now, I'd like for us to integrate with Hudson and Sonar or something similar. My reasons for this are that it'll provide a 'zero-click' build step to provide testers with new experimental builds, that it will let us deploy applications to a server more easily, that tools such as Sonar will provide us with well-needed metrics on code coverage, Javadoc, package dependencies and the like. He thinks that the overhead of getting up to speed with two new frameworks is unacceptable, and that we should simply double down on documentation and create our own scripts for deployment. Since we plan on some aggressive rewrites to pay down the technical debt previous developers incurred (gratuitous use of Java's Serializable interface as a file storage mechanism that has predictably bit us in the ass) he argues that we can document as we go, and that we'll end up changing a large swath of code in the process anyways. I contend that having accurate metrics that Sonar (or fill in your favorite similar tool) provide gives us a good place to start for any refactoring efforts, not to mention general maintenance -- after all, knowing which classes are the most poorly documented, even if it's just a starting point, is better than seat-of-the-pants guessing. Am I wrong, and trying to introduce more overhead than we really need? Some more background: an alumni of our company is working at a Navy research lab now and suggested these two tools in particular as one they've had great success with using. My coworker and I have also had our share of friendly disagreements before -- he's more of the "CLI for all, compiles Gentoo in his spare time and uses Git" and I'm more of a "Give me an intuitive GUI, plays with XNA and is fine with SVN" type, so there's definitely some element of culture clash here.

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