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  • Why the system information message when accessing an Ubuntu server doesn't match free -m?

    - by Andres
    Each time I SSH into my AWS Ubuntu servers I see a system information message, showing load, memory usage and packages available to install, like this: Welcome to Ubuntu 12.04.3 LTS (GNU/Linux 3.2.0-51-virtual x86_64) * Documentation: https://help.ubuntu.com/ System information as of Sun Nov 10 18:06:43 EST 2013 System load: 0.08 Processes: 127 Usage of /: 4.9% of 98.43GB Users logged in: 1 Memory usage: 69% IP address for eth0: 10.236.136.233 Swap usage: 100% Graph this data and manage this system at https://landscape.canonical.com/ 13 packages can be updated. 0 updates are security updates. Get cloud support with Ubuntu Advantage Cloud Guest http://www.ubuntu.com/business/services/cloud Use Juju to deploy your cloud instances and workloads. https://juju.ubuntu.com/#cloud-precise *** /dev/xvda1 will be checked for errors at next reboot *** *** System restart required *** My question is about the memory percentage shown. In this case, it's showing a 69% of memory usage, but since the swap usage was 100% I checked it by myself. So when I run free -m I get this: total used free shared buffers cached Mem: 1652 1635 17 0 4 29 -/+ buffers/cache: 1601 51 Swap: 895 895 0 And that's of course closer to 100% than to 69%

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  • Python import error: Symbol not found, but the symbol is present in the file

    - by Autopulated
    I get this error when I try to import ssrc.spread: ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/ssrc/_spread.so, 2): Symbol not found: __ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE The file in question (_spread.so) includes the symbol: $ nm _spread.so | grep _ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE U __ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE U __ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE (twice because the file is a fat ppc/x86 binary) The archive header information of _spread.so is: $ otool -fahv _spread.so Fat headers fat_magic FAT_MAGIC nfat_arch 2 architecture ppc7400 cputype CPU_TYPE_POWERPC cpusubtype CPU_SUBTYPE_POWERPC_7400 capabilities 0x0 offset 4096 size 235272 align 2^12 (4096) architecture i386 cputype CPU_TYPE_I386 cpusubtype CPU_SUBTYPE_I386_ALL capabilities 0x0 offset 241664 size 229360 align 2^12 (4096) /Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/ssrc/_spread.so (architecture ppc7400): Mach header magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC PPC ppc7400 0x00 BUNDLE 10 1420 NOUNDEFS DYLDLINK BINDATLOAD TWOLEVEL WEAK_DEFINES BINDS_TO_WEAK /Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/ssrc/_spread.so (architecture i386): Mach header magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC I386 ALL 0x00 BUNDLE 11 1604 NOUNDEFS DYLDLINK BINDATLOAD TWOLEVEL WEAK_DEFINES BINDS_TO_WEAK And my python is python 2.6.4: $ which python | xargs otool -fahv Fat headers fat_magic FAT_MAGIC nfat_arch 2 architecture ppc cputype CPU_TYPE_POWERPC cpusubtype CPU_SUBTYPE_POWERPC_ALL capabilities 0x0 offset 4096 size 9648 align 2^12 (4096) architecture i386 cputype CPU_TYPE_I386 cpusubtype CPU_SUBTYPE_I386_ALL capabilities 0x0 offset 16384 size 13176 align 2^12 (4096) /Library/Frameworks/Python.framework/Versions/2.6/bin/python (architecture ppc): Mach header magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC PPC ALL 0x00 EXECUTE 11 1268 NOUNDEFS DYLDLINK TWOLEVEL /Library/Frameworks/Python.framework/Versions/2.6/bin/python (architecture i386): Mach header magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC I386 ALL 0x00 EXECUTE 11 1044 NOUNDEFS DYLDLINK TWOLEVEL There seems to be a difference in the ppc architecture in the files, but I'm running on an intel, so I don't see why this should cause a problem. So why might the symbol not be found?

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  • Procurement Index: DOC ID 1391332.2

    - by Oracle_EBS
    Visit the Procurement Index for one stop shopping from DOC ID 1391332.2 which is the jumping off point to our Product Information Centers and Search Helpers for each of our product groups; including, Purchasing, iProcurement and iSupplier Portal. Use Product Information Centers for issues that you can proactively resolve (get solutions before processes fail), and to be proactive with new notes and alerts. Search Helpers are guides for specific issues providing a collection of available solution documents, by the symptoms you enter. For example do you have a purchase order stuck in process or are you getting the RVTII-060 error when receiving? Check out our Search Helpers for possible solutions. Below we have drilled down on the Purchasing link taking us to the Purchasing Information Center which then provides the links to our Product Information centers and Search Helpers for our various components; Accounting, Approvals, Purchase Orders, Receiving and Requisitions. Drilling down further on the Approvals Information Center we get a taste of the information provided. This is dynamic and provides a wealth of information.

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  • Is this a situation where Qt Model/View architecture is not useful?

    - by csmithmaui
    Hi, I am writing a GUI based application where I read a string of values from serial port every few seconds and I need to display most of the values in some type graphical indicator(I was thinking of QprogressBar maybe) that displays the range and the value. Some of the other data that I am parsing from the string are the date and fault codes. Also, the data is hierarchical. I wanted to use the model/view architecture of Qt because I have been interested in MVC stuff for a while but have never quite wrapped my brain around how to implement it very well. As of now, I have subclassed QAbstractItemModel and in the model I read the serial port and wrap the items parsed from the string in a Tree data structure. I can view all of the data in a QtreeView with no issues. I have also began to subclass QAbstractItemView to build my custom view with all of the Graphical Indicators and such. This is where I am getting stuck. It seems to me that in order for me to design a view that knows how to display my custom model the view needs to know exactly how all of the data in the model is organized. Doesn't that defeat the purpose of Model/View? The QTreeView I tested the model with is basically just displaying the model as it is setup in the Tree structure but I don't want to do that because the data is not all of the same type. Is the type of data or the way you would like to present it to the user a determining factor in whether or not you should use this architecture? I always assumed it was just always better to design in an MVC style. It seems to me like it might have been better to just subclass QWidget and then read in from the serial port and update all of subwidgets(graphical indicators, labels, etc...) from the subclass. Essentially, do everything in one class. Does anybody understand this issue that can explain to me either what I am missing or why I shouldn't be doing it this way. As of now I am a little confused. Thanks so much for any help!

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  • Is there any web service for getting tidal information?

    - by thor
    Has anyone come across a web service or plugin/code/calculation for getting information on tides - namely high and low tide times? I only need this information for one location (outwith the US) but I need it on an ongoing basis so a web service that I can hit once a day or something would be ideal.

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  • How I can get information about the scrollbars of an Webbrowser control instance or the IE Webrowser?

    - by Salvador
    I need to get information about the scrollbars (position, size, visibility) of a Webbrowser control of an external application, I tried using the GetScrollBarInfo function from my previous question, but the function always return false, I checked this function with another applications and works fine , but not with the IE or the Webbrowser control. So how I can get information about the scrollbars of an Webbrowser control instance or the IE Webbrowser?

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  • How to design the application to conform to the n-tier architecture? (Winform sample in .net with li

    - by AlexRednic
    Rather a simple question. But the implications are vast. Over the last few weeks I've been reading a lot of material about n-tier architecture and it's implementation in the .NET world. The problem is I couldn't find a relevant sample for Winforms with Linq (linq is the way to go for BLL right?). How did you guys manage to grasp the n-tier concept? Books, articles, relevant samples etc.

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  • Oracle: what information can I derive from the SCN?

    - by Mark Harrison
    Given an SCN (system change number), and assuming an SCN for which the data is still in the undo logs, what information about the SCN can I derive? of course, SCN_TO_TIMESTAMP() gives an approximate time the data was committed. Is there any other information I can derive? What transaction, what tables, what data were affected? etc?

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  • Is nginx / node.js / postgres a very scalable architecture?

    - by Luc
    I have an app running with: one instance of nginx as the frontend (serving static file) a cluster of node.js application for the backend (using cluster and expressjs modules) one instance of Postgres as the DB Is this architecture sufficient if the application needs scalability (this is only for HTTP / REST requests) for: 500 request per seconds (each requests only fetches data from the DB, those data could be several ko, and with no big computation needed after the fetch). 20000 users connected at the same time Where could be the bottlenecks ?

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  • Find Knowledge Quickly

    - by Get Proactive Customer Adoption Team
    Untitled Document Get to relevant knowledge on the Oracle products you use in a few quick steps! Customers tell us that the volume of search results returned can make it difficult to find the information they need, especially when similar Oracle products exist. These simple tips show you how to filter, browse, search, and refine your results to get relevant answers faster. Filter first: PowerView is your best friend Powerview is an often ignored feature of My Oracle Support that enables you to control the information displayed on the Dashboard, the Knowledge tab and regions, and the Service Request tab based on one or more parameters. You can define a PowerView to limit information based on product, product line, support ID, platform, hostname, system name and others. Using PowerView allows you to restrict: Your search results to the filters you have set The product list when selecting your products in Search & Browse and when creating service requests   The PowerView menu is at the top of My Oracle Support, near the title You turn PowerView on by clicking PowerView is Off, which is a button. When PowerView is On, and filters are active, clicking the button again will toggle Powerview off. Click the arrow to the right to create new filters, edit filters, remove a filter, or choose from the list of previously created filters. You can create a PowerView in 3 simple steps! Turn PowerView on and select New from the PowerView menu. Select your filter from the Select Filter Type dropdown list and make selections from the other two menus. Hint: While there are many filter options, selecting your product line or your list of products will provide you with an effective filter. Click the plus sign (+) to add more filters. Click the minus sign (-) to remove a filter. Click Create to save and activated the filter(s) You’ll notice that PowerView is On displays along with the active filters. For more information about the PowerView capabilities, click the Learn more about PowerView… menu item or view a short video. Browse & Refine: Access the Best Match Fast For Your Product and Task In the Knowledge Browse region of the Knowledge or Dashboard tabs, pick your product, pick your task, select a version, if applicable. A best match document – a collection of knowledge articles and resources specific to your selections - may display, offering you a one-stop shop. The best match document, called an “information center,” is an aggregate of dynamically updated links to information pertinent to the product, task, and version (if applicable) you chose. These documents are refreshed every 24 hours to ensure that you have the most current information at your fingertips. Note: Not all products have “information centers.” If no information center appears as a best match, click Search to see a list of search results. From the information center, you can access topics from a product overview to security information, as shown in the left menu. Just want to search? That’s easy too! Again, pick your product, pick your task, select a version, if applicable, enter a keyword term, and click Search. Hint: In this example, you’ll notice that PowerView is on and set to PeopleSoft Enterprise. When PowerView is on and you select a product from the Knowledge Base product list, the listed products are limited to the active PowerView filter. (Products you’ve previously picked are also listed at the top of the dropdown list.) Your search results are displayed based on the parameters you entered. It’s that simple! Related Information: My Oracle Support - User Resource Center [ID 873313.1] My Oracle Support Community For more tips on using My Oracle Support, check out these short video training modules. My Oracle Support Speed Video Training [ID 603505.1]

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