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• Why the amount of 'indexed' images can go down?

  - by Roman Matveev

  I have a site with several thousand of images. All those images included into the sitemap submitted to Google Webmaster Tools. The amount of 'submitted' images is OK, but the amount of 'indexed' is significantly lower than the amount of 'submitted' and it is going DOWN! I'd understand if not all of my images got indexed (however it is also not clear and very frustrating for me) but I can not understand how the indexing can go in the negative direction?! All the images stays on their places. And pages containing them stays unchanged. At least they intended to be. Any thoughts?

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• How to make the switch to C++11?

  - by Overv

  I've been programming in C++ for a while now, but mostly thinks centered around the low-level features of C++. By that I mean mostly working with pointers and raw arrays. I think this behavior is known as using C++ as C with classes despite me only having tried C recently for the first time. I was pleasantly surprised how languages like C# and Java hide these details away in convenient standard library classes like Dictionaries and Lists. I'm aware that the C++ standard library has many convenience containers like vectors, maps and strings as well and C++11 only adds to this by having std:: array and ranged loops. How do I best learn to make use of these modern language features and which are suitable for which moments? Is it correct that software engineering in C++ nowadays I'd mostly free of manual memory management? Lastly, which compiler should I use to make the most of the new standard? Visual Studio has excellent debugging tools, but even VS2012 seems to have terrible C++11 support.

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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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• Catalyst 12.1 for AGP card

  - by Brian

  I have a Radeon HD 4650 AGP card. The installation instructions at http://wiki.cchtml.com/index.php/Ubuntu_Oneiric_Installation_Guide download catalyst 12.1 However, there is no download available at http://support.amd.com/us/gpudownload/Pages/index.aspx for my AGP card. Only Windows drivers are available. Should I go ahead and use the guide and manually install 12.1? I assume it's not on the amd website for a reason, but I was wondering if anybody had any experience with this. Thanks!

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• Hostapd to connect laptop to Android

  - by Kmegamind

  i am trying to set up my laptop as an access point for my Android to use WiFi, so i knew that ubuntu sets the network as Ad-Hoc which is not discoverable by android, So i tried the method explained here -which i found on many other websites- but when i run hostapd.conf this error appears : nl80211: Failed to set interface wlan0 into AP mode nl80211 driver initialization failed. ELOOP: remaining socket: sock=4 eloop_data=0x8e488f8 user_data=0x8e48ea0 handler=0x807c5e0 ELOOP: remaining socket: sock=6 eloop_data=0x8e4aca8 user_data=(nil) handler=0x8086770 this is how my hostapd.conf looks like : interface=wlan0 driver=nl80211 ssid=Any_SSID_name hw_mode=g channel=1 macaddr_acl=0 auth_algs=1 ignore_broadcast_ssid=0 wpa=2 wpa_passphrase=Any_password wpa_key_mgmt=WPA-PSK wpa_pairwise=TKIP rsn_pairwise=CCMP and this is my wireless card info : description: Wireless interface product: BCM43225 802.11b/g/n vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:05:00.0 logical name: wlan0 version: 01 serial: 78:e4:00:73:51:f1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=brcmsmac driverversion=3.2.0-31-generic-pae firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:17 memory:f0300000-f0303fff

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• Periodic clicking sound from PC speaker

  - by John J. Camilleri

  After an update some months ago, my laptop has begun making a low, repeated clicking sound every few seconds. It is not being generated through the regular sound system, as altering the volume and even muting the sound does not make any difference. My regular audio works fine, by the way, so I am guessing this is some sort of PC speaker, since I cannot hear the click when I listen through regular headphones. Strangely, when I open the sound settings dialog the click magically disappears. I don't need to change any settings; if I simply leave the dialog open in the background then the problem disappears. Any ideas what this could be? I am running regular Ubuntu 12.04, and this is the output from lspci -v | grep -A7 -i "audio": 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) Subsystem: Acer Incorporated [ALI] Device 0349 Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at 54200000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel

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• Beginner Geek: Everything You Need To Know About Browser Extensions

  - by Chris Hoffman

  Browser extensions extend your web browser with additional features, modify web pages, and integrate your browser with the other services you use. This guide will introduce you to the world of browser extensions and help you get started. If you’re a geek, this stuff is obvious to you. We geeks take this for granted — we know exactly what browser extensions can do, when to use them, and what to avoid. But not everyone knows all this stuff.    

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• Humor in Documentation

  - by Lex Fridman

  Is a small amount of lighthearted wording or humor acceptable in source code documentation? For example, I have an algorithm that has a message hop around a graph (network) until its path forms a cycle. When this happens it is removed from the queue of the node it last resided on which removes it from memory. I write that in a comment, and finish the comment with "Rest in peace, little guy". That serves very little documenting purpose, but it cheers me up a bit, and I imagine it might cheer up other people I'm working with as they read through the code. Is this an acceptable practice, or should my in-code documentation resemble as much as possible the speeches of 2004 presidential candidate John Kerry? ;-)

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• Interacting with scene cocos2d

  - by cjroebuck

  I'm attempting to make my first cocos2d (for iphone) multiplayer game and having difficulty understanding how to interact with a scene once it is running. The game is a simple turn-based one and so I have a GameController class which co-ordinates the rounds. I also have a GameScene class which is the actual scene that is displayed during a round of the game. The basic interaction I need is for the GameController to be able to pass messages to the GameScene class.. such as StartRound/StopRound etc. The thing that complicates this is that I am loading the GameScene with a LoadingScene class which simply initialises the scene and replaces the current scene with this one, so there is no reference from GameController to GameScene, so passing messages is quite tricky. Does anyone have any ways to get around this, ideally I would still like to use a Loading class as it smooths out the memory hit when replacing scenes.

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• How to completely shutdown Ati card

  - by Celso

  I would like to know how do i prevent my Ati card from turning on when i enter on ubuntu 11.10. My bios only lets-me shutdown intel hd card or leave the both on but i want to know if is possbible to completely shutdown without having to access to the bios.( if is possible to turn of without using Vgaswitcheroo even better!) My system is: Acer 3820tg-- intel core i3 350M, 2.26 Ghz L3, Ati Mobility Radeon HD 5470 up to 2138 MB hyper memory, 13,3" HD LED LCD, 4gb DDR3, SSD corsair 60GB sata 2. EDIT: I now know what is missing on the answers! I edited /etc/rc.local file and added the next lines: Sleep 3 echo ON /sys/kernel/debug/vgaswitcheroo/switch echo IGD /sys/kernel/debug/vgaswitcheroo/switch echo OFF /sys/kernel/debug/vgaswitcheroo/switch And then save the file and restart. It should be possible to use only the intel card now. By the way, i didn't blacklisted the radeon driver because doing it make my ati card wake up. (use it at your own risk. i only tested in my system)

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• Lean/Kanban *Inside* Software (i.e. WIP-Limits, Reducing Queues and Pull as Programming Techniques)

  - by Christoph

  Thinking about Kanban, I realized that the queuing-theory behind the SW-development-methodology obviously also applies to concurrent software. Now I'm looking for whether this kind of thinking is explicitly applied in some area. A simple example: We usually want to limit the number of threads to avoid cache-thrashing (WIP-Limits). In the paper about the disruptor pattern[1], one statement that I found interesting was that producer/consumers are rarely balanced so when using queues, either consumers wait (queues are empty), or producers produce more than is consumed, resulting in either a full capacity-constrained queue or an unconstrained one blowing up and eating away memory. Both, in lean-speak, is waste, and increases lead-time. Does anybody have examples of WIP-Limits, reducing/eliminating queues, pull or single piece flow being applied in programming? http://disruptor.googlecode.com/files/Disruptor-1.0.pdf

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• What's the best platform for blogging about coding? [closed]

  - by timday

  I'm toying with starting an occasional blog for posting odd bits of coding related stuff (mainly C++, probably). Are there any platforms which can be recommended as providing exceptionally good support (e.g syntax highlighting) for posting snippets of code ? (Or any to avoid because posting mono-spaced font blocks of text is a pain). Outcome: I accepted Josh K's answer because what I actually ended up doing was realizing I was more interested in articles than a blog style, getting back into LaTeX (after almost 20 years away from it), using the "listings" package for code, and pushing the HTML/PDF results to my ISP's static-hosting pages. (HTML generated using tex4ht). Kudos to the answers mentioning Wordpress, Tumblr and Jekyll; I spent some time looking into all of them.

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• Why is Google still not indexing my !# website?

  - by Zubair

  I have been working on a website which uses #! (2minutecv.com), but even after 6 weeks of the site up and running and conforming to the Google hash bang guidelines stated here, you can still see that Google still hasn't indexed the site yet. For example if you use Google to search for 2MinuteCV.com benefits it does not find this page which is referenced from the homepage. Can anyone tell me why Google isn't indexing this website? Update: Thanks for al lthe help with this answer. So just to make sure I understand what is wrong. According to the answers Google never actually indexes the pages after the Javascript has run. I need to create a "shadow site" which google indexes (which google calls HTNL snapshots). If I am right in thinking this then I can pick a winner for the bounty

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• Cursor freezes for 5 secs every now and then

  - by user20560

  I've installed Ubuntu 11.04 (64bit) on my new Thinkpad Edge 11 laptop from Lenovo with the following specs: Processor type AMD Athlon II Neo Processor Speed 1.8 GHz Memory Type DDR3 SDRAM RAM 2048 MB Hard Drive Type HDD Harddisk 250 GB Grafic processor ATI Mobility Radeon HD 6310 Ubuntu has found all my hardware and it works perfectly. I have one irritating problem though: From time to time (sometimes every minute, other times every hour)the cursor freezes for about 5 sec. This happens independently from the number of processes running on the laptop. It's only the cursor that freezes - I can still tab between windows and use the keyboard. I've installed GPointingDeviceSettings, activating the trackpoint, which btw works perfectly. Also I have installed the ATI Catalyst proprietary display driver. Anyone has an idea of whats wrong? Thank you in advance Best regards, Jens

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• Ubuntu install and boot failure 11.10

  - by Robert Moody

  I installed Ubuntu 11.10 on my machine alongside Vista, and upgraded to 12.4. I decided I liked 11.10 better, so I tried to install that again as my only OS, except I increased the size of the swap file partition to 2 gigs. It boots up fine off the CD, but when I install, it gives me a non-specific error, and returns me to the desktop. When attempting to boot off the hard drive, I get a black screen with a blinking underscore that starts in the corner, drops a couple spaces, and stays there. I managed to install 9.04, and am currently using that. The computer is a little outdated, but was fired up for the very first time last week, so the hard drive is in new condition and the CD rom drive is fine too. Running a 3GHzX2 processor. I ran a memory test, which came back fine, and being new to the linux environment, I've been scratching my head for the last couple days. How can I fix this?

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• How do you set up PhysFS for use in a game?

  - by ThePlan

  After my recent question on GD I've been advised to use PhysFS to pack all my game data in 1 file. So I have, and the decission wasn't light, because I've tried out every library in my answers but none contained a single good tutorial whatsoever, in fact PhysFS is the poorest documented library I've ever seen. After attempting to set up PhysFS in my game I realized it's not as simple as adding the headers to the project, it appears something much more complicated, in fact after my first attempt to install PhysFS the compiler ran out of memory to display errors, it reached the critical count of 50 errors. So basically what I'm asking here is: How can I set up PhysFS on my game? I'm using Code::Blocks IDE on Windows XP SP3;

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• Will Tracking Subdomains as Single Entity with Google Analytics Help SEO? [closed]

  - by Sam Gridley

  Possible Duplicate: Does Google Analytics data affect SEO? We have two subdomains, one for our blog and one for our ecommerce store. The blog serves to bring traffic and the store is how we monetize the site. We have them designed to appear as one large site, but I know google sees them as two sites. Here is how the subdomains look: www.example.com (store) blog.example.com (blog) I believe I can configure analytics to use subdomain tracking as explained here: http://support.google.com/googleanalytics/bin/answer.py?hl=en&answer=55524 But my question is whether this will cause google to see our 2 subdomains as one larger domain for SEO purposes. In other words, is there any relationship to how you configure google analytics and how google indexes and ranks your website(s) and pages? Is there anything I need to do in anaytics or webmaster tools to make google aware that these two subdomains work together as one website? Thanks! Sam

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• Why is Ubuntu unmounting my primary hard drive?

  - by Twisol

  I'm running Ubuntu 10.10 on my laptop (an Asus G73j), dual-booting Windows 7 if that matters. After using the computer for couple of hours or so, I get a popup complaining that a file was unmounted, then my GNOME desktop panels disappear. I can't save any unsaved work (the file browser shows "Filesystem" as totally empty), and other programs break in odd ways (like Chrome can't browse to any new pages, but keeps current ones going... at least I still have Pandora to listen to when this happens!). I've tried looking in the system logs to no avail; I'm assuming that it can't write any errors to the logs because, of course, the logs are on the primary hard drives. This started happening maybe a few days ago. Yesterday I upgraded from 10.4, but I believe it was happening before then. Any advice for figuring this out?

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• Unity Player Controls Streaming Music Services From Chrome Toolbar

  - by Jason Fitzpatrick

  Chrome: If you’re a frequent Pandora, Grooveshark, or other popular streaming music station listener, Unity Player puts play control and song info on the Chrome Toolbar. Rather than sending you digging through your tabs to find the window with Pandora–or Google Music, Grooveshark, 8Tracks, Hypemachine, or any of the other dozen supported services–Unity Player pulls up a one-click control panel for easy pause/play, skip, and access to other service features like thumbs up/down flagging. Unity Player is free, works wherever Chrome does. Unity Player [via Addictive Tips] Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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• On-Site Factors that Affect CPC

  - by ashes999

  I have a few websites on various niche topics, all running Adsense. The most promising one currently has a CPC that hovers around $1; the rest have CPCs of $0.25-$0.50. I'm curious to know what on-site factors affect CPC. That is to say, what I can do, legally (in white-hat compliance) to increase my CPC? Some factors that affect CPC but are not within my control (and therefore, beyond the scope of my question -- they're just examples) include: What advertisers are paying for keywords on my site What pages people are landing on etc.

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• Expected time for an CakePHP MVC form/controller and db make up

  - by hephestos

  I would like to know, what is an average time for building a form in MVC pattern with for example CakePHP. I build 8 functions, two of them do custom queries, return json data, split them, expand them in a model in memory and delivers to the view. Those are three queries if you consider and an array to feed view for making some combo box. Why? all these, because I have data from json and I split them in order to make row of data like a table. Like that I changed a bit the edit.ctp but not a lot. And I created a javascript outside, with three functions. One collects data the other upon a change of a combo returnes the selected values, and does also some redirection flow. All this, in average how much time should it take ?

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• Displaying thumbnails in google search results for flash games?

  - by serg

  Some sites are somehow displaying video preview thumbnails for pages that contain flash games in google search results. For example search for: site:www.thorgaming.com game I see this only on small sites which makes me believe google is not very happy about it. How do they do it and is it ok with google? I assume they are submitting thumbnails through video sitemaps, but I can't find any information about using them with flash games. I also run a few such sites through rich snipped testing tool and it didn't detect any microdata tags on a page.

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• Interactive Reporting Translation Workbench utility is available

  - by THE

  As you may have seen in our  Newsletter, Oracle has released the "Oracle Hyperion Interactive Reporting Translation Workbench" for Hyperion Interactive Reporting (IR) customers who are moving to Oracle Business Intelligence Enterprise Edition (OBIEE). A summary for this utility can be found  here. To get the Utility along with documentation and training material we suggest that you visit the Oracle Technology Network ( OTN ) "Oracle Hyperion Interactive Reporting Downloads" page. Friendly enough, instead of hundreds of pages of "getting started Docs", Oracle has packed some training videos into the downloads, so that getting started is made as easy as possible. But of course the documentation comes with it as well.

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• URL Rewrite http to https EXCEPT files in a specific subfolder

  - by BrettRobi

  I am trying to force all traffic on my web site to use HTTPS, using the URL Rewrite 2.0 module added to IIS 7.5. I got that working and now have a need to exclude a couple of pages from using SSL. So I need a rule to rewrite all URL except those referencing this folder to HTTPS. I've been banging my head against the wall on this and am hoping someone can help. I tried creating a rule to match all URL except those in a nossl subfolder as in this example: <rule name="HTTP to HTTPS redirect" enabled="true" stopProcessing="true"> <match url="(/nossl/.*)" negate="true" /> <conditions logicalGrouping="MatchAll" trackAllCaptures="false"> <add input="{HTTPS}" pattern="off" /> </conditions> <action type="Redirect" url="https://{HTTP_HOST}/{R:1}" redirectType="Found" /> </rule> But this doesn't work. Can anyone help?

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• Is it a good idea to appoint one of the scrum team member or scrum master as Product Owner?

  - by Sandy

  Lately we had a project, in which client was busy touring. As usual scrum team was formed, management decided to appoint our analyst as Product owner since Client won’t be able to participate actively. Analyst was the one who worked closely with client for requirement analysis and specification drafting. Client doesn’t have the time to review first two releases. Everything went smoothly until, client saw third release; he wasn’t satisfied with some functionalities, and those was introduced by make shift Product Owner (our analyst). We were told to wait till design team finished mock-up of all pages and client checked each one and approved to continue working. Scrum team is there, but no sprints – we finished work almost like classic waterfall method. Is it a good idea to appoint scrum team member or master as product owner? Do we need to follow scrum in the absence of client/product owner participation?

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