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• Affect on speed of wordpress membership plugins -- currently trying s2member [migrated]

  - by Richard

  I'm taking a look at s2member -- I have it running, and my site is very slow -- it's taking on average about 9 or 10 seconds to load. This is the site: http://richardclunan.net I want to figure out if the s2member plugin is causing it to be slow. And whether there are other faster membership plugins... 3 questions: Are there particular settings or things specific to s2member that I should take care of to ensure s2member doesn't make my site slow? If I deactivate the plugin to test the speed of the site with the plugin deactivated, will that mean I'll have to respecify s2member settings when I reactivate it? After it's reactivated will members' accounts work ok? Anybody have observations on s2member or other wordpress membership site plugins and their affect on site speed?

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• How to document and teach others "optimized beyond recognition" computationally intensive code?

  - by rwong

  Occasionally there is the 1% of code that is computationally intensive enough that needs the heaviest kind of low-level optimization. Examples are video processing, image processing, and all kinds of signal processing, in general. The goals are to document, and to teach the optimization techniques, so that the code does not become unmaintainable and prone to removal by newer developers. (*) (*) Notwithstanding the possibility that the particular optimization is completely useless in some unforeseeable future CPUs, such that the code will be deleted anyway. Considering that software offerings (commercial or open-source) retain their competitive advantage by having the fastest code and making use of the newest CPU architecture, software writers often need to tweak their code to make it run faster while getting the same output for a certain task, whlist tolerating a small amount of rounding errors. Typically, a software writer can keep many versions of a function as a documentation of each optimization / algorithm rewrite that takes place. How does one make these versions available for others to study their optimization techniques?

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• Live Webcast: Private Cloud Database Consolidation with Oracle Exadata

  - by kimberly.billings

  Thursday, January 20th, 2011 at 9:00 am PT In this webcast, you'll learn how Oracle Exadata, Oracle Database 11g, and Oracle Real Application Clusters enable you to consolidate multiple applications on clustered server and storage pools to achieve extreme performance and lower your IT costs. You'll also learn how to maximize the efficiencies of private clouds, including: • Multitenancy • Rapid provisioning • Pay-for-use infrastructure Join us for this live Webcast and discover how Oracle Exadata delivers key cloud capabilities, providing elastic database services that can be quickly provisioned on demand. Register today! To learn more about how customers are consolidating on private clouds with Exadata, watch this video about how Commonwealth Bank of Australia consolidated multiple database services, including OLTP applications such as PeopleSoft Financials, onto an Exadata platform for improved performance and resilience and faster time-to-market.

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• Is IE9 a modern browser?

  - by TATWORTH

  At http://people.mozilla.com/~prouget/ie9/ there is a very provocative article entitled "Is IE9 a modern browser?". There is a rebuttal by Tim Sneath at http://blogs.msdn.com/b/tims/archive/2011/02/15/a-modern-browser.aspx that is well worth a look. Certainly IE9 is already superior to its predecessors. My comment on the matter is that those that consider IE9 to be non-standards compliant, should submit tests to the W3C to demonstrate the non-compliance. Upon acceptance by the W3C, all the competing browsers can then be re-tested. I prefer objective tests to subjective opinion. I have used IE9 and on some sites such as Hotmail, it is noticeably faster. I have so far been unable to apply the promised IE9 lockout of spyware cookies. With Firefox, I just instal NoScript and never enable spyware sites.

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• Google I/O 2012 - Optimizing Your Code Using Features of Google APIs

  Google I/O 2012 - Optimizing Your Code Using Features of Google APIs Sven Mawson Google APIs support a variety of features designed to enable state of the art development. In this session, you will learn how to create applications that use performance enhancing features to make your code run faster and use fewer resources. Some features we'll describe include batching, requests for partial response, and efficient ways to handle media. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 0 0 ratings Time: 44:50 More in Science & Technology

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• Jaroslav Tulach's Report on NetBeans at OSGiCon

  - by Geertjan

  The latest NetBeans Podcast was recorded over the last few weeks and released yesterday. Aside from the NetBeans news items and interviews (interesting stuff about Joel Murach's new Java book using NetBeans, as well as the new developments in the NetBeans Groovy editor), there is, as always an "API Design Tip" of the podcast. That's really worth listening to, always of course, but especially this time because here Jaroslav Tulach talks at some length about his recent trip to OSGiCon, as well as the history and status of OSGi support in NetBeans IDE. Start listening from just before the 30th minute (i.e., the final segment) if you're interested in this particular topic: https://blogs.oracle.com/nbpodcast/entry/netbeans_podcast_60 For example, hear about how JDeveloper got faster by switching from Equinox to Netbinox. And... will Eclipse find itself on the same OSGi container too?

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• Best practices for launching a new software version

  - by steve

  I rebuilt a web app to replace a version that we have been using for the last 3-4 years. We have a few thousand clients and a few hundred active users per day. The functionality is basically the same. The new version is a little bit faster with a few enhancement features and there are a lot of behind the scenes changes that the clients will never see. The UI is quite different but ultimately much easier to use and navigate. How should I go about having our clients stop using the old system and start using the new one? I am currently putting together a video that will play on the web site as well as within the app. The video will go through the pages and focus on some key changes. I was also thinking about an intro page that will display once the user logs in and explains some of the features.

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• What makes an application memory bandwidth bound?

  - by TheLQ

  This has been something that's been bothering me for a while: What makes an application memory bandwidth bound? For example, take this monstrosity of a computer that calculated the 5 trillionth digit of pi (and later 10 trillionth digit). I was surprised that they choose the lower but faster 98 GB RAM at 1066 MHz instead of the larger but slower 144 GB at 800 MHz. This is especially surprising considering they are using 22 TB HD array to store the results from computation; more RAM means less need for hard drives. Maybe its because I don't write applications for HPC servers, but how would RAM be the bottleneck? Are there any other non-HPC applications that usually run into this problem?

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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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• Building a Map based WebApp fast?

  - by NLemay

  I want to build a WebApp which is basically a map with points of interest, filters, and a list of those points. Something really similar to AirBnB, or any other map based app. Of course, I could just take Google Maps API and build what's around. But I guess a lot of people already did that, and may be I could use their work to make mine faster. Here's what I need : Adding multiples POI A list of POI that are showed on the map A way to filter POI Most have a behavior to handle a lot of POI Can works on mobile and tablet I already know one template that can do nearly all of this, it is call Bootleaf. But I would like to know if you know others that might work better.

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• At what point is asynchronous reading of disk I/O more efficient than synchronous?

  - by blesh

  Assuming there is some bit of code that reads files for multiple consumers, and the files are of any arbitrary size: At what size does it become more efficient to read the file asynchronously? Or to put it another way, how small must a file be for it to be faster just to read it synchronously? I've noticed (and perhaps I'm incorrect) that when reading very small files, it takes longer to read them asynchronously than synchronously (in particular with .NET). I'm assuming this has to do with set up time for things like I/O Completion Ports, threads, etc. Is there any rule of thumb to help out here? Or is it dependent on the system and the environment?

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• How to implement the light trails for a tron game?

  - by Link

  Well I was creating a TRON style game, but had an issue with creating the actual light trails for the game. What I'm doing currently is I have an array the same size as my window in pixel size, implemented like this: int* collision[800][600]; Then when the bike goes on a certain pixel, it is marked with a 1 for traveled on. However what is the most efficient way to create a working light trail display? I tried to do something like this: int i, j; for(i=0; i<800; i++) for(j=0; j<600; j++) if(*collision[i][j] == 1) Image::applySurface(i, j, trailSurface, gameScreen); But it isn't working properly? It just fills the whole screen with a sprite instead. Whats a better/faster/working way to do this?

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• How To Create Custom Keyboard Shortcuts For Browser Actions and Extensions in Google Chrome

  - by Chris Hoffman

  Geeks love keyboard shortcuts – they can make you faster and more productive than clicking everything with your mouse. We’ve previously covered keyboard shortcuts for Chrome and other browsers, but you can assign your own custom keyboard shortcuts, too. Google Chrome includes a built-in way to assign custom keyboard shortcuts to your browser extensions. You can also use an extension created by a Google employee to create custom keyboard shortcuts for common browser actions – and less common ones. Image Credit: mikeropology on Flickr (modified) Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer Why Enabling “Do Not Track” Doesn’t Stop You From Being Tracked

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• Rules of Holes #3 -A Better Shovel is NOT the Answer!

  - by ArnieRowland

  You stopped digging. You looked around and saw that you were still in the Hole. You needed to get out. AHA! Problem solved, you thought. You'll just get a better and more efficient shovel! Sorry, I have to tell you that switching to a more efficient shovel is unlikely to help you get out of the Hole. Yes, your resumed digging may be faster, more directed, and even well planned and articulated. But you will still be in the Hole, and digging. And that's just not the solution. A new process (scrum,...(read more)

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• Learning low latency C++ and Java?

  - by user997112

  I'm currently in a role where I dont get to write any C++ or Java. However, the role is good because provides me with exposure to the business side (i'm interested in finance). Eventually I would like to get into high frequency trading infrastructure. Therefore, outside of work hours i'd like to maximise the knowledge I can gain about high performance Java and C++. I already have the Java Performance Tuning book, which is ok but not impressive. Can people recommend anymore latency blogs/books/websites for learning about making C++/C/Java or even Unix very fast? Or perhaps making the network parts of the OS (if re-writing Unix components) faster? EDIT: Or perhaps we could make this THE thread for advice on writing fast code

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• Slow wireless about 1/3 bandwidth of wired from cable modem

  - by Rhino

  HP DV6000 Wireless G Broadcom Netgear WNDR3400 router properly configured. Windows laptops using wireless G and N are considerably faster than mine. 12.04 LTS, all restricted drivers and all up to date. 50Mbps wired and 9-21 Mbps wireless on Ubuntu. 00:14.0 Bridge [0680]: NVIDIA Corporation MCP51 Ethernet Controller [10de:0269] (rev a3) Subsystem: Hewlett-Packard Company Presario V6133CL [103c:30b7] Kernel driver in use: forcedeth 03:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11a/b/g [14e4:4312] (rev 02) Subsystem: Hewlett-Packard Company Broadcom 802.11a/b/g WLAN [103c:1370] Kernel driver in use: wl

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• Designing call center applications, what to consider.

  - by Espen Schulstad

  We have customers calling in to place orders. What sort of considerations should I make when building a call center application. Speed is a factor here. We had a powerbuilder application that was extremly fast for a trained user. We want to have the same sort of speed in our new production system. So some thoughts I've made are: Hotkeys are important. Is it faster to use a "wizard", step by step, or should I try to place everything important about the order logically on one sceen and have another screen where you do all searches, pertinent for that order?

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• Is there a purpose for using pull requests on my own repo if I am the only developper?

  - by marco-fiset

  So I got started with a real project of mine on GitHub and things are going pretty well and ideas are flowing a lot faster than I initially thought. In order to keep things organized, I setup some branches so I can develop different features separatly. Now when I push my branch to GitHub, I have that section where I have two buttons : Pull Request and Compare with the name of the branch I recently pushed to. I understand the purpose of the Compare button but I don't get why I would want to create a pull request on my own repo. Can someone explain me why I would do that? Is it useful to make pull request on my own repo if I am the only developper?

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• Slow transfer to external USB3 hard drive

  - by JMP

  Trying to backup data from hard drive before reloading windows following some issue with its load. Having trouble with the file transfer to a USB3/2 external hard drive NTFS. Getting transfer speed of about 116.7kB/sec. In other words its taking about 5 hours to transfer 1.4GB. I've got about 80GB to go. So the transfer is going to take 11days. Seems a little on the slow side. Am I missing something? Is there a way to make this faster. No issue with the external drive transferring this amount in windows. But don't have that option at the moment.

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• International multi-OS keyboard layout for both coding and surfing?

  - by Nikolai Prokoschenko

  So yes, the problem has been raised in parts multiple times already. Still I'm looking for a keyboard layout that has the following features: Easy on fingers (Dvorak-like layouts welcome) Easy for coding Includes German characters (typing ä with AltGr-p is not ok). Works well with web-browsing (Ctrl-t and Ctrl-w on one hand, left one very much preferred, since that's where my ex-CapsLock, now Ctrl lies) Works well with default Emacs bindings Works on both Windows and Linux (at least easily installable) I've looked at Dvorak and Neo, they both have a "shortcut problem", i.e. web-browsing and most frequent Emacs combinations use both parts of the keyboard. Using right Ctrl is usually not an option, since it'll give me RSI much faster than keeping QWERTY/Z. Funnily enough, mirroring the default Neo layout would probably be enough for me. So, any ideas?

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• For business information and web traffic T4 and Solaris 11 stand head and shoulders above the crowd

  - by rituchhibber

  Everyone is talking about encryption of business information and web traffic. T4 and Solaris 11 stand head and shoulders above the crowd. Each T4 chip has 8 crypto accelerators inside the chip - that means there are 32 in a T4-4.  These are faster and offer more algorithms than almost all standalone devices and it is all free with T4!  What are you waiting for?Please contact Lucy Hillman or Graham Scattergood for more details.Your weekly tea time soundbite of the latest UK news, updates and initiatives on the SPARC T Series servers. T4 good news, best practice and feedback is always welcome.

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• How do I optimize searching for the nearest point?

  - by Rootosaurus

  For a little project of mine I'm trying to implement a space colonization algorithm in order to grow trees. The current implementation of this algorithm works fine. But I have to optimize the whole thing in order to make it generate faster. I work with 1 to 300K of random attraction points to generate one tree, and it takes a lot of time to compute and compare distances between attraction points and tree node in order to keep only the closest treenode for an attraction point. So I was wondering if some solutions exist (I know they must exist) in order to avoid the time loss looping on each tree node for each attraction point to find the closest... and so on until the tree is finished.

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• Using High Level Abstractions

  - by Jonn

  I'm not sure if I'm using the correct term, but would you program using High-level abstractions like Powerbuilder, or some CMS like MODx or DotNetNuke? I haven't dabbled in any of these yet. The reason I'm asking is that I kind of feel intimidated by the whole notion of using any abstraction over the languages I'm using. I'm thinking that my job might be over-simplified. While it may provide business solutions faster, I'd rather be coding straight from, in my case, .NET. Do/Would you use abstractions like these or prefer them over programming in lower level languages?

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• What are the system requirements for each flavor of Ubuntu Desktop?

  - by Braiam

  I'm thinking about installing Ubuntu Desktop, but I don't know what flavor is the better for my system. What are the minimum and recommended hardware requirements? What kind of CPU? How much memory? Should I have Hardware Acceleration? What flavor should I use? This is an attempt of a canonical answer. My answers have the "official minimal requirements", the recommended are a mix of official sources and opinion based (along with the answer it's told the source). You can comment or edit if you feel that the information is obsolete or incomplete. Is a good rule of thumb that any system capable to run Windows Vista, 7, 8 x86 OS X will almost always be a lot faster with any Ubuntu flavor even if they are lower-spec than described below.

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• Is there such a thing as having too many private functions/methods?

  - by shovonr

  I understand the importance of well documented code. But I also understand the importance of self-documenting code. The easier it is to visually read a particular function, the faster we can move on during software maintenance. With that said, I like to separate big functions into other smaller ones. But I do so to a point where a class can have upwards of five of them just to serve one public method. Now multiply five private methods by five public ones, and you get around twenty-five hidden methods that are probably going to be called only once by those public ones. Sure, it's now easier to read those public methods, but I can't help but think that having too many functions is bad practice.

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