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• Windows 7 - traceroute hop with high latency! [closed]

  - by Mac

  I've been experiencing this problem for quite a while, and it's quite frustrating. I'll do a traceroute, to www.l.google.com, for example. This is the result (please note: I will replace some parts of personal information with text - i.e. ISP.IP is in reality an actual IP address, and ISPNAME replaces the actual ISP name): Tracing route to www.l.google.com [173.194.34.212] over a maximum of 30 hops: 1 1 ms 1 ms <1 ms 192.168.1.1 2 9 ms 8 ms 10 ms ISP.EXCHANGE.NAME [ISP.IP.172.205] 3 161 ms 171 ms 177 ms host-ISP.IP.215.246.ISPNAME.net [ISP.IP.215.246] 4 12 ms 9 ms 10 ms host-ISP.IP.215.246.ISPNAME.net [ISP.IP.215.246] 5 10 ms 9 ms 17 ms host-ISP.IP.224.165.ISPNAME.net [ISP.IP.224.165] 6 10 ms 9 ms 10 ms 10.42.0.3 7 9 ms 9 ms 10 ms host-ISP.IP.202.129.ISPNAME.net [ISP.IP.202.129] 8 10 ms 9 ms 9 ms host-ISP.IP.209.33.ISPNAME.net [ISP.IP.209.33] 9 77 ms 129 ms 164 ms host-ISP.IP.198.162.ISPNAME.net [ISP.IP.198.162] 10 43 ms 42 ms 43 ms 72.14.212.13 11 42 ms 42 ms 42 ms 209.85.252.36 12 59 ms 59 ms 59 ms 209.85.241.210 13 60 ms 76 ms 68 ms 72.14.237.124 14 59 ms 59 ms 58 ms mad01s08-in-f20.1e100.net [173.194.34.212] Trace complete. Notice that there is a spike on the 3rd hop, but also notice that the 3rd and 4th hop are to the exact same destination. Furthermore, when I ping the offended hop separately, I get the low latency I would expect to that server: Pinging ISP.IP.215.246 with 32 bytes of data: Reply from ISP.IP.215.246: bytes=32 time=10ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=9ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=12ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=9ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=10ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=9ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=10ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=9ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=10ms TTL=253 Reply from ISP.IP.215.246: bytes=32 time=10ms TTL=253 Ping statistics for ISP.IP.215.246: Packets: Sent = 10, Received = 10, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 9ms, Maximum = 12ms, Average = 9ms I'm baffled as to why or how this is happening, and it seems to "fix itself" at random times. Here is an example of where it was working as expected: http://i.imgur.com/bysno.png Notice how many fewer hops were taken. Please note that all the posted results occurred within 10 minutes of testing. I've tried contacting my ISP, and they seem clueless; in their eyes, as long as "the download speed is not slow", then they're doing everything right. Any insight would be very much appreciated, and thanks in advanced!

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• ArchBeat Link-o-Rama for December 6, 2012

  - by Bob Rhubart

  Above and Beyond with the A-Team Maybe it's the coffee… If you follow this blog you've probably noticed that I regularly feature posts from members of the Oracle Fusion Middleware Architecture team, otherwise known as the A-Team. One of those bloggers, someone identified only as "fip" who writes on the A-Team SOA blog, went above and beyond on Dec 4, publishing a total of four substantial technical posts in a single day, each one worth a look: Retrieve Performance Data from SOA Infrastructure Database Configure Oracle SOA JMSAdatper to Work with WLS JMS Topics How to Achieve OC4J RMI Load Balancing Using BPEL Performance Statistics to Diagnose Performance Bottlenecks Web Service Example - Part 3: Asynchronous | The Oracle ADF Mobile Blog Part 3 in this series from the Oracle ADF Mobile blog looks at "firing the web service asynchronously and then filling in the UI when it completes." Denis says, "This can be useful when you have data on the device in a local store and want to show that to the user while the application uses lazy loading from a web service to load more data." ADF Mobile - Implementing Reusable Mobile Architecture | Andrejus Baranovskis "Reusability was always a strong part of ADF," says Oracle ACE Director Andrejus Baranovskis. "The same high reusability level is supported now in ADF Mobile." The objective of this post is "to prove technically that [the] reusable architecture concept works for ADF Mobile." Basic is Best | Eric Stephens "The world we live in and enterprises we strive to transform with enterprise architecture are complicated organisms, much like the human body," says Oracle Enterprise Architect Eric Stephens. "But sometimes a simple solution is the best approach...Whatever level of abstraction you are working at, less is more." Selling Federal Enterprise Architecture | Ted McLaughlan "EA must be 'sold' directly to the communities that matter from a coordinated, proactive messaging perspective that takes BOTH the Program-level value drivers AND the broader Agency mission and IT maturity context into consideration, " explains Ted McLaughlan. And that's true for any organization. Avoiding the "I'm Spartacus" Scenario in SOA | Ben Wilcock "This ‘SOA Spartacus’ scenario usually occurs quite soon after SOA is articulated as the primary strategic direction of the programme," says Ben Wilcock, "but before the organisation’s SOA capability is mature enough to understand what is meant by SOA, and how it should be designed and delivered." In such cases, perhaps the "A" in SOA is missing, no? Thought for the Day "It makes me feel guilty that anybody should have such a good time doing what they are supposed to do." — Charles Eames (1907–1978) Source: SoftwareQuotes.com

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• Leveraging Social Networks for Retail

  - by David Dorf

  For retailers, social media is all about B2C2C. That is, Business to Consumer to Consumer, or more specifically, retailer to influencer to consumer. Traditional marketing targeted mass media, trying to expose the message to as many people as possible. While effective, this approach has never been very efficient, with high costs for relatively low penetration. Then it was thought that marketers should focus their efforts on a relative few super-influencers that would then sway the masses. History shows a few successes with this approach but lacked any consistency or predictability. After all, if super-influencers were easy to find, most campaigns would easily go viral. Alas, research shows that most wide-spread trends were the result of several fortunate events, including some luck. So do people exert influence over each other when it comes to purchase decisions? Of course they do, all the time. But that influence is usually limited to a small set of friends and specific specialization. For instance, although I have 165 friends on Facebook, I am only able to influence my close friends and family on PC purchases, and I have no sway at all for fashion purchases. People trust my knowledge on technology, but nobody asks my advice on shoes. How then should retailers leverage social networks in order to reinforce brand image and push promotions? Two obvious ways are Like and Share. Online advertisements or wall-postings receive more clicks when the viewer sees that friends have "liked" the posting. That's our modern-day version of word-of-mouth advertising. Statistics show that endorsements from friends make it more likely a person will engage. If my friends and I liked it, then I might also "share" (or "retweet" in the case of Twitter) it with other friends. In that case the retailer has paid for X showings of the advertisement, but sharing has pushed it to an additional Y people at no cost. And further, the implicit endorsement by the sharer makes it more likely the recipient will engage. So a good first step is to find people active in social networks that will Like and Share in order to exert influence. Its still tough to go viral, but doubling engagement is still a big step in the right direction. More complex social graph analysis would be a second step, but I'll leave that topic for another day. If you're interested in the academic side of social dynamics, I suggest reading Duncan Watts' work.

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• Understanding Data Science: Recent Studies

  - by Joe Lamantia

  If you need such a deeper understanding of data science than Drew Conway's popular venn diagram model, or Josh Wills' tongue in cheek characterization, "Data Scientist (n.): Person who is better at statistics than any software engineer and better at software engineering than any statistician." two relatively recent studies are worth reading.   'Analyzing the Analyzers,' an O'Reilly e-book by Harlan Harris, Sean Patrick Murphy, and Marck Vaisman, suggests four distinct types of data scientists -- effectively personas, in a design sense -- based on analysis of self-identified skills among practitioners.  The scenario format dramatizes the different personas, making what could be a dry statistical readout of survey data more engaging.  The survey-only nature of the data,  the restriction of scope to just skills, and the suggested models of skill-profiles makes this feel like the sort of exercise that data scientists undertake as an every day task; collecting data, analyzing it using a mix of statistical techniques, and sharing the model that emerges from the data mining exercise.  That's not an indictment, simply an observation about the consistent feel of the effort as a product of data scientists, about data science.  And the paper 'Enterprise Data Analysis and Visualization: An Interview Study' by researchers Sean Kandel, Andreas Paepcke, Joseph Hellerstein, and Jeffery Heer considers data science within the larger context of industrial data analysis, examining analytical workflows, skills, and the challenges common to enterprise analysis efforts, and identifying three archetypes of data scientist.  As an interview-based study, the data the researchers collected is richer, and there's correspondingly greater depth in the synthesis.  The scope of the study included a broader set of roles than data scientist (enterprise analysts) and involved questions of workflow and organizational context for analytical efforts in general.  I'd suggest this is useful as a primer on analytical work and workers in enterprise settings for those who need a baseline understanding; it also offers some genuinely interesting nuggets for those already familiar with discovery work. We've undertaken a considerable amount of research into discovery, analytical work/ers, and data science over the past three years -- part of our programmatic approach to laying a foundation for product strategy and highlighting innovation opportunities -- and both studies complement and confirm much of the direct research into data science that we conducted. There were a few important differences in our findings, which I'll share and discuss in upcoming posts.

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• Version control and data provenance in charts, slides, and marketing materials that derive from code ouput

  - by EMS

  I develop as part of a small team that mostly does research and statistics stuff. But from the output of our code, other teams often create promotional materials, slides, presentations, etc. We run into a big problem because the marketing team (non-programmers) tend to use Excel, Adobe products, or other tools to carry out their work, and just want easy-to-use data formats from us. This leads to data provenance problems. We see email chains with attachments from 6 months ago and someone is saying "Hey, who generated this data. Can you generate more of it with the recent 6 months of results added in?" I want to help the other teams effectively use version control (my team uses it reasonably well for the code, but every other team classically comes up with many excuses to avoid it). For version controlling a software project where the participants are coders, I have some reasonable understanding of best practices and what to do. But for getting a team of marketing professionals to version control marketing materials and associate metadata about the software used to generate the data for the charts, I'm a bit at a loss. Some of the goals I'd like to achieve: Data that supported a material should never be associated with a person. As in, it should never be the case that someone says "Hey Person XYZ, I see you sent me this data as an attachment 6 months ago, can you update it for me?" Rather, data should be associated with the code and code-version of any code that was used to get it, and perhaps a team of many people who may maintain that code. Then references for data updates are about executing a specific piece of code, with a known version number. I'd like this to be a process that works easily with the tech that the marketing team already uses (e.g. Excel files, Adobe file, whatever). I don't want to burden them with needing to learn a bunch of new stuff just to use version control. They are capable folks, so learning something is fine. Ideally they could use our existing version control framework, but there are some issues around that. I think knowing some general best practices will be enough though, and I can handle patching that into the way our stuff works now. Are there any goals I am failing to think about? What are the time-tested ways to do something like this?

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• links for 2011-01-04

  - by Bob Rhubart

  Webcasts (tags: ping.fm) Five Key Trends in Enterprise 2.0 for 2011 (Oracle Enterprise 2.0 Blog) Kellsey Ruppel shares insight from Oracle's Andy MacMillan. (tags: oracle otn enterprise2.0) Victor Bax: Lost in Service Oriented Architecture? "SOA is a concept, no more, no less. SOA is not a technology, or a piece of software. It is an architecture, a model." - Victor Bax (tags: oracle soa) Jan-Leendert: Oracle 11g SOA Suite read multi record data from csv file with the file adapter (master-detail) "The file adapter is a very powerlful tool to read files with structured data. Most of the time you will read simple csv files with one record per row. But what if your csv file contains multiple records with different types?" - Jan-Leendert (tags: oracle soa soasuite) @myfear: Five ways to know how your data looked in the past. Entity Auditing. "Whatever requirements you have. I can promise you, that it will never be a simple solution. In general it's best to evaluate your purpose for auditing in detail." - Oracle ACE Director Markus Eisele (tags: oracle otn oracleace java) @fteter: Buffing Up The Crystal Ball "While I'm already tired of seeing these types of posts (I'm writing on New Year's Day), I'm also feeling guilty about not making my own set of predictions." - Oracle ACE Director Floyd Teter (tags: oracle otn oracleace ec2 cloud fusionmiddleware) @bex: ECM New Year's Resolutions "Happy new year! Most people use the first post of the year to go over their own blog statistics of popular posts... but since my blog's fiscal year ends in April, I decided to do new years resolutions instead." - Oracle ACE Director Bex Huff (tags: oracle otn oracleace ecm enterprise2.0) Izaak de Hullu: Embedded Java in a 11g BPEL process "In an earlier blog my colleague Peter Ebell explained how you can create an extension of com.collaxa.cube.engine.ext.BPELXExecLet to do your coding in a regular Java environment so you have code completion and validation..." - Izaak de Hullu (tags: oracle otn bpel java soa) @gschmutz: Cannot access EM console after installing SOA Suite 11g PS2 Oracle ACE Director Guido Schmutz encounters a problem and shares the solution. (tags: oracle otn oracleace soa soasuite)

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• SQL SERVER – Template Browser – A Very Important and Useful Feature of SSMS

  - by pinaldave

  Let me start today’s blog post with a direction question. How many of you have ever used Template Browser? Template Browser is a very important and useful feature of SQL Server Management Studio (SSMS). Every time when I am talking about SQL Server there is always someone comes up with the question, why there is no step by step procedure included in SSMS for features. Honestly every time I get this question, the question I ask back is How many of you have ever used Template Browser? I think the answer to this question is most of the time either no or we have not heard of the feature. One of the people asked me back – have you ever written about it on your blog? I have not yet written about it. Basically there is nothing much to write about it. It is pretty straight forward feature, like any other feature and it is indeed difficult to elaborate. However, I will try to give a quick introduction to this feature. Templates are like a quick cheat sheet or quick reference. Templates are available to create objects like databases, tables, views, indexes, stored procedures, triggers, statistics, and functions. Templates are also available for Analysis Services as well. The template scripts contain parameters to help you customize the code. You can Replace Template Parameters dialog box to insert values into the script. Additionally users can create new custom templates as well with folder structure. To open a template from Template Explorer Go to View menu >> Template Explorer or type CTRL+ALT+L. You will find a list of categories click on any category and expand the folder structure. For our sample example let us expand Index Folder. In this folder you will notice the various T-SQL Scripts. These scripts can be opened by double click or can be dragged to editor area and modified as needed. Sample template is now available in the query editor area with all the necessary parameter place folder. You can replace the same parameter by typing either CTRL+SHIFT+M or by going to Query Menu >> Specify Values for Template Parameters. In this screen it will show  Specify Values for Template Parameters dialog box, accept the value or replace it with a new value. This will now get your script ready to go. Check it one more time and change the script to fit your requirement. I personally use template explorer for two things. First one is obviously for templates but the hidden one and an important one is for learning new features and T-SQL commands. There is so much to learn and so little time. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Server Management Studio, SQL Tips and Tricks, T SQL, Technology

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• What can I do to make sure my code gets maintained in a developer light environment?

  - by asjohnson

  I am a contract data analyst, so I bounce between jobs every 3-6 months, which I find to be a good fit for me, but it leads to some problems when it comes to coding. I mostly do statistics (I've asked a similar question on cross validated, but the answers there are not relevant here), but I have also found out that the business world loves excel and loves copying and pasting the same thing over and over again even more. This led me to learn how to write VBA scripts and then VB.NET programs to automate as many of these reports as I can. I am certain my programs are not the most elegant, but I put a good bit of effort into making sure they work under as many cases as I can test, I add in exceptions and try to code so the program can handle changes in the files that it processes, but there is a limit, if you remove a huge portion of the data, there is a good chance my program is going to trip up, which I accept will inevitably happen. Usually a pretty minor change in the code fixes the problem and I do try and comment my code and make it readable under the assumption that some other person will have to read it some day. My problem is that I generally get put on teams of folks with essentially no experience with programming (like VBA would be a huge stretch for anyone I work directly with). I am wondering what I should be doing as the person that wrote the code to do my best to keep it maintained. I have two approaches in mind (outlined next), but would be very happy to get any advice. Solution 1: Find the more tech savvy coworkers and run them through the programs and what basic changes can be made. Honestly automating excel is about as easy as it can get when it comes to programming, so I feel like I could teach someone the basics of maintaining it pretty quick. Solution 2: Get in touch with the IT department and show them what is going on and maybe they will be able to help. The problem here is that the IT department is constantly swamped (as I'm sure many of you know) and I feel like kind of a jerk for dumping more things on them. I do leave my personal email address with places and am willing to answer quick questions via email, but I view the need for more exhaustive maintenance as something of an inevitability and would like to make sure I do my due diligence to make sure it gets done. I imagine some combination of the two approaches outlined there, but is there any kind of heads up I should give IT? I feel like I would be annoyed if I started getting requests to fix a program that I had never seen from some random guy that is no longer there.

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• ANTS Memory Profiler 7.0

  - by Sam Abraham

  In the next few lines, I would like to briefly review ANTS Memory Profiler 7.0.  I was honored to be extended the opportunity to review this valuable tool as part of the GeeksWithBlogs influencers Program, a quarterly award providing its recipients access to valuable tools and enabling them with an opportunity to provide a brief write-up reviewing the complimentary tools they receive.   Typical Usage   ANTS Memory Profiler 7.0 is very intuitive and easy to use for any user be it novice or expert. A simple yet comprehensive menu screen enables the selection of the appropriate program type to profile as well as the executable or site for this program.   A typical use case starts with establishing a baseline memory snapshot, which tells us the initial memory cost used by the program under normal or low activity conditions. We would then take a second snapshot after the program has performed an activity which we want to investigate for memory leaks. We can then compare the initial baseline snapshot against the snapshot when the program has completed processing the activity in question to study anomalies in memory that did not get freed-up after the program has completed its performed function. The following are some screenshots outlining the selection of the program to profile (an executable for this demonstration’s purposes).   Figure 1 - Getting Started   Figure 2 - Selecting an Application to Profile     Features and Options   Right after the second snapshot is generated, Memory Profiler gives us immediate access to information on memory fragmentation, size differences between snapshots, unmanaged memory allocation and statistics on the largest classes taking up un-freed memory space.   We would also have the option to itemize objects held in memory grouped by object types within which we can study the instances allocated of each type. Filtering options enable us to quickly narrow object instances we are interested in.   Figure 3 - Easily accessible Execution Memory Information   Figure 4 - Class List   Figure 5 - Instance List   Figure 6-  Retention Graph for a Particular Instance   Conclusion I greatly enjoyed the opportunity to evaluate ANTS Memory Profiler 7.0. The tool's intuitive User Interface design and easily accessible menu options enabled me to quickly identify problem areas where memory was left unfreed in my code.     Tutorials and References  FInd out more About ANTS Memory Profiler 7.0 http://www.red-gate.com/supportcenter/Product?p=ANTS Memory Profiler   Checkout what other reviewers of this valuable tool have already shared: http://geekswithblogs.net/BlackRabbitCoder/archive/2011/03/10/ants-memory-profiler-7.0.aspx http://geekswithblogs.net/mikebmcl/archive/2011/02/28/ants-memory-profiler-7.0-review.aspx

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• Why is my laptop so sluggish? Or Damn You Facebook and Twitter! Or All Hail Chrome!

  - by John Conwell

  In the past three weeks, I've noticed that my laptop (dual core 2.1GHz, 2Gb RAM) has become amazingly sluggish.  I only uses for communications and data lookup workflows, so the slowness was tolerable.  But today I finally got fed up with the suckyness and decided to get to the root of the problem (I do have strong performance roots after all). It actually didn't take all that long to figure it out.  About a year ago I converted to Google Chrome (away from FireFox).  One of the great tools Chrome has is a "Task Manager" tool, that gives you Windows Task Manager like details for all the tabs open in the browser (Shift + Esc).  Since every tab runs in its own process, its easy from Task Manager (both Windows or Chrome) to identify and kill a single performance offending tab.  This is unlike IE, where you only get aggregate data about all tabs open.  Anyway, I digress.  Today my laptop sucked.  Windows Task Manager told me that I had two memory hogging Chrome tabs, but couldn't tell me which web page those tabs are showing.  Enter Chrome Task Manager which tells you the page title, along with CPU, memory and network utilization of each tab.  Enter my amazement.  Turns out Facebook was using just shy of half a Gb of RAM.  Half a Gigabyte!  That's 512 Megabytes!524,288 Kilobytes! 536,870,912 Bytes!  Or 4,294,967,296 Bits!  In other words, that's a frackin boat load of memory.  Now consider that Facebook is running on pretty much 96.3% (statistics based on absolutely nothing) of every house hold desktop, laptop, netbook, and mobile device in America, that is pretty horrific! And I wasn't playing any Facebook games like FarmWars or MafiaVille.  I just had my normal, default home page up showing me who just had breakfast, or just got finished with their morning run. I'm sorry...let me say that again...HALF A GIG OF RAM!  That is just unforgivable. I can just see my mom calling me up:  Mom: "John...I think I need a new computer.  Mine is really slow these days" John: "What do you have running?" Mom: "Oh, just Facebook" John: "Ok, close Facebook and tell me how fast your computer feels" Mom: "Well...I don't know how fast it is.  All I do is use Facebook" John: "Ok Mom, I'll send you a new computer by Tuesday" Oh yea...and the other offending web page?  It was Twitter, using a quarter of a Gigabyte. God I love social networks!

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• What are the drawbacks of sending XML to browsers and let them apply XSLT?

  - by MainMa

  Context Working as a freelance developer, I often made websites completely based on XSLT. In other words, on every request, an XML file is generated, containing everything we need to know about the page content: the name of the user currently logged in, the top menu entries, if this menu is dynamic/configurable, the text to display in a specific area of the page, etc. Then XSL process (caches, etc.) it to HTML/XHTML page to send to the browser. It has a good point to make it easier to create small-scale websites, especially with PHP. It is a sort of template engine, but which I prefer to other template engines because it's much more powerful than most of template engines, and because I know it better and like it. It is also possible, when need, to give an access to raw XML data on demand for an automated access, without the need to create separate APIs. Of course, it will fail completely on any medium-scale or large-scale website, since, even with good caching techniques, XSL still degrades overall website performance and requires more CPU serverside. Question Modern browsers have the ability to take an XML file and to transform it with an associated XSL file declared in XML like <?xml-stylesheet href="demo.xslt" type="text/xsl"?>. Firefox 3 can do it. Internet Explorer 8 can do it too. It means that it is possible to migrate XSL processing from the server to the client side for 50% of users (according on browser statistics on several websites where I may want to implement this). It means that those 50% of users will receive only the XML file at each request, thus reducing their and server's bandwidth (XML file being much shorter than its processed HTML analog), and reducing server's CPU usage. What are the drawbacks of this technique? I thought about several ones, but it doesn't apply in this situation: Difficult implementation and the need to choose, based on the browser request, when to send raw XML and when to transform it to HTML instead. Obviously, the system will not be much more difficult then the actual one. The only change to make is to add XSL file link to every XML, and to add a browser check. More IO and bandwidth usage, since the XSLT file will be downloaded by the browsers, instead of being cached by the server. I don't think it will be a problem, since XSLT file will be cached by the browsers (like images, or CSS, or JavaScript files are cached actually). Possibly some problems on client side, like maybe problems when saving a page in some browsers. Difficulty to debug code: it is impossible to obtain an HTML source the browser is actually using, since the only displayed source is the downloaded XML. On the other hand, I rarely go look at HTML code on client side, and in most cases, it is unusable directly (whitespace being removed).

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• MS in Computer Science after BE in electronics

  - by Abhinav

  I am doing my 3rd year Bachelors in Electronics and Electrical Communication but from the first year I have been interested in Computer Science. But at that time it was just my hobby. But in second year when I joined robotics my love for computer science rose. I with my team came in top three in 2 National Competition (Technical fests of different IITs) where we used Image Processing, Hardware interfacing etc. But then I realised that Computer Science is not just about coding. I took many lectures from online free schools like Udacity, Coursera in subjects related to Artificial Intelligence, Building a Search Engine, Design and Analysis of Algorithm, Programming a Robotic Car, Programming Languages, Machine Learning, Software Engineering as a Service, WebApps Engineering, Compilers, Applied Crypotography etc. I also did some courses in Core and Advanced Java in my second year from training institute. I will also be taking course in Statistics, Databases, Discrete Mathematics from 25th June. Now I realized how vast is the field of Computer Science and how efficient you become on deciding algorithms and classifying problems into different subfields which have been thoroughly researched so you don't always do brute force thing or naive programming. Now this field has become kind of passion for me. Adding to the fact I am also doing my 6 months internship in software field in Texas Instruments where I am working on Automation and Algorithms. I also have some 5-6 good college level projects in Softwares and Robotics. I also like Electronics but only some fields like Operating System(this subject was there in Electronics also), Micro Processor, Digital, Computer Architecture, DSPs etc. I really want to pursue MS in some field of Computer Science. I am giving GRE in October/November. Till now I have good CG of around 9.4/10 and my 1 year in college is still left. Do I have any chance that some good University in US will consider me for MS in field related to computer science or Robotics. Also Can you suggest somethings that I can do during this 1 year to increase my chances for MS or should I apply for EECS(Electrical Engineering and Computer Science) and then I can shift more towards Computer Science as my major option. My main aim is to do Phd after Ms in CS if I am able to do that somehow. I know that I have to put much extra effort to understand things in MS than CS undergraduates but I will do that with my full dedication, also when I communicate with my college CS students or during my internship period I didn't feel that I am missing very much stuff that they know and was very comfortable during my internship with software employees.

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• The State of the Internet -- Retail Edition

  - by David Dorf

  Over at Business Insider, there's a great presentation on the State of the Internet done in the Mary Meeker style.  Its 138 slides so I took the liberty of condensing it down to the 15 slides that directly apply to the retail industry.  However, I strongly recommend looking at the entire deck when you have time.  And while you're at it, Business Insider just launched a retail portal that's dedicated to retail industry content.  Please check it out as well.  My take-aways are below after the slide show. &amp;amp;amp;amp;lt;span id=&amp;amp;amp;amp;quot;XinhaEditingPostion&amp;amp;amp;amp;quot;&amp;amp;amp;amp;gt;&amp;amp;amp;amp;lt;/span&amp;amp;amp;amp;gt; [Source: Business Insider] Here are a few things I took away from the statistics: Facebook and Twitter are in their infancy.  While all retailers should have social programs, search is still the driver and therefore should receive the lions share of investment.  Facebook referrals are up 92% year-over-year, but Google still does 80% of the referrals. E-commerce continues to grow at breakneck speed, but in-store commerce is still king. Stores are not showrooms yet.  And social commerce pure-plays like Gilt and Groupon are tiny but worthy of some attention. There are more smartphones than PCs on the internet, and the disparity will continue to grow. PC growth will be flat and Tablet use will continue to grow. Mobile accounts for 12% of all internet traffic. A quarter of smartphone sales come from China, so anyone with a presence there better have a strong mobile strategy. 38% of people have used their smartphone to make a purchase, and many use their smartphones inside stores.  Smartphones are a critical consumer tool for shopping. Mobile is starting to drive significant traffic to e-commerce sites, especially tablets.  Tablet strategies are crucial for retailers. Mobile payments from the likes of Paypal and Square are growing quickly.  It will be interesting to see how NFC plays in this area. Mobile operating systems are losing market share to iOS and Android.  I wonder in Microsoft can finally make a dent? The internet is being dominated by mobile devices, and retailers had better have a strong mobile strategy to meet consumer demand.

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• Enterprise Manager 12c: New DSS Demos Available

  - by Javier Puerta

  Enterprise Manager Cloud Control 12c Application Replay Demo Now Available! User Experience Monitoring with Enterprise Manager Cloud Control 12c and Real User Experience Insight 12R1 Now Available! Oracle Enterprise Manager Cloud Control 12c: Database Management Packs demo upgrade     Enterprise Manager Cloud Control 12c Application Replay Demo Now Available! We are pleased to announce the availability of the Oracle Application Replay demo that showcases some of the key capabilities of performing realistic, production scale testing of your web and packaged Oracle applications. This demo specifically focuses on capturing production web traffic from an E-Business Suite application and replaying the captured workload on a test E-Business Suite application to assess the impact of an application infrastructure change on the workload. The target audiences are application developers, quality assurance teams, IT managers and production control staff that deal in day-to-day change management activities and trouble shooting of production environments. Demo Highlights: Enterprise Manager 12c workflows for capturing application workload Seamless integration of Application Replay with Real User Experience Insight for application workload capture Enterprise Manager 12c centralized workflows for replaying captured application workloads in a test environment Demonstrates how to minimize risk when deploying a complex EBusiness Suite application infrastructure change. Rich reporting capability for performance analysis and problem detection User Experience Monitoring with Enterprise Manager Cloud Control 12c and Real User Experience Insight 12R1 Now Available! We are pleased to announce the availability of the Oracle Real User Experience Insight demo that showcases some of the key capabilities of user experience monitoring. This demo specifically focuses on business reporting, integrated performance diagnostics, tracking of customer journey’s through RUEI’s userflow tracking capabilities and it’s Key Performance Indicators tracking and configuration. Demo Highlights: Application-centric dashboard Integration with Oracle Enterprise Manager 12c – JVMD, ADP and BTM Session diagnostics and user session replay Monitoring through “Key Performance Indicators” (KPI) --- create alerts/incidents FUSION Application centric dashboards & integrated BI Oracle Enterprise Manager Cloud Control 12c: Database Management Packs demo upgrade DSS is pleased to announce an upgrade to the Oracle Enterprise Manager Cloud Control 12c: Database Management Packs demo. While retaining the content from the initial release of the demo—Diagnostic and Tuning Packs, Test Data Management and Data Masking, and Real Application Testing—the demo now includes a new Data Masking for Real Application Testing scenario. Demo Features: Diagnostic and Tuning Packs SQL Performance Analyzer Database Replay Data Masking Masking Real Application Testing workloads Testing pending Optimizer statistics Test Data Management

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• Is there a usage count for packages or programs?

  - by math

  Motivation: I want to remove applications I do not use to speed up my package processing tasks like dist upgrades, regular updates, but also for saving disk space and other reasons. I know this is a complex topic so first I will ask my question and second I will give some answers I already found out. Question: How do I find out which package I did not used at all? For example I always use the VLC so I could remove totem package. (Which I could have been used some day, yes.) Of course package dependencies could force me to have programs installed which I will never use. Notes: Find the packages which consume much space via synaptic: Select "Status" in lower left, select "Installed" in upper left, sort column on "size" in upper right. Then you can decide which big packages you really need. Use aptitude autoremove Use ubuntu-tweak's Janitor for removing old kernel packages, old configs, apt-cache entries, etc. Manually search for applications for a given task that you usually solve with your standard app. E.g. Movie player, Music player, Office program, Browser etc. (BTW: this is what I want to be helped with my question) When removing packages I always favour "apt-get purge" over "aptitude remove --purge" as aptitude often will also remove essential packages due to package dependencies. E.g. when removing "evolution" (as I use thunderbird) aptitude wants to remove also "ubuntu-desktop" and 756 other packages as well, while apt-get just removes evolution and its helping pacakges like evolution-common. Ubuntu lense gives me most recent used applications which are candidates for keeping :) Employ deborphan as I read in this related answer: How do I clean up my harddrive? I should certainly keep essential packages: Keep only essential packages This question is pretty much a duplicate of How to see what installed packages I have never used for cleaning purposes but covering only few aspects. However one answer suggests to use a program called unusedpkg but the link seems down. There is also a program called Kleen http://code.google.com/p/kleen/ but it won't compile in 11.10. However I hacked it to compile but the results are unusable, as for example the g++ package was marked as not used for 203, but actually I used it seconds ago for compiling Kleen itself ;) So don't use this tool. On http://wiki.debian.org/DebianPackageInformation I read the the package popularity-contest will produce log files with usage statistics. Unfortunately I didn't enabled the popularity contest so I can't find this log file.

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• What books would I recommend?

  - by user12277104

  One of my mentees (I have three right now) said he had some time on his hands this Summer and was looking for good UX books to read ... I sigh heavily, because there is no shortage of good UX books to read. My bookshelves have titles by well-read authors like Nielsen, Norman, Tufte, Dumas, Krug, Gladwell, Pink, Csikszentmihalyi, and Roam. I have titles buy lesser-known authors, many whom I call friends, and many others whom I'll likely never meet. I have books on Excel pivot tables, typography, mental models, culture, accessibility, surveys, checklists, prototyping, Agile, Java, sketching, project management, HTML, negotiation, statistics, user research methods, six sigma, usability guidelines, dashboards, the effects of aging on cognition, UI design, and learning styles, among others ... many others. So I feel the need to qualify any book recommendations with "it depends ...", because it depends on who I'm talking to, and what they are looking for.  It's probably best that I also mention that the views expressed in this blog are mine, and may not necessarily reflect the views of Oracle. There. I'm glad I got that off my chest. For that mentee, who will be graduating with his MS HFID + MBA from Bentley in the Fall, I'll recommend this book: Universal Principles of Design -- this is a great book, which in its first edition held "100  ways to enhance usability, influence perception, increase appeal, make better design decisions, and teach through design." Granted, the second edition expanded that number to 125, but when I first found this book, I felt like I'd discovered the Grail. Its research-based principles are all laid out in 2 pages each, with lots of pictures and good references. A must-have for the new grad. Do I have recommendations for a book that will teach you how to conduct a usability test? Yes, three of them. To communicate what we do to management? Yes. To create personas? Yep -- two or three. Help you with UX in an Agile environment? You bet, I've got two I'd recommend. Create an excellent presentation? Uh hunh. Get buy-in from your team? Of course. There are a plethora of excellent UX books out there. But which ones I recommend ... well ... it depends. 

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• Can't access some websites using Ubuntu 13.10

  - by Adame Doe

  Something's wrong with Ubuntu. Since I've upgraded to 13.10, I can't access some websites for no apparent reason. I've tried everything imaginable to solve this problem : Made sure that MTUs are the same, Disabled IPv6 in both the network manager and used browsers, Deactivated my network keys, DMZed my computer, Used other DNS like Google and OpenDNS, Checked that no firewall was running my computer ... And it's the same result. I even tried to reinstall Ubuntu a couple of times, but no luck. The most annoying thing about it is I can't access wordpress.org! So, there's no way it could be an ISP restriction of some kind. When I use a VPN, I can access pretty much anything. I'm really frustrated because I have to use wordpress.org very often. Any clue? ifconfig adame@adame-ws:~$ ifconfig eth0 Link encap:Ethernet HWaddr 00:26:18:3d:b0:7c inet addr:10.42.0.1 Bcast:10.42.0.255 Mask:255.255.255.0 inet6 addr: fe80::226:18ff:fe3d:b07c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8024 errors:0 dropped:0 overruns:0 frame:0 TX packets:7966 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:684480 (684.4 KB) TX bytes:616608 (616.6 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:8222 errors:0 dropped:0 overruns:0 frame:0 TX packets:8222 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:568269 (568.2 KB) TX bytes:568269 (568.2 KB) wlan0 Link encap:Ethernet HWaddr 00:19:70:40:85:eb inet addr:192.168.2.3 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::219:70ff:fe40:85eb/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1464 Metric:1 RX packets:123705 errors:0 dropped:0 overruns:0 frame:0 TX packets:98141 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:94963545 (94.9 MB) TX bytes:10387470 (10.3 MB) /etc/hosts 127.0.0.1 localhost 127.0.1.1 adame-ws ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters tracepath wordpress.org 1: adame-ws.local 0.092ms pmtu 1500 1: 192.168.2.1 1.300ms asymm 2 1: 192.168.2.1 1.060ms asymm 2 2: no reply 3: no reply 4: no reply 5: no reply 6: no reply 7: no reply 8: no reply ... keep on going like that ping wordpress.org adame@adame-ws:~$ ping wordpress.org PING wordpress.org (66.155.40.250) 56(84) bytes of data. --- wordpress.org ping statistics --- 10 packets transmitted, 0 received, 100% packet loss, time 9071ms

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• Application stuck in TCP retransmit

  - by SandeepJ

  I am running Linux kernel 3.13 (Ubuntu 14.04) on two Virtual Machines each of which operates inside two different servers running ESXi 5.1. There is a zeromq client-server application running between the two VMs. After running for about 10-30 minutes, this application consistently hangs due to inability to retransmit a lost packet. When I run the same setup over Ubuntu 12.04 (Linux 3.11), the application never fails If you notice below, "ss" (socket statistics) shows 1 packet lost, sk_wmem_queued of 14110 (i.e. w14110) and a high rto (120000). State Recv-Q Send-Q Local Address:Port Peer Address:Port ESTAB 0 12350 192.168.2.122:41808 192.168.2.172:55550 timer:(on,16sec,10) uid:1000 ino:35042 sk:ffff880035bcb100 <- skmem:(r0,rb648720,t0,tb1164800,f2274,w14110,o0,bl0) ts sack cubic wscale:7,7 rto:120000 rtt:7.5/3 ato:40 mss:8948 cwnd:1 ssthresh:21 send 9.5Mbps unacked:1 retrans:1/10 lost:1 rcv_rtt:1476 rcv_space:37621 Since this has happened so consistently, I was able to capture the TCP log in wireshark. I found that the packet which is lost does get retransmitted and even acknowledged by the TCP in the other OS (the sequence number is seen in the ACK), but the sender doesn't seem to understand this ACK and continues retransmitting. MTU is 9000 on both virtual machines and througout the route. The packets being sent are large in size. As I said earlier, this does not happen on Ubuntu 12.04 (kernel 3.11). So I did a diff on the TCP config options (seen via "sysctl -a |grep tcp ") between 14.04 and 12.04 and found the following differences. I also noticed that net.ipv4.tcp_mtu_probing=0 in both configurations. Left side is 3.11, right side is 3.13 <<net.ipv4.tcp_abc = 0 <<net.ipv4.tcp_cookie_size = 0 <<net.ipv4.tcp_dma_copybreak = 4096 14c11 << net.ipv4.tcp_early_retrans = 2 --- >> net.ipv4.tcp_early_retrans = 3 17c14 << net.ipv4.tcp_fastopen = 0 >> net.ipv4.tcp_fastopen = 1 20d16 << net.ipv4.tcp_frto_response = 0 26,27c22 << net.ipv4.tcp_max_orphans = 16384 << net.ipv4.tcp_max_ssthresh = 0 >> net.ipv4.tcp_max_orphans = 4096 29,30c24,25 << net.ipv4.tcp_max_tw_buckets = 16384 << net.ipv4.tcp_mem = 94377 125837 188754 >> net.ipv4.tcp_max_tw_buckets = 4096 >> net.ipv4.tcp_mem = 23352 31138 46704 34a30 >> net.ipv4.tcp_notsent_lowat = -1 My question to the networking experts on this forum : Are there any other debugging tools or options I can install/enable to dig further into why this TCP retransmit failure is occurring so consistently ? Are there any configuration changes which might account for this weird behaviour.

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• Why shouldn't I be using public variables in my Java class?

  - by Omega

  In school, I've been told many times to stop using public for my variables. I haven't asked why yet. This question: Are Java's public fields just a tragic historical design flaw at this point? seems kinda related to this. However, they don't seem to discuss why is it "wrong", but instead focus on how can they use them instead. Look at this (unfinished) class: public class Reporte { public String rutaOriginal; public String rutaNueva; public int bytesOriginales; public int bytesFinales; public float ganancia; /** * Constructor para objetos de la clase Reporte */ public Reporte() { } } No need to understand Spanish. All this class does is hold some statistics (those public fields) and then do some operations with them (later). I will also need to be modifying those variables often. But well, since I've been told not to use public, this is what I ended up doing: public class Reporte { private String rutaOriginal; private String rutaNueva; private int bytesOriginales; private int bytesFinales; private float ganancia; /** * Constructor para objetos de la clase Reporte */ public Reporte() { } public String getRutaOriginal() { return rutaOriginal; } public String getRutaNueva() { return rutaNueva; } public int getBytesOriginales() { return bytesOriginales; } public int getBytesFinales() { return bytesFinales; } public float getGanancia() { return ganancia; } public void setRutaOriginal(String rutaOriginal) { this.rutaOriginal = rutaOriginal; } public void setRutaNueva(String rutaNueva) { this.rutaNueva = rutaNueva; } public void setBytesOriginales(int bytesOriginales) { this.bytesOriginales = bytesOriginales; } public void setBytesFinales(int bytesFinales) { this.bytesFinales = bytesFinales; } public void setGanancia(float ganancia) { this.ganancia = ganancia; } } Looks kinda pretty. But seems like a waste of time. Google searches about "When to use public in Java" and "Why shouldn't I use public in Java" seem to discuss about a concept of mutability, although I'm not really sure how to interpret such discussions. I do want my class to be mutable - all the time.

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• extreme slowness with a remote database in Drupal

  - by ceejayoz

  We're attempting to scale our Drupal installations up and have decided on some dedicated MySQL boxes. Unfortunately, we're running into extreme slowness when we attempt to use the remote DB - page load times go from ~200 milliseconds to 5-10 seconds. Latency between the servers is minimal - a tenth or two of a millisecond. PING 10.37.66.175 (10.37.66.175) 56(84) bytes of data. 64 bytes from 10.37.66.175: icmp_seq=1 ttl=64 time=0.145 ms 64 bytes from 10.37.66.175: icmp_seq=2 ttl=64 time=0.157 ms 64 bytes from 10.37.66.175: icmp_seq=3 ttl=64 time=0.157 ms 64 bytes from 10.37.66.175: icmp_seq=4 ttl=64 time=0.144 ms 64 bytes from 10.37.66.175: icmp_seq=5 ttl=64 time=0.121 ms 64 bytes from 10.37.66.175: icmp_seq=6 ttl=64 time=0.122 ms 64 bytes from 10.37.66.175: icmp_seq=7 ttl=64 time=0.163 ms 64 bytes from 10.37.66.175: icmp_seq=8 ttl=64 time=0.115 ms 64 bytes from 10.37.66.175: icmp_seq=9 ttl=64 time=0.484 ms 64 bytes from 10.37.66.175: icmp_seq=10 ttl=64 time=0.156 ms --- 10.37.66.175 ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 8998ms rtt min/avg/max/mdev = 0.115/0.176/0.484/0.104 ms Drupal's devel.module timers show the database queries aren't running any slower on the remote DB - about 150 microseconds whether it's the local or the remote server. Profiling with XHProf shows PHP execution times that aren't out of whack, either. Number of queries doesn't seem to make a difference - we seem the same 5-10 second delay whether a page has 12 queries or 250. Any suggestions about where I should start troubleshooting here? I'm quite confused.

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• Why does traceroute take much longer than ping?

  - by PHP

  How to explain this? C:\Documents and Settings\Administrator>tracert google.com Tracing route to google.com [64.233.189.104] over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms 192.168.0.1 2 7 ms <1 ms <1 ms reserve.cableplus.com.cn [218.242.223.209] 3 108 ms 135 ms 163 ms 211.154.70.10 4 * * * Request timed out. 5 2 ms * 1 ms 211.154.64.114 6 1 ms 1 ms 1 ms 211.154.72.185 7 1 ms 1 ms 1 ms 202.96.222.77 8 2 ms 1 ms 2 ms 61.152.81.145 9 1 ms 2 ms 1 ms 61.152.86.54 10 1 ms 1 ms 1 ms 202.97.33.238 11 2 ms 2 ms 2 ms 202.97.33.54 12 2 ms 1 ms 2 ms 202.97.33.5 13 33 ms 33 ms 33 ms 202.97.61.50 14 34 ms 34 ms 34 ms 202.97.62.214 15 34 ms 186 ms 37 ms 209.85.241.56 16 35 ms 35 ms 44 ms 66.249.94.34 17 34 ms 34 ms 34 ms hkg01s01-in-f104.1e100.net [64.233.189.104] Trace complete. So average time should be :1+7+108+2+1+1+2+1+1+2+2+33+34+34+35+34+34+35+34,which is a lot bigger than ping C:\Documents and Settings\Administrator>ping google.com Pinging google.com [64.233.189.104] with 32 bytes of data: Reply from 64.233.189.104: bytes=32 time=34ms TTL=241 Reply from 64.233.189.104: bytes=32 time=34ms TTL=241 Reply from 64.233.189.104: bytes=32 time=34ms TTL=241 Reply from 64.233.189.104: bytes=32 time=34ms TTL=241 Ping statistics for 64.233.189.104: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 34ms, Maximum = 34ms, Average = 34ms

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• How do I make my internal dns forward requests to a given server

  - by ankimal

  We have a DNS server internally that looks up IP addresses for all internal hosts and connects to root dns servers for all other domains (the rest of the internet). Here is my config options { listen-on port 53 { 127.0.0.1;any; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query {192.168.1.0/24; 127.0.0.1; }; recursion yes; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; view “internal” { // What the home network will see match-clients { 127.0.0.1;any; }; match-destinations { 127.0.0.1;any; }; recursion yes; zone "." IN { type hint; file "named.ca"; }; include "internal_zones.conf"; }; We need to tweak this to go to our ISPs dns, x.y.z.w instead of the root dns servers if the host cannot be resolved internally. Config: Fedora 10/Bind 9.5.2

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• Can ping IP address and nslookup hostname but cannot ping hostname

  - by Puddingfox

  I have a DNS server set up on one of my machines using BIND 9.7 Everything works fine with it. On my Windows 7 desktop, I have statically-assigned all network values. I have one DNS server set -- my DNS server. On my desktop, I can ping a third machine by IP fine. I can nslookup the hostname of the third machine fine. When I ping the hostname, it says it cannot find the host. / C:\Users\James>nslookup icecream Server: cake.my.domain Address: xxx.xxx.6.3 Name: icecream.my.domain Address: xxx.xxx.6.9 C:\Users\James>ping xxx.xxx.6.9 Pinging xxx.xxx.6.9 with 32 bytes of data: Reply from xxx.xxx.6.9: bytes=32 time<1ms TTL=255 Reply from xxx.xxx.6.9: bytes=32 time<1ms TTL=255 Reply from xxx.xxx.6.9: bytes=32 time<1ms TTL=255 Reply from xxx.xxx.6.9: bytes=32 time<1ms TTL=255 Ping statistics for xxx.xxx.6.9: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms C:\Users\James>ping icecream Ping request could not find host icecream. Please check the name and try again. I have also specified the search domain as my.domain xxx.xxx and my.domain substituted for security Why can I not ping by hostname? I also can not ping using the FQDN. The problem is that this problem is shared by all applications that resolve hostnames. I cannot use PuTTY to SSH to my machines by hostname; only by IP

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• Intel Core i7 QuadCore on HP Pavilion dv7 Overheating Issues

  - by kellax

  I bought a brand new HP notebook: HP Pavilion dv7-6b21em BeatsAudio edition. The notebook is about 2 months old and has pretty nasty overheating problem. I mainly use it for development however i do play some games. The disturbing thing is that the computer is loud on pretty simple tasks. Here are the specs: CPU: Intel Core i7-2670QM QuadCore ( 8 threads ) @ 2.20 GHz RAM: ( 8GB ) 2x 4GB @ 1066 HDD: 1TB 7200 GPU: ATI Radeon HD 6770M 1GB Dedicated DDR OS: Windows 7 64bit Enterprise I have an external monitor runing on VGA port an 22' Samsung SyncMaster S24B300 CPU Heat Statistics Platform: rPGA 988B (Socket G2) Frequency: cca. 3000 Mhz VID: 1.1809 - 1.2059 v Revision: D2 CPUID: 0x206A7 TDP: 45.0 Wats, Lithographu: 32 nm Heat: Tj. Max: 100*C, Power 4.5 - 5.9 Wats Core #0: 63*C Load on all is about 0 to 2% Core #1: 65*C Core #2: 66*C Core #3: 67*C I opened the notebook the fan is working fine there is no dust but still right now the fan is pretty loud even tho all i have open is FireFox. When i run a game the heat jumps to whopping 90-97*C. It has not shut down due to overheating yet but the loud fan is pretty annoying considering I'm not really doing anything stressfull. Is there anything i can do to fix this is it maybe a BIOS issue ? I have all drivers updated tho to the latest. I have very few background processes running consuming bare 2GB of RAM and about 2% of CPU. I had it serviced they said there is nothing wrong with it. But i feel that a Notebook that costs 1.2k Euros cant be like this.

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• How do I get more information on a potential network freeloader?

  - by Dov

  I have a home network set up, complete with a relatively good password. I'm in Mac OS X 10.6 (Snow Leopard) and have been noticing, on occasion, a computer showing up in my Finder's Shared section, that is not one of my own (the "pe-xpjalle" box pictured below). He has a tendency to come and go. How can I figure out his MAC address or something, so I can block him? I checked my "Logs and Statistics" in the Airport Utility, and didn't see that computer under DHCP clients. I'd rather not change my password, since I have quite a few devices I'd have to update. Is there any other reason he's show up on my network besides having guessed my password? Update: I fixed the Dropbox URL above (how embarrassing, I'm new to Dropbox. Thanks for the heads up, Doug.) Update 2: I tried clicking on "Connect as..." just for the hell of it, and got the dialog below. Now I have even less an idea what's going on than before. I don't have Parallels of VMware running, just the following: Transmission, NetNewsWire, Mail, Things, Safari, iTunes, Photoshop, Pages, Yojimbo, Preferences, AppleScript Editor, Software Update, Airport Utility, and Terminal. I don't think any of those create a virtual network machine, right? And no VMware machine of mine has ever had a name resembling "pe-xpjalle". Update 3: I just changed my passwords on both my N- and G-only networks, and I'm still seeing this, so I highly doubt that it's someone who's figured out my password (twice now). I'm really stumped.

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