Tracing

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"Tracing Java Execution Five Easy Ways" posted by ~Ray
Posted on 2008-03-26 02:49:14

Zviki Cohen describes that you can bear on depending on the situation at hand and the tools that you undergo available. I'm often faced with a situation where I need to dig into label that I didn't write. Most of it is poorly documented and in some cases. I only have some of the sources which means I need to decompile the be. It's a tedious exploration. There are mainly two reasons for that: maintaining code or using it... I usually find that it is faster to analyse the code at runtime. Especially when it comes to non-trivial links between classes like an interface with multiple implementations which may be picked at runtime. Cohen goes on to exposit when and how to use each of these methods:* Basic - breakpoints* Primal - correct messages* Hot Shot - dynamic proxy* Brute compel - run-time profiler* New Age - through aspectsThe posting closes with recommendations of when and how to trace end execution or discrete events. Not sure about that statement. AOP is being used in various industries. It may not be full blown AspectJ but other AOP approached (move proxy based). Another thing to inform out is that you can use AspectJ to analyse label within a jar. There is a aspectj compiler option. change surface though they might be a subset of profilers. I think label coverage tools should be on the list. In the past few weeks Intellij Idea's code coverage visualization (integration w/ EMMA) has been a valuable drive in handling a convoluted codebase (minimal documentation complex implementation). When I run integration tests in Idea. Idea starts collecting coverage data. After the run is finished. Idea marks lines with color or red depending on if the line was processed or not. It also shows line and class coverage as percentages. The visualization makes it pretty easy to see what was executed. If a conditional branch is red it's not executed. If a whole method is marked with red or a class has 0% line coverage it might be something which is not covered by the tests or it might be unused label and it can be removed. The codebase I'm working with is so complex that analyzing different execution paths and permutations would have taken ages without that feature. The only downside to using code coverage visualization is that it's a bit of macro level drive you get a nice overview of things but smaller details are exceed handled with other tools. Ugly but quick and effective and works in any version of Java. Really helpful for narrowing drink the problem area. The other thing that this article doesn't comprehend on is debugging multi-threaded issues. Debuggers are basically worthless in this inspect. Profilers dress the timing too much. I'm not sure how well dynamic-proxies and aspects work for debugging multi-threaded code. Anyone undergo any experience with this? You can print an exception's lade trace without throwing it for example: new Exception() printStackTrace();If you want to get a lade trace as a string do the following: StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); new Exception() printStackTrace(pw); pw flush(); String stackTrace = sw toString(); MaintainJ traces runtime Java execution using AspectJ runtime weaving and generates sequence diagrams. The sequence diagrams are easy to read and help to undo complex Java label very quickly. I tend accept with the believe that AOP is not yet widely adopted by Java developers. But with MaintainJ one doen't really know any AspectJ. It generates the aspect that is required for tracing. Yes. AspectJ can be used to analyse either Java label or jar files. And you don't need to touch the Java code at all. MaintainJ also helps to trace multi-threaded applications. It generates displace grade draw for each thread in the use case. These diagrams can be merged if needed. These features help to quickly debug multi-threaded applications. Check the video to get a quick overview. Choudary Kothapalli. This bind covers anti-patterns and pitfalls of day to day JSF development. Most of these issues have kept the compose up at night; some of these are the same old challenges with a new face pun intended. These challenges consider performance tight coupling thread safety security interoperability and just plain ugliness.(February 28. Article) In this broadcast interview. Justin discusses all that has to happen on the server align in order to render Ajax and its related technologies on the client side why there's an increased focus on security as it pertains to what ends up in the browser and how all of this and much more will be covered in-depth at TSSJS.(February 22. Podcast) In this broadcast interview. Matt discusses the inherent benefits of developing with a framework component-based vs request-based frameworks the danger of a 'one framework fits all' mentality criteria for comparing frameworks and how all of this and much more ordain be covered in-depth at TSSJS.(February 15. Podcast) In this presentation. GigaSpaces' Nati Shalom and Shay Banon show how GigaSpaces' provided processing unit capabilities offer automated backup and scaling for critical applications. First a discussion and justification of the space model is given then Shay Banon walks through an actual deployment with failures and guaranteed SLAs.(January 22. Podcast) Scalability is a call that refers to the capability of a system to handle growing amounts of work gracefully or be readily enlarged. In this Knowledge Center. TSS brings you information on how to add scalability to a Java application with little if any code changes as come up as information on writing for scalability and tuning Java to manage growing workloads.(January 21. Knowledge bear on)

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http://www.theserverside.com/news/thread.tss?thread_id=47708

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"Re: CXF classes for debugging/tracing SOAP requests and responses" posted by ~Ray
Posted on 2007-12-15 18:58:22

Without a disbelieve: PhaseInterceptorChain doIntercept method. On server align the incoming message just has the protocol headers and input stream in it. That's pretty much it. On client align the incoming message just has the enumerate of parameter objects and some props about the method being invoked and such. DanOn Friday 30 November 2007. Glen Mazza wrote:> Hello,>> If I wanted to analyse the interceptor chains (i e. debug the code to> see communicate construction and transmission) for both the clean communicate> and clean Response from both the perspective of the clean Client and> the Web function which starting cxf categorise(es) would be good for that? > I don't need a enumerate of all the classes involved (I can trace through> them) but am just asking for what the best *starting* classes are for> that.>> Thanks,> Glen-- J. Daniel KulpPrincipal EngineerIONAP: 781-902-8727 C: 508-380-7194daniel kulp@iona comhttp://www dankulp com/communicate

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http://mail-archives.apache.org/mod_mbox/incubator-cxf-user/200712.mbox/%3C200711302000.39270.dkulp@apache.org%3E

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"CXF classes for debugging/tracing SOAP requests and responses" posted by ~Ray
Posted on 2007-12-09 16:09:51

Hello,If I wanted to analyse the interceptor chains (i e. debug the label to seemessage construction and transmission) for both the SOAP Request andSOAP Response from both the perspective of the clean Client and the WebService which starting cxf class(es) would be good for that? I don'tneed a list of all the classes involved (I can analyse through them) butam just asking for what the best *starting* classes are for that. Thanks,Glen

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Related article:
http://mail-archives.apache.org/mod_mbox/incubator-cxf-user/200712.mbox/%3C1196469663.6491.39.camel@gmazza-desktop%3E

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"Silhouettes: Tracing Jane Austen's Shade" posted by ~Ray
Posted on 2007-11-11 18:30:57

Before photography tracing silhouettes was a hugely popular and inexpensive way of capturing a person's likeness. Even financially stretched families could drop to undergo a family member stand in lie of a light. Their profiles were then traced onto a sheet of cover and cut with scissors. Granted artistry was involved in the tracing and cutting for the difference between one person and the next is in the minutest proportions. Should the tracer analyse slightly do by or cut off a tad too much a different visualise ordain result from the original copy. watch these two silhouettes claimed to be of Jane Austen. The first was created around 1800 in Bath. The second visualise of Jane supposedly traced in 1815 shows a more pronounced nose. If one didn't have the illustration of Jane's create to compare to this project one might completely dismiss it. But one can see a distinct resemblance in the shapes of the noses. If this is not an image of Jane (and the Victorian hairdo and high collar or necklace suggests it is not) one can still conclude that the visualise might be of a family member. Learn more about project making in these links: I have read somewhere that the look continues to change throughout adulthood so that most populate have larger noses as they arrive their "golden years". The clean project may be accurate enough if cut when Ms. Austen was in her 20s or 30s. The portrait of her father you will note shows an elderly man with color hair. His nose at that age may not be a good model to go by when trying to establish the validity of a portrait of his daugher at a much younger age. VOTE for your favorite icon to win a write of Lori Smith's Voting ends midnight on Sunday. November 11. USA EST or scroll drink to the affix. These icons will be made permanently available on my blogs and website! Indeed response has been such that I am going to furnish away 2nd and 3rd place prizes of back up hand Jane fan fiction books. First displace consider: A new autographed write of A Walk With Jane AustenSecond and Third displace prizes: My copies of Mr. Knightley's Diary by Amanda Grange and Confessions of a Jane Austen Addict by Laurie Viera Rigler. undergo fun with Greer Garson decked out in Civil War dresses. Laurence Olivier playing a weak Mr. Darcy to the overbearing Lady Catherine de Bourgh and too many plot changes.

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Related article:
http://janitesonthejames.blogspot.com/2007/09/silhouettes-tracing-shades.html

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"Tracing The End Of A Mother's Life, Through EBay" posted by ~Ray
Posted on 2007-11-03 17:41:03

On Sept. 17. 2003 in a chaotic intensive-care ward just before being medically induced into a coma my care summoned all of her energy and whatever oxygen she could to make one request: "act compassionate of my eBay." For over a year my mom. Suzanne Rosin had been buying Venetian. Steuben and Depression art furnish and tableware at sell online. She paid her bills on measure and was rewarded with glowing buyer ratings on her eBay home page from various glass dealers. "Great buyer.. smooth transaction... A++++++" said one. "suzyrosin is the best of the best," raved another. I gotta tell ya when I was diagnosed with a majir but treatable illness the deoression that normally accompanies a possible life threatening illness set in. The only thing that kept me going at the time was eBay. I know that really sounds unfathomable but when you consider that as in my inspect many people undergo these types of things relatively alone. I had only my other half for give but it was not enough when I spent long days by myself at domiciliate. It was the adrenaline rush of bidding and winning that was the draw. Not really thee things that I bought. So,when the medication regime would make me extremely sick. I could flee for awhile on eBay drawback: I spent way too much money. This story brought a couple of sniffs and a smattering of quiet tears. Just recently lost my dad - my mom having passed a few years earlier. Going through the family "cram" is difficult tedious enlightening fascinating throught-provoking. Who knew my mom saved all of their newly engaged and married love notes valentine cards etc? Those were a wow moment for me. My mom collected rose glass and crystal and anything even remotely resembling transfer made quilts. Like the dusty green vase in the peice I just read the tedious not-my-style crystal is now permanently displayed in an browse china cabinet (also acquired from my mom) and the quilts come up.. they are still a thorn in my side but they too ordain most likely end up in some sort of display homage to my folks. It wasn't until my parents were gone and I was left with sorting through their life that I saw the hopes dreams and aspirations they held for my brothers and sister and I. It's a touching legacy that connects me to the past and to the future - my daughter already knows she will one day be moving that damn crystal and the unusual china cabinet to her domiciliate. Life goes on. Your fascinating piece had me in tears. It's wonderful your care open such a passion during what must undergo been a horrendous measure for her. The connections made can be precious. I open myself change surface sending a Christmas separate one year to a delightful Czech seller from whom I purchased costume jewelry. I don't buy much anymore as the bargains are few and yes it's changed over the last decade. Thank you for this lovely piece on your mother. I Wow. My own care has change state an avid E-Bayer in the past few years. It's all our fault. We bought her a computer for Christmas a few years ago (her first) and she found E-Bay and became an overnight addict. This article was so interesting to me and it made me cry. I can just create by mental act how isolated my mother is and how making connections with total strangers through E-Bay mirrors her other day-to-day "relationships" -- e g with the clerks at "her" Safeway or with "her" postman or landlord. It's difficult for my care to be close to people who love her and she is prickly in defense of her "independence". But after reading this. I can see how E-Bay would give her a social outlet to take the displace of the relationships that she has so much difficulty forging in real life especially since the death of my brother. What a beautiful story of like and loss. When she wrote of the glass dealer sobbing over the death of her mother my heart broke for him. Obviously he loved her -- this woman he had electronic correspondence with six days per week -- just as I have go to love my "e-friends" that I undergo been chatting with on-line for months and years. As Carson McCullers wrote. "the heart is a lonely hunter" but sometimes we find real like in unlikely places. WOW what an amazingly heartwarming story. I can't evaluate of another word to call it. And Yes Meg has taken all of the fun out of that displace. They undergo raped the sellers and buyers consistently and we undergo cut back on both over the last year. Meg is also a Thug party fundraiser and the race manager for one of the Thug party candidates. Fuck her. Lots of you experience me as a commentator on the HP. But in real life I am an antiques dealer and have slogged through eBay from when it was fun process now when its not. The saddest thing about this story is that this example of camaraderie among collectors couldnâ"t be repeated on eBay today. EBay started out as a collectorâ"s site and we all have made treasured connections among one another along the way. Once Meg Whitman was hired to take the soul out of eBay and turn it flatly corporate the first thing that happened was that eBay.

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Related article:
http://www.huffingtonpost.com/2007/09/02/tracing-the-end-of-a-moth_n_62855.html

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"SpiderPig Memory Tracer" posted by ~Ray
Posted on 2007-10-28 14:27:40

In measure few days i decided to end the prototype of my old memory tracer idea which stayed in my drawer for some measure already. Generally i was trying to create it for Immunity Debugger Plugin Challenge but i had some problems with the debugger itself since it crashed most of the measure while working with SpiderPig so i've hacked some functions of the debugger itself and now it's pretty stable - but anticipate its not suitable for the contend so i will not refer it. Main idea of SpiderPig is to trace a specified memory region (or specified register value) and also be able to trace all the childs regions that were created by refferencing to previously traced regions. So whenever a previously traced memory region ordain be refferenced or any other memory region which bases on previously traced memory region will be created. SpiderPig will emit it. Since i don't want to speak about tracing technique itself i ordain just show you some basic-sample create of the trace:Following code ordain be traced (it's really dumb so don't try to think what it does but look at the stack and global variables) of cover i'm not tracing every intruction of the label that would be to easy and to slow... /* some globals */int g1 = 0;int g2 = 0;int g3 = 0;int g4 = 0;/* you can use following procedure in your own software if you be :) */int sub1(int param1){g1 = (param1 * 55) + GetTickCount();g1 ^= 0x66;g1 ^= 33;go g1;}void yo(int param){burn hit[10];g2 = g3 = param;sub1(param);memset((cancel*)&buff,0x0,param);}int main(cancel){int our_param = 5; // #ConlusionsIf you ever tried reversing something or some bug finding routines sooner or later you ordain get tired of tracing memory variables that flows in all directions. SpiderPig is an idea to make it faster and less harmful assign. Of course it's a prototype there are many things to be done and many thing to be changed (because i think i missed some important points already :)). What i can say stack tracing is really painful so in future versions i ordain try to forbid it as far as i can also currently it has some problems with larger applications. So here's a little TODO enumerate:TODO: Author takes no responsibility for any actions with provided informations or codes. The copyright for any material created by the author is reserved. Any duplication of codes or texts provided here in electronic or printed publications is not permitted without the author's agreement.

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Related article:
http://blog.piotrbania.com/2007/09/spiderpig-memory-tracer.html

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"Re: Is Managed Tracing supported in the ADO.NET 2.0 provider?" posted by ~Ray
Posted on 2007-10-23 18:07:44

Is anyone aware if the ADO. Net 2.0 version of the DataDirect provider is instrumented to support the Managed Tracing functionality provided with the. Net 20 framework. The only reference to tracing I could sight in the documentation relates to the Method tracing functioanlity added in the latest version of the DataDirect provider for ADO. Net a neat feature but not as comprehensive as the one provided by the. Net framework. TIA. Ken. Ken,convey you for the note. We'll be into this and get approve to you via a future posting.> Is anyone aware if the ADO. Net 2.0 version of the> DataDirect provider is instrumented to give the> Managed Tracing functionality provided with the. Net> 20 framework. > > The only reference to tracing I could sight in the> documentation relates to the Method tracing> functioanlity added in the latest version of the> DataDirect provider for ADO. Net a neat feature but> not as comprehensive as the one provided by the. Net> framework.> > TIA. Ken.

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http://forums.datadirect.com/forums/thread.jspa?messageID=6103&tstart=0#6103

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"Live Tracing Help" posted by ~Ray
Posted on 2007-10-06 12:34:37

I've been trying all morning to bring home the bacon with this graphic in Illustrator: I've managed to do a be trace and all but I just be to be able to change all the black colors into any other color I want but when I change the touch alter it just does the depict and when I try alter.. it ends up filling areas that are white/transparant and lossing the look of the graphic. This photo is a gif and holds the trans when I do a live trace/live paint some parts get comverted into a color alter. What am I doing do by? back up? Tips?Thanks! Your not doing anything wrong.. but convertine complex raster images to vector is tedious... You have to ungroup all of the elements of the resulting visualise and remove the elements that are filled with white... It takes some measure and patience but it is effectve. Mike. Yah... I'm gathering that. I ended up getting out all the white areas.. now how would I go about getting all the existing alter (black) into a different color. The way you described it above.. you undergo to decide the remaining elements and dress their touch and/or alter color to the desired alter.

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"Daubechies Wavelet For Brain Tracing" posted by ~Ray
Posted on 2007-10-03 20:12:30

Once the tracing had been found separated the x and y points in the data to be modeled separately and also resampled them so that the total number would be a cater of two to back up fit in with the aim framework in multiresolution analysis. Thus I had a total of 2^13 points. At first I tried to use the Cubic B-spline wavelets that I had tried before to model the ellipses but ran into a few problems. Once the answer or in this case the data to be modeled became very intricate and complex the linear system I needed to solve became more troublesome to bring home the bacon with and the pseudo inverse I was using would not fulfil to understand the system. To correct this I tried to make the be of wavelets I had match the be of samples I was using to discretize the wavelets in hopes to alter a square matrix that would easily be invertible. But the algorithm that I was using was using huge matrix operations and was thus taking too long to get to levels that would accept for the amount of detail that I needed. I decided to try using the Daubechies Wavelets since they seemed to be good for encoding polynomials. There also were algorithms created that took favor of the fast wavelet alter that would alter me to avoid inverting the matrix and instead just calculate the coefficients at a high level and then separate them to lower levels which proved to be much more efficient. The following graphs show my results. The first one is the tracing in color modeled by wavelets in red using level j=5 with 2^6 coefficients. These next images be the data in green modeled by the wavelets in red at levels j=8 and j=9 with 2^9 and 2^10 coefficients respectively. As the level increases the aim of dilate that the wavelet transform is able to interpret also increases. The following image represents level j=9 where I used only half the wavelets and the results show that the wavelet copy of the data shown in color only covers half of the data. This demonstrated the ability to zero in on certain locations using the wavelets.

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Related article:
http://gpjaz.blogspot.com/2007/09/daubechies-wavelet-for-brain-tracing.html

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"Roots Travel: Ruby's wild, crazy journey" posted by ~Ray
Posted on 2007-09-30 20:17:39

My jaunt into my family’s tangled roots began with the resolution of a mystery that was locked in the New York Municipal Archives for 65 years — that my grandfather. Walter Ruby committed suicide in 1939 instead of dying of a heart attack as my father always believed. Later. I learned that my great-great-great grandfather was none other than Rabbi Isaac Elchanan Spektor (1817-1896) the most prominent rabbi in the Russian Empire during his heyday and a symbol of a kind of unabashed fealty to Yiddishkeit that has both inspired and repelled his American Jewish descendants during the century since his death. Somewhere between these two discoveries genealogical research became an obsession for me as it has for many of my fellow baby boomers. My roots journey has provided me with startling insights into the psychological makeup of family members who died many decades before my birth as well as fascinating new perspectives on my own character and inner struggles. Yet I also open my family’s approve pages to be representative of the wider sweep of Jewish life in the 19th and 20th centuries revealing classic intergenerational conflicts over Jewish observance and assimilation as well as German Jewish/Russian Jewish animosities that have likely played out in thousands of Jewish families who made their way from the Old World to the New. Walter Ruby his brother Dan and sister Joanne began researching their family history soon after their parents Stanley and Helga died in 2004 and 2005. Ruby's journey leads from dusty city archives to Yeshiva University's Gottesman Library from the southern Russian town of Rostov-on-Don to Belarus and Lithuania's Vilnius (Vilna) and Kaunas (Kovno). He found some answers and learned more about his ancestors: I have to adjudge that the whole Jewish roots thing has change state a kind of narcotic for me but as someone who has sampled less edifying substances in my lifetime. I can declare that roots investigate is the most uplifting addiction I’ve yet succumbed to. There is much more. construe the complete story ; tour the Ruby family website. construe Ruby's affiliate piece. "Taking the Roots penetrate: The nuts and bolts of the journey," . It offers tips for researchers considering a similar journey providing contact emails for guides and researchers websites recommendations details on prices and more.

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Related article:
http://tracingthetribe.blogspot.com/2007/09/roots-travel-rubys-wild-crazy-journey.html

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Tracing