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  • How to find a random point in a quadrangle?

    - by Gregg Cleland
    Hi! I have to be able to set a random location for a waypoint for a flight sim. The maths challenge is straightforward: "To find a single random location within a quadrangle, where there's an equal chance of the point being at any location." Visually like this: http://screencast.com/t/NTUxMzJhZGQ An example ABCD quadrangle is: A:[21417.78 37105.97] B:[38197.32 24009.74] C:[1364.19 2455.54] D:[1227.77 37378.81] Thanks in advance for any help you can provide. :-)

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  • UINavigationController as child view of UIViewController

    - by Gregg
    I have an application that isn't nav based. So there is no UINavigationController in the App Delegate. However, I need to switch to a UINavigationController for a piece of the application. Steps I currently took... Create a new Class that extends UIViewController Added a UINavigationController via IB Told IB that the new UIViewController's view is the view for the UINavigationController The problem now is that the File's Owner needs it's view set. But via IB there is no way to specify this. So obviously, I'm not going about this the right way. Any tips in the right direction are much appreciated.

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  • Pushing UIViewController onto a UINavigationController

    - by Gregg
    The other day I asked about using a UINavigationController as a child of a UIViewController. I got that working via the answer. Now what I'm trying to do is push a controller onto the nav stack. When a table cell is touched, I do the following: - (void) showSetup { NSLog(@"Showing Setup"); SetupViewController *controller = [[SetupViewController alloc]initWithNibName:@"SetupViewController" bundle:nil]; self.setupViewController = controller; self.setupViewController.title = @"Setup"; [self.navigationController pushViewController:self.setupViewController animated:YES]; [controller release]; } I can see the log statement in my console, but the view never changes. Am I missing something?

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  • DTrace 0.3.1 for Linux ???

    - by katsumii
    ???Solaris DTrace??????????????Linux??? 3????????????????????????Project News: DTrace - oss.oracle.com2012.10.01: DTrace 0.3.1????????????????????????????????????????????????? DTrace update to 0.2 (Wim Coekaerts Blog)on Feb 22, 2012We just put an updated version of DTrace on ULN. This is version 0.2, another preview (hence the 0.x...) ?????????? DTrace Toolkit ???????????????????? ????????????????????????????Adam Leventhal's blog » DTrace OEL updatehoping some of the dtrace toolkit dtrace goodies would work??Oracle??? "Grid Infrastucure" ???????????????????????# Bin/rwbypid.d Tracing... Hit Ctrl-C to end. ^C PID CMD DIR COUNT 7211 rwbypid.d W 2 2401 cssdmonitor W 6 7007 sshd W 12 7007 sshd R 19 2082 ohasd.bin R 59 2084 ohasd.bin R 59 2202 evmd.bin W 152 2074 ohasd.bin W 1788 2230 evmd.bin R 3528 OS??????????Read/Write??????????????????????????????? ?????????????????????????????

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  • TOMORROW! UPK for Testing Webinar

    - by Karen Rihs
    UPK Webinar:  UPK for Testing September 13, 2012 10 am pacific / 1 pm eastern As an implementation and enablement tool, Oracle’s User Productivity Kit (UPK) provides value throughout the software lifecycle.  Application testing is one area where customers like Northern Illinois University (NIU) are finding huge value in UPK and are using it to validate their systems.  Join us for an OAUG-sponsored event on Sept 13th to hear Beth Renstrom, UPK Product Manager and Bettylynne Gregg, NIU ERP Coordinator, discuss how the Test It Mode, Test Scripts, and Test Cases of UPK can be used to facilitate applications testing. Click Here to Register

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  • Applying WCAG 2.0 to Non-Web ICT: second draft published from WCAG2ICT Task Force - for public review

    - by Peter Korn
    Last Thursday the W3C published an updated Working Draft of Guidance on Applying WCAG 2.0 to Non-Web Information and Communications Technologies. As I noted last July when the first draft was published, the motivation for this guidance comes from the Section 508 refresh draft, and also the European Mandate 376 draft, both of which seek to apply the WCAG 2.0 level A and AA Success Criteria to non-web ICT documents and software. This second Working Draft represents a major step forward in harmonization with the December 5th, 2012 Mandate 376 draft documents, including specifically Draft EN 301549 "European accessibility requirements for public procurement of ICT products and services". This work greatly increases the likelihood of harmonization between the European and American technical standards for accessibility, for web sites and web applications, non-web documents, and non-web software. As I noted last October at the European Policy Centre event: "The Accessibility Act – Ensuring access to goods and services across the EU", and again last month at the follow-up EPC event: "Accessibility - From European challenge to global opportunity", "There isn't a 'German Macular Degernation', a 'French Cerebral Palsy', an 'American Autism Spectrum Disorder'. Disabilities are part of the human condition. They’re not unique to any one country or geography – just like ICT. Even the built environment – phones, trains and cars – is the same worldwide. The definition of ‘accessible’ should be global – and the solutions should be too. Harmonization should be global, and not just EU-wide. It doesn’t make sense for the EU to have a different definition to the US or Japan." With these latest drafts from the W3C and Mandate 376 team, we've moved a major step forward toward that goal of a global "definition of 'accessible' ICT." I strongly encourage all interested parties to read the Call for Review, and to submit comments during the current review period, which runs through 15 February 2013. Comments should be sent to public-wcag2ict-comments-AT-w3.org. I want to thank my colleagues on the WCAG2ICT Task Force for the incredible time and energy and expertise they brought to this work - including particularly my co-authors Judy Brewer, Loïc Martínez Normand, Mike Pluke, Andi Snow-Weaver, and Gregg Vanderheiden; and the document editors Michael Cooper, and Andi Snow-Weaver.

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  • Determine All SQL Server Table Sizes

    Im doing some work to migrate and optimize a large-ish (40GB) SQL Server database at the moment.  Moving such a database between data centers over the Internet is not without its challenges.  In my case, virtually all of the size of the database is the result of one table, which has over 200M rows of data.  To determine the size of this table on disk, you can run the sp_TableSize stored procedure, like so: EXEC sp_spaceused lq_ActivityLog This results in the following: Of course this is only showing one table if you have a lot of tables and need to know which ones are taking up the most space, it would be nice if you could run a query to list all of the tables, perhaps ordered by the space theyre taking up.  Thanks to Mitchel Sellers (and Gregg Starks CURSOR template) and a tiny bit of my own edits, now you can!  Create the stored procedure below and call it to see a listing of all user tables in your database, ordered by their reserved space. -- Lists Space Used for all user tablesCREATE PROCEDURE GetAllTableSizesASDECLARE @TableName VARCHAR(100)DECLARE tableCursor CURSOR FORWARD_ONLYFOR select [name]from dbo.sysobjects where OBJECTPROPERTY(id, N'IsUserTable') = 1FOR READ ONLYCREATE TABLE #TempTable( tableName varchar(100), numberofRows varchar(100), reservedSize varchar(50), dataSize varchar(50), indexSize varchar(50), unusedSize varchar(50))OPEN tableCursorWHILE (1=1)BEGIN FETCH NEXT FROM tableCursor INTO @TableName IF(@@FETCH_STATUS<>0) BREAK; INSERT #TempTable EXEC sp_spaceused @TableNameENDCLOSE tableCursorDEALLOCATE tableCursorUPDATE #TempTableSET reservedSize = REPLACE(reservedSize, ' KB', '')SELECT tableName 'Table Name',numberofRows 'Total Rows',reservedSize 'Reserved KB',dataSize 'Data Size',indexSize 'Index Size',unusedSize 'Unused Size'FROM #TempTableORDER BY CONVERT(bigint,reservedSize) DESCDROP TABLE #TempTableGO Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Visual Studio Exceptions dialogs

    - by Daniel Moth
    Previously I covered step 1 of live debugging with start and attach. Once the debugger is attached, you want to go to step 2 of live debugging, which is to break. One way to break under the debugger is to do nothing, and just wait for an exception to occur in your code. This is true for all types of code that you debug in Visual Studio, and let's consider the following piece of C# code:3: static void Main() 4: { 5: try 6: { 7: int i = 0; 8: int r = 5 / i; 9: } 10: catch (System.DivideByZeroException) {/*gulp. sue me.*/} 11: System.Console.ReadLine(); 12: } If you run this under the debugger do you expect an exception on line 8? It is a trick question: you have to know whether I have configured the debugger to break when exceptions are thrown (first-chance exceptions) or only when they are unhandled. The place you do that is in the Exceptions dialog which is accessible from the Debug->Exceptions menu and on my installation looks like this: Note that I have checked all CLR exceptions. I could have expanded (like shown for the C++ case in my screenshot) and selected specific exceptions. To read more about this dialog, please read the corresponding Exception Handling debugging msdn topic and all its subtopics. So, for the code above, the debugger will break execution due to the thrown exception (exactly as if the try..catch was not there), so I see the following Exception Thrown dialog: Note the following: I can hit continue (or hit break and then later continue) and the program will continue fine since I have a catch handler. If this was an unhandled exception, then that is what the dialog would say (instead of first chance exception) and continuing would crash the app. That hyperlinked text ("Open Exception Settings") opens the Exceptions dialog I described further up. The coolest thing to note is the checkbox - this is new in this latest release of Visual Studio: it is a shortcut to the checkbox in the Exceptions dialog, so you don't have to open it to change this setting for this specific exception - you can toggle that option right from this dialog. Finally, if you try the code above on your system, you may observe a couple of differences from my screenshots. The first is that you may have an additional column of checkboxes in the Exceptions dialog. The second is that the last dialog I shared may look different to you. It all depends on the Debug->Options settings, and the two relevant settings are in this screenshot: The Exception assistant is what configures the look of the UI when the debugger wants to indicate exception to you, and the Just My Code setting controls the extra column in the Exception dialog. You can read more about those options on MSDN: How to break on User-Unhandled exceptions (plus Gregg’s post) and Exception Assistant. Before I leave you to go play with this stuff a bit more, please note that this level of debugging is now available for JavaScript too, and if you are looking at the Exceptions dialog and wondering what the "GPU Memory Access Exceptions" node is about, stay tuned on the C++ AMP blog ;-) Comments about this post by Daniel Moth welcome at the original blog.

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  • Detect Unicode Usage in SQL Column

    One optimization you can make to a SQL table that is overly large is to change from nvarchar (or nchar) to varchar (or char).  Doing so will cut the size used by the data in half, from 2 bytes per character (+ 2 bytes of overhead for varchar) to only 1 byte per character.  However, you will lose the ability to store Unicode characters, such as those used by many non-English alphabets.  If the tables are storing user-input, and your application is or might one day be used internationally, its likely that using Unicode for your characters is a good thing.  However, if instead the data is being generated by your application itself or your development team (such as lookup data), and you can be certain that Unicode character sets are not required, then switching such columns to varchar/char can be an easy improvement to make. Avoid Premature Optimization If you are working with a lookup table that has a small number of rows, and is only ever referenced in the application by its numeric ID column, then you wont see any benefit to using varchar vs. nvarchar.  More generally, for small tables, you wont see any significant benefit.  Thus, if you have a general policy in place to use nvarchar/nchar because it offers more flexibility, do not take this post as a recommendation to go against this policy anywhere you can.  You really only want to act on measurable evidence that suggests that using Unicode is resulting in a problem, and that you wont lose anything by switching to varchar/char. Obviously the main reason to make this change is to reduce the amount of space required by each row.  This in turn affects how many rows SQL Server can page through at a time, and can also impact index size and how much disk I/O is required to respond to queries, etc.  If for example you have a table with 100 million records in it and this table has a column of type nchar(5), this column will use 5 * 2 = 10 bytes per row, and with 100M rows that works out to 10 bytes * 100 million = 1000 MBytes or 1GB.  If it turns out that this column only ever stores ASCII characters, then changing it to char(5) would reduce this to 5*1 = 5 bytes per row, and only 500MB.  Of course, if it turns out that it only ever stores the values true and false then you could go further and replace it with a bit data type which uses only 1 byte per row (100MB  total). Detecting Whether Unicode Is In Use So by now you think that you have a problem and that it might be alleviated by switching some columns from nvarchar/nchar to varchar/char but youre not sure whether youre currently using Unicode in these columns.  By definition, you should only be thinking about this for a column that has a lot of rows in it, since the benefits just arent there for a small table, so you cant just eyeball it and look for any non-ASCII characters.  Instead, you need a query.  Its actually very simple: SELECT DISTINCT(CategoryName)FROM CategoriesWHERE CategoryName <> CONVERT(varchar, CategoryName) Summary Gregg Stark for the tip. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Why do people say that Ruby is slow?

    - by stephen murdoch
    I like Ruby on Rails and I use it for all my web development projects. A few years ago there was a lot of talk about Rails being a memory hog and about how it didn't scale very well but these suggestions were put to bed by Gregg Pollack here. Lately though, I've been hearing people saying that Ruby itself is slow. Why is Ruby considered slow? I do not find Ruby to be slow but then again, I'm just using it to make simple CRUD apps and company blogs. What sort of projects would I need to be doing before I find Ruby becoming slow? Or is this slowness just something that affects all programming languages? What are your options as a Ruby programmer if you want to deal with this "slowness"? Which version of Ruby would best suit an application like Stack Overflow where speed is critical and traffic is intense? The questions are subjective, and I realise that architectural setup (EC2 vs standalone servers etc) makes a big difference but I'd like to hear what people think about Ruby being slow. Finally, I can't find much news on Ruby 2.0 - I take it we're a good few years away from that then?

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  • Solaris 11 Launch Blog Carnival Roundup

    - by constant
    Solaris 11 is here! And together with the official launch activities, a lot of Oracle and non-Oracle bloggers contributed helpful and informative blog articles to help your datacenter go to eleven. Here are some notable blog postings, sorted by category for your Solaris 11 blog-reading pleasure: Getting Started/Overview A lot of people speculated that the official launch of Solaris 11 would be on 11/11 (whatever way you want to turn it), but it actually happened two days earlier. Larry Wake himself offers 11 Reasons Why Oracle Solaris 11 11/11 Isn't Being Released on 11/11/11. Then, Larry goes on with a summary: Oracle Solaris 11: The First Cloud OS gives you a short and sweet rundown of what the major new features of Solaris 11 are. Jeff Victor has his own list of What's New in Oracle Solaris 11. A popular Solaris 11 meme is to write a blog post about 11 favourite features: Jim Laurent's 11 Reasons to Love Solaris 11, Darren Moffat's 11 Favourite Solaris 11 Features, Mike Gerdt's 11 of My Favourite Things! are just three examples of "11 Favourite Things..." type blog posts, I'm sure many more will follow... More official overview content for Solaris 11 is available from the Oracle Tech Network Solaris 11 Portal. Also, check out Rick Ramsey's blog post Solaris 11 Resources for System Administrators on the OTN Blog and his secret 5 Commands That Make Solaris Administration Easier post from the OTN Garage. (Automatic) Installation and the Image Packaging System (IPS) The brand new Image Packaging System (IPS) and the Automatic Installer (IPS), together with numerous other install/packaging/boot/patching features are among the most significant improvements in Solaris 11. But before installing, you may wonder whether Solaris 11 will support your particular set of hardware devices. Again, the OTN Garage comes to the rescue with Rick Ramsey's post How to Find Out Which Devices Are Supported By Solaris 11. Included is a useful guide to all the first steps to get your Solaris 11 system up and running. Tim Foster had a whole handful of blog posts lined up for the launch, teaching you everything you need to know about IPS but didn't dare to ask: The IPS System Repository, IPS Self-assembly - Part 1: Overlays and Part 2: Multiple Packages Delivering Configuration. Watch out for more IPS posts from Tim! If installing packages or upgrading your system from the net makes you uneasy, then you're not alone: Jim Laurent will tech you how Building a Solaris 11 Repository Without Network Connection will make your life easier. Many of you have already peeked into the future by installing Solaris 11 Express. If you're now wondering whether you can upgrade or whether a fresh install is necessary, then check out Alan Hargreaves's post Upgrading Solaris 11 Express b151a with support to Solaris 11. The trick is in upgrading your pkg(1M) first. Networking One of the first things to do after installing Solaris 11 (or any operating system for that matter), is to set it up for networking. Solaris 11 comes with the brand new "Network Auto-Magic" feature which can figure out everything by itself. For those cases where you want to exercise a little more control, Solaris 11 left a few people scratching their heads. Fortunately, Tschokko wrote up this cool blog post: Solaris 11 manual IPv4 & IPv6 configuration right after the launch ceremony. Thanks, Tschokko! And Milek points out a long awaited networking feature in Solaris 11 called Solaris 11 - hostmodel, which I know for a fact that many customers have looked forward to: How to "bind" a Solaris 11 system to a specific gateway for specific IP address it is using. Steffen Weiberle teaches us how to tune the Solaris 11 networking stack the proper way: ipadm(1M). No more fiddling with ndd(1M)! Check out his tutorial on Solaris 11 Network Tunables. And if you want to get even deeper into the networking stack, there's nothing better than DTrace. Alan Maguire teaches you in: DTracing TCP Congestion Control how to probe deeply into the Solaris 11 TCP/IP stack, the TCP congestion control part in particular. Don't miss his other DTrace and TCP related blog posts! DTrace And there we are: DTrace, the king of all observability tools. Long time DTrace veteran and co-author of The DTrace book*, Brendan Gregg blogged about Solaris 11 DTrace syscall provider changes. BTW, after you install Solaris 11, check out the DTrace toolkit which is installed by default in /usr/dtrace/DTT. It is chock full of handy DTrace scripts, many of which contributed by Brendan himself! Security Another big theme in Solaris 11, and one that is crucial for the success of any operating system in the Cloud is Security. Here are some notable posts in this category: Darren Moffat starts by showing us how to completely get rid of root: Completely Disabling Root Logins on Solaris 11. With no root user, there's one major entry point less to worry about. But that's only the start. In Immutable Zones on Encrypted ZFS, Darren shows us how to double the security of your services: First by locking them into the new Immutable Zones feature, then by encrypting their data using the new ZFS encryption feature. And if you're still missing sudo from your Linux days, Darren again has a solution: Password (PAM) caching for Solaris su - "a la sudo". If you're wondering how much compute power all this encryption will cost you, you're in luck: The Solaris X86 AESNI OpenSSL Engine will make sure you'll use your Intel's embedded crypto support to its fullest. And if you own a brand new SPARC T4 machine you're even luckier: It comes with its own SPARC T4 OpenSSL Engine. Dan Anderson's posts show how there really is now excuse not to encrypt any more... Developers Solaris 11 has a lot to offer to developers as well. Ali Bahrami has a series of blog posts that cover diverse developer topics: elffile: ELF Specific File Identification Utility, Using Stub Objects and The Stub Proto: Not Just For Stub Objects Anymore to name a few. BTW, if you're a developer and want to shape the future of Solaris 11, then Vijay Tatkar has a hint for you: Oracle (Sun Systems Group) is hiring! Desktop and Graphics Yes, Solaris 11 is a 100% server OS, but it can also offer a decent desktop environment, especially if you are a developer. Alan Coopersmith starts by discussing S11 X11: ye olde window system in today's new operating system, then Calum Benson shows us around What's new on the Solaris 11 Desktop. Even accessibility is a first-class citizen in the Solaris 11 user interface. Peter Korn celebrates: Accessible Oracle Solaris 11 - released! Performance Gone are the days of "Slowaris", when Solaris was among the few OSes that "did the right thing" while others cut corners just to win benchmarks. Today, Solaris continues doing the right thing, and it delivers the right performance at the same time. Need proof? Check out Brian's BestPerf blog with continuous updates from the benchmarking lab, including Recent Benchmarks Using Oracle Solaris 11! Send Me More Solaris 11 Launch Articles! These are just a few of the more interesting blog articles that came out around the Solaris 11 launch, I'm sure there are many more! Feel free to post a comment below if you find a particularly interesting blog post that hasn't been listed so far and share your enthusiasm for Solaris 11! *Affiliate link: Buy cool stuff and support this blog at no extra cost. We both win! var flattr_uid = '26528'; var flattr_tle = 'Solaris 11 Launch Blog Carnival Roundup'; var flattr_dsc = '<strong>Solaris 11 is here!</strong>And together with the official launch activities, a lot of Oracle and non-Oracle bloggers contributed helpful and informative blog articles to help your datacenter <a href="http://en.wikipedia.org/wiki/Up_to_eleven">go to eleven</a>.Here are some notable blog postings, sorted by category for your Solaris 11 blog-reading pleasure:'; var flattr_tag = 'blogging,digest,Oracle,Solaris,solaris,solaris 11'; var flattr_cat = 'text'; var flattr_url = 'http://constantin.glez.de/blog/2011/11/solaris-11-launch-blog-carnival-roundup'; var flattr_lng = 'en_GB'

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  • Tracing Silex from PHP to the OS with DTrace

    - by cj
    In this blog post I show the full stack tracing of Brendan Gregg's php_syscolors.d script in the DTrace Toolkit. The Toolkit contains a dozen very useful PHP DTrace scripts and many more scripts for other languages and the OS. For this example, I'll trace the PHP micro framework Silex, which was the topic of the second of two talks by Dustin Whittle at a recent SF PHP Meetup. His slides are at Silex: From Micro to Full Stack. Installing DTrace and PHP The php_syscolors.d script uses some static PHP probes and some kernel probes. For Oracle Linux I discussed installing DTrace and PHP in DTrace PHP Using Oracle Linux 'playground' Pre-Built Packages. On other platforms with DTrace support, follow your standard procedures to enable DTrace and load the correct providers. The sdt and systrace providers are required in addition to fasttrap. On Oracle Linux, I loaded the DTrace modules like: # modprobe fasttrap # modprobe sdt # modprobe systrace # chmod 666 /dev/dtrace/helper Installing the DTrace Toolkit I download DTraceToolkit-0.99.tar.gz and extracted it: $ tar -zxf DTraceToolkit-0.99.tar.gz The PHP scripts are in the Php directory and examples in the Examples directory. Installing Silex I downloaded the "fat" Silex .tgz file from the download page and extracted it: $ tar -zxf silex_fat.tgz I changed the demonstration silex/web/index.php so I could use the PHP development web server: <?php // web/index.php $filename = __DIR__.preg_replace('#(\?.*)$#', '', $_SERVER['REQUEST_URI']); if (php_sapi_name() === 'cli-server' && is_file($filename)) { return false; } require_once __DIR__.'/../vendor/autoload.php'; $app = new Silex\Application(); //$app['debug'] = true; $app->get('/hello', function() { return 'Hello!'; }); $app->run(); ?> Running DTrace The php_syscolors.d script uses the -Z option to dtrace, so it can be started before PHP, i.e. when there are zero of the requested probes available to be traced. I ran DTrace like: # cd DTraceToolkit-0.99/Php # ./php_syscolors.d Next, I started the PHP developer web server in a second terminal: $ cd silex $ php -S localhost:8080 -t web web/index.php At this point, the web server is idle, waiting for requests. DTrace is idle, waiting for the probes in php_syscolors.d to be fired, at which time the action associated with each probe will run. I then loaded the demonstration page in a browser: http://localhost:8080/hello When the request was fulfilled and the simple output of "Hello" was displayed, I ^C'd php and dtrace in their terminals to stop them. DTrace output over a thousand lines long had been generated. Here is one snippet from when run() was invoked: C PID/TID DELTA(us) FILE:LINE TYPE -- NAME ... 1 4765/4765 21 Application.php:487 func -> run 1 4765/4765 29 ClassLoader.php:182 func -> loadClass 1 4765/4765 17 ClassLoader.php:198 func -> findFile 1 4765/4765 31 ":- syscall -> access 1 4765/4765 26 ":- syscall <- access 1 4765/4765 16 ClassLoader.php:198 func <- findFile 1 4765/4765 25 ":- syscall -> newlstat 1 4765/4765 15 ":- syscall <- newlstat 1 4765/4765 13 ":- syscall -> newlstat 1 4765/4765 13 ":- syscall <- newlstat 1 4765/4765 22 ":- syscall -> newlstat 1 4765/4765 14 ":- syscall <- newlstat 1 4765/4765 15 ":- syscall -> newlstat 1 4765/4765 60 ":- syscall <- newlstat 1 4765/4765 13 ":- syscall -> newlstat 1 4765/4765 13 ":- syscall <- newlstat 1 4765/4765 20 ":- syscall -> open 1 4765/4765 16 ":- syscall <- open 1 4765/4765 26 ":- syscall -> newfstat 1 4765/4765 12 ":- syscall <- newfstat 1 4765/4765 17 ":- syscall -> newfstat 1 4765/4765 12 ":- syscall <- newfstat 1 4765/4765 12 ":- syscall -> newfstat 1 4765/4765 12 ":- syscall <- newfstat 1 4765/4765 20 ":- syscall -> mmap 1 4765/4765 14 ":- syscall <- mmap 1 4765/4765 3201 ":- syscall -> mmap 1 4765/4765 27 ":- syscall <- mmap 1 4765/4765 1233 ":- syscall -> munmap 1 4765/4765 53 ":- syscall <- munmap 1 4765/4765 15 ":- syscall -> close 1 4765/4765 13 ":- syscall <- close 1 4765/4765 34 Request.php:32 func -> main 1 4765/4765 22 Request.php:32 func <- main 1 4765/4765 31 ClassLoader.php:182 func <- loadClass 1 4765/4765 33 Request.php:249 func -> createFromGlobals 1 4765/4765 29 Request.php:198 func -> __construct 1 4765/4765 24 Request.php:218 func -> initialize 1 4765/4765 26 ClassLoader.php:182 func -> loadClass 1 4765/4765 89 ClassLoader.php:198 func -> findFile 1 4765/4765 43 ":- syscall -> access ... The output shows PHP functions being called and returning (and where they are located) and which system calls the PHP functions in turn invoked. The time each line took from the previous one is displayed in the third column. The first column is the CPU number. In this example, the process was always on CPU 1 so the output is naturally ordered without requiring post-processing, or the D script requiring to be modified to display a time stamp. On a terminal, the output of php_syscolors.d is color-coded according to whether each function is a PHP or system one, hence the file name. Summary With one tool, I was able to trace the interaction of a user application with the operating system. I was able to do this to an application running "live" in a web context. The DTrace Toolkit provides a very handy repository of DTrace information. Even though the PHP scripts were created in the time frame of the original PHP DTrace PECL extension, which only had PHP function entry and return probes, the scripts provide core examples for custom investigation and resolution scripts. You can easily adapt the ideas and and create scripts using the other PHP static probes, which are listed in the PHP Manual. Because DTrace is "always on", you can take advantage of it to resolve development questions or fix production situations.

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  • top tweets WebLogic Partner Community – June 2012

    - by JuergenKress
    Send your tweets @wlscommunity #WebLogicCommunity and follow us at http://twitter.com/wlscommunity OTNArchBeat? Free Virtual Developer Day: Oracle ADF and Oracle Fusion Middleware Development http://bit.ly/MxuNAg AMIS, Oracle & Java? Checklist veearts nu ook op iPad. @amis_services Mobile integratie met Oracle Fusion Middleware http://dld.bz/buwsM #OSB #SOA WhitehorsesWhiteblog: Troubleshoot JVM crashes of Weblogic: CompilerThread (http://bit.ly/KcGzZK) Jon petter hjulstad E-vita is now Apps Grid Specialized! ODTUG Fusion Middleware Sessions RT @OTNArchBeat: ODTUG Kscope12 - June 24-28 - San Antonio, TX http://bit.ly/LlWkNV OTNArchBeat? Free Event: Modern #Java Development, in/outside the Enterprise - May 30 - Redwood Shores, CA http://bit.ly/LfB79a ADF Community DE? Oracle Advanced ADF 11g Partner Workshop Düsseldorf /Germany (english) June 26-29, click here to see Nicolas Lorain? Best Practices for #JavaFX 2 Enterprise Applications (Part Two) http://buff.ly/Lk1DBn by Jim Weaver shay shmeltzer? #Oracle Developers in #Israel - don't miss the free #ADF workshop July 2nd - get hands-on with Oracle ADF -here OTNArchBeat? Java at JAXconf | Tori Wieldt http://bit.ly/LdoLS2 Anand Akela? #Oracle Customers and Partners – Get your free pass to @CloudExpo in New York, June 11 to 14, http://goo.gl/RpYFT <- Stop by booth #511 OracleSupport_WLS? Did you know that since 3/15/12 #WebLogic Server 12.1.1.0 is certified for production with JDK 7? http://bit.ly/IYJE0L Sharat? Highly useful #JavaFX best practices blog by @JavaFXpert More details here ADF EMG How to set up a productive ADF Dev Env - discussion started by @baigsorcl. Click here to Read and comment. OracleSupport_WLS Upcoming #webcast: Diagnosing #weblogic performance issues through #java thread dumps http://bit.ly/M4O9qF My Oracle Support? 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Whish you success! #WebLogicCommunity Sabine Leitner ADF Einsteigerworkshops je 2 Tage im Juni in HAM, BLN, HANN #Oracle #WLS http://bit.ly/LcOIzB @OracleWebLogic @OracleAppGrid@soacommunity Andreas Koop new post Java Heap Monitor in JDeveloper http://bit.ly/LgSk85 Sabine Leitner? #Oracle Kundentag mit Vorträgen von Sparkasse, Schufa, LBBW, Allianz über FMW & Exa Lösungen! 21.06. FRA http://bit.ly/JtwE3v @wlscommunity NetBeans Team RT @chadlung: Installing and configuring #NetBeans 7.1.2 and the #Java JDK 1.7 on OS X: http://www.giantflyingsaucer.com/blog/p=3760 #osx WebLogic Community Happy New Year #WeblogicCommunity thanks for the business! Time for a drink http://pic.twitter.com/K34KFbvH WebLogic Community UK OUG call for papers&ndash;your middleware success! http://wp.me/p1LMIb-gU WebLogic Community? Middleware Oracle Excellence Awards 2012 - HAPPY NEW YEAR! http://wp.me/p1LMIb-h6 Oracle WebLogic? RT @wlscommunity: WebLogic World Record Two Processor Result with SPECjEnterprise2010 Benchmark Click here to read #weblogic #sunfire #li Marc? Relocate wlst script for all the logfiles in your domain @wlscommunity, http://tinyurl.com/btbjcco WebLogic Community WebLogic World Record Two Processor Result with SPECjEnterprise2010 Benchmark Click here #WebLogicCommunity #weblogic #sunfire Oracle WebLogic MIss a WebLogic Devcast webinar? Catch any of the replays in the series on-demand! #WebLogic #JavaEE #coherence http://bit.ly/LNGa4p JDeveloper & ADF? Bean DataControl - Edit table records http://dlvr.it/1ZWqCx Justin Kestelyn? Contents of "Virtual Developer Day: Java SE 7 and JavaFX 2.0" are now avail on demand; no reg http://tinyurl.com/78nxnyo Frank Nimphius? Preparing 12c new features for DOAG 2012 Development - June 14th in Bonn (http://development.doag.org) WebLogic Community? Middleware Oracle Excellence Awards 2012&ndash;HAPPY NEW YEAR! http://wp.me/p1LMIb-he JDeveloper & ADF Placeholder Watermarks with ADF 11.1.2 http://dlvr.it/1ZWDc9 Oracle ACE Program? May edition #ACE newsletter now available online. http://bit.ly/LKA2de chriscmuir New blog post: Which JDeveloper is right for me? http://bit.ly/J8sj9e GlassFish? Transactional Interceptors in Java EE 7 - Request for feedback: Linda described how EJB's container-managed tr http://bit.ly/KKuGNJ OracleEnterpriseMgr Oracle Application Testing Suite 12.1 Debuts at StarEast 2012 http://ow.ly/aXcv8 #em12c JAX London First set of speaker session announced for #JAXLondon see: http://bit.ly/L0HSME OTNArchBeat? Oracle Cloud Conference: dates and locations worldwide http://bit.ly/JgNeID NetBeans Team? Video: Create and debug a TestNG test class in #NetBeans IDE: http://ow.ly/b7NEW NetBeans Team #NetBeans tip: Code Template for #Kohana #PHP Framework: http://ow.ly/aWIvY Robin? 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UK OUG call for papersyour middleware success! http://ow.ly/1jNs49 Nicolas Lorain? Java tip: Deploying #JavaFX apps to multiple environments - JavaWorld http://buff.ly/KDADvu Adam Bien? Java EE and How to Specify The Unconventional With Convention Over Configuration [Free Article]: The free http://bit.ly/JEUkUf Owen Hughes and team?#Oracle #Exalogic #Performance: What? How? Why? Click here GlassFish? SecuritEE in the Cloud: Java EE 7 and the Cloud theme continue to move full steam ahead. In a PaaS environment http://bit.ly/K2RPte JDeveloper & ADF? How to Align Managed Bean Scope and Bean Data Control in Oracle ADF http://dlvr.it/1dngxQ Andrejus Baranovskis Missing New Feature in JDev (11.1.2.2.0) - ADF Methods Security http://fb.me/1jQM1enls OracleSupport_WLS? Tutorial on managing #HTTP Sessions in a #Weblogic #Cluster http://bit.ly/JshESe Oracle WebLogic? ZeroTurnaround developer report: #Spring keeps getting heavier, and #Java EE keeps getting lighter http://bit.ly/JDmKy2 JDeveloper & ADF? How to Search in Views - Part 4 || Oracle ADF http://dlvr.it/1dpDjZ WebLogic Community Java Message Service with Java and Spring Framework on Oracle WebLogic; Webcast May 15th 2012 http://wp.me/p1LMIb-gS Andreas Koop? new post ADF Bug or Feature? Non-Breaking Space outside required icon style http://bit.ly/KDZnUo Oracle WebLogic? Don't miss this month's WebLogic DevCast: WebLogic JMS and Spring JMS http://bit.ly/J6g2ST Tuesday May 15th 10:00am PT JDeveloper & ADF How To Disable SELECT COUNT Execution for ADF Table Rendering http://dlvr.it/1dqKH6 OracleSupport_WLS? #SSL and security has its own Information Center, http://bit.ly/LP8Vil for troubleshooting, install, config and more NetBeans Team? Featured #NetBeans plugin is @Codename_One for creating native apps for major mobile platforms: http://plugins.netbeans.org/ JDeveloper & ADF? Using JDeveloper HTTP Analyser to intercept/forward requests http://dlvr.it/1Yzl4J Nicolas Lorain? Create native looks for JavaFX applications: JavaFX-CSS-Themes · http://buff.ly/M0jel0 by Gregg Setzer Devoxx? Want to make the world a better place? Then get involved in Random Hacks of Kindness on June 2 - 3 in Belgium @ http://www.rhok.be #RHoK WebLogic Community top tweets WebLogic Partner Community – May 2012 Click here #WebLogicCommunity Michel Schildmeijer Oracle Traffic Director 11g http://lnkd.in/-mm3Vy Andrejus Baranovskis? Proactively Monitoring JDeveloper 11g IDE Heap Memory http://fb.me/16YZErPrx Arun Gupta? 80+ attendees building a #javaee6 application using NetBeans/WebLogic at Java Day, Istanbul fun times! http://pic.twitter.com/odY19daW A. Chatziantoniou? Just registered for the Oracle FMW Summer Camp in Lisbon. 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Join Oracle in #Joburg on May 21 for OTN Developer Day - sessions on #Java #JavaEE 6/7 and much more! http://bit.ly/IENwnD WebLogic Community? Sending out invitations to our advanced Fusion Middleware Summer Camps! Want to learn more register for the community Ruth Collett? Join @ArunGupta in Istanbul this Monday to hear the latest on #JavaEE 6/7 http://bit.ly/Je63cc GlassFish? NetBeans 7.2 Beta - Built for Speed, Deploy Apps to Oracle Cloud: NetBeans 7.2 Beta is now available. The http://bit.ly/LxMMTK Lucas Jellema My latest SlideShare upload : Java ain't scary - introducing Java to PL/SQ. here via @slideshare JDeveloper & ADF? #Developer #free#ADF training in #Scotland - June 13. More information: http://bit.ly/LbPLlf AMIS, Oracle & Java? 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