So it happened again: the 360 which I was using since the last RRoD in 2007 died today. Just when you want to play a game in months it’s dying… damn!
the 3rd 360 died today
der letzte Flug des Space Shuttle Endeavour
Am kommenden Freitag soll das Space Shuttle Endeavour zum letzen Mal und ein Space Shuttle zum vorletzten Mal abheben. Da will man dabei sein :-)
Ich habe glücklicherweise gerade die Herren (und Damen?) von SpaceLiveCast entdeckt. Offenbar machen die schon eine ganze Weile Livestreams zu den verschiedenen Raumfahrt-Events.
P.S.: Wenn ich einen Wunsch frei hätte, wäre das, dass die Seite einen Video Podcast Feed anbietet….(wird Hilfe benötigt?)
Source 1: http://spacelivecast.de/
Source 2: http://www.raumfahrer.net
Source 3: http://spacelivecast.de/2011/04/29-04-ab-1900-uhr-sts-134-letzter-endeavour-flug/
configuring the nano editor to my needs…
Configuring your favourite Editor on OSX (or Linux, or anywhere else) is important – since nano is my editor of choice I wanted to use it’s syntax highlighting capabilities. Easy as pie as it turned out:
I started with a .nanorc file from this guy and modified it to recognize some of my frequent file-types (like .cs files).
You can download my nanorc.tar – just extract it and put it into your user home directory.
Source 1: http://talk.maemo.org/showthread.php?t=68421
Source 2: http://www.nano-editor.org/dist/v2.2/nano.html#Nanorc-Files
Source 3: nanorc.tar
type to win
In the dusk of Flash it’s nice to see that HTML 5 and JavaScript are here to bring small and fun games to our browsers.
“Z-Type was specifically created for Mozilla’s Game On. I immediately wanted to participate in the competition when I first heard of it, but the deadline seemed so far away that I didn’t bother to begin working on a game back then. Fast forward to this tweet announcing that the deadline was only one week away – it took me by surprise. I still hadn’t even began working on anything. The thought of just submitting my earlier game Biolab Disaster crossed my mind but was immediately dismissed again.”
Great sound, great graphics and in the higher levels quite difficult.
Source 1: http://www.phoboslab.org/ztype/
Photosynth now mobile…
It’s been some months years since the once Microsoft Research Project got public and Microsoft started offering it’s great Photosynth service to the public.
I’ve been using the Microsoft panoramic and Photosynth tools for years now and I tend to say that they are the best tools one can get to create fast, easy and high-quality panoramic images.
There is photosynth.net to store all those panoramic pictures like this one from 2008:
The photosynth technology itself contains several other interesting technologies like SeaDragon which allows high quality image zooming on current internet connection speeds.
This awesome technology is as of now available on the iPhone (3GS and upwards) and it’s better than all the other panoramic tools I’ve used on a phone.
Source 1: Photosynth articles from the past
Source 2: Photosynth in Wikipedia
Source 3: Photosynth on iPhone App Store
Achievement Unlocked: Scaring the hell out of people
Oh boy, it seems that Apple just screwed up big time when it comes to data privacy. Obviously everytime someone attaches an iOS device like the iPhone to a PC or Mac and it does a backup run this backup includes the location data of that iPhone of the last several months. Impressive logging on the one hand and a shame that they did not talk about that in public upfront on the other hand.
There’s a great tool available on GitHub which uses OpenStreetMap to visualize the logged data – it creates a quite impressive graphical representation of where I was the last 6 months…
das außer-Haus Backup
Irgendwie werden es auch privat immer immer mehr Daten – mit immer zunehmender Geschwindigkeit… Alle paar Jahre tausche ich bei uns im Haushalt die Festplatten/Speicherlösung komplett aus – was zwar immer wieder mal eine Investitions bedeutet, gleichzeitig aber auch dafür sorgt dass Daten nicht irgendwelchen ungünstigen mechanischen, chemischen oder magnetischen Effekten zum Opfer fallen… Ja so etwa alle zwei Jahre wird alles einmal umkopiert… Das dauerte beim letzten Mal zwar gut eine Woche, aber naja so ist das eben…
Aus vielerlei Grund haben wir auch für einen Haushalt recht viel Bedarf an Speicherplatz – teilweise wohl auch weil meine Frau Photographin ist – aber ich als “werf-nix-weg”-Typ werd da auch einen guten Anteil dran haben…
Herr über alle unsere Festplatten (kein Witz, die Rechner bei uns haben ihre Festplatten eigentlich nur um booten zu können) ist seit jeher ein einzelner Rechner welcher ebenso alle paar Jahre komplett ausgetauscht wird. Dieser Rechner verwaltet im Moment zwischen 12-15 Festplatten verschiedener Größe – Hauptarbeit wird zur Zeit durch drei separate (gewachsene) RAID-5 Volumes erledigt…
Nebenbei: Nein ich kann/will da kein RAID-6 fahren ohne entweder Linux zu verwenden (was aus verschiedenen Gründen nicht geht) oder einen Hardware-Controller zu verwenden, was nach einschlägigen Erfahrungen querbeet durch alle möglichen Hardware RAID Controller ausfällt.
Dem ganzen Festplattenstapel liegt dann ein Standard-PC mit Windows Server 2008 zugrunde – zum einen weil ich so eine Lizenz noch herumliegen hatte und zum anderen weil ich in über 10 Jahren File-Server Erfahrungen sammeln noch nie auch nur ein Byte unter Windows verloren habe. Zusätzlich habe ich einen riesigen Haufen Software welche Windows-only ist ud sozusagen ständig laufen muss um Sinn zu machen (Mail-Server Puffer, Newsserver Mirror, Musik und Video Streaming Server, Medienbibliothek, Videorekorder,…
Diese drei großen RAID Volumes schnappt sich dann Truecrypt und ver- und entschlüsselt zuverlässig vor sich hin – im Endeffekt gibt es kein Byte Daten im Haushalt welches nicht verschlüsselt wäre. Gut für uns.
So ein RAID verhindert nun ja aber nicht dass dennoch oben genannte ungünstige Effekte eintreten und man mal eine oder mehrere Defekte zu beklagen hat. Im Normalfall tauscht man die defekte Festplatte, resynct das RAID und alles funktioniert weiter ohne dass man Daten verloren hätte. Allerdings ist das ja kein Backup. Das ist nur eine erste Absicherung gegen mögliche Defekte.
Getreu folgendem kurzen Musikstück:
… ist ein RAID eben kein Backup. Backups erledigt bei mir eine Sammlung von Scripten welche jeweils in festen Abständen Vollbackups und Differenz-Backups erstellt. Da kommt dann ein Haufen 1 Gbyte großer Dateien raus welche dann anschliessend per RSync in mühevoller (und dank funktionierendem QoS unbemerkt) Arbeit außer Haus geschafft werden. Die Komplett-Backups dauern aufgrund der großen Menge einfach ewig lang und lassen sich recht einfach dadurch beschleunigen dass man sozusagen das Backup physisch auf einer externen Festplatte zum Server trägt…die Differenz-Backups sind dann meist immer recht flott durchgelaufen. Speicherplatz im Internet wird ja auch immer billiger und so haben wir auch immer ein gutes Off-Site Backup unserer Daten…
Für Windows gibt es neben den üblichen Cygwin Ports von rsync auch eine gute GUI Version namens DeltaCopy. Das Ding kopiert zuverlässig und auch wenn mal der DSL Router rebootet oder hängt nimmt er selbständig die Kopierarbeit wieder auf sobald Netz wieder verfügbar ist.
Damit DeltaCopy seine Daten irgendwo abladen kann wird auf der Gegenstelle natürlich ein rsync Server vorrausgesetzt. Die Konfiguration eines solchen ist nicht sonderlich kompliziert – im Grunde muss man nur rsync installieren und die rsyncd.conf Datei anpassen. Zusätzlich dazu muss man eine Konfigurationsdatei anlegen in welchem nach dem Schema “Benutzername:Passwort” entsprechend die Nutzeraccounts angegeben werden – das wars eigentlich schon. Rsync ist sehr robust und vor allem auch gut für geringere Bandbreiten geeignet. Wenn sich an einer Datei nur wenige Bytes geändert haben müssen auch nur die geänderten Bytes übertragen werden.
Source 1: http://www.speichergurke.de
Source 2: http://www.aboutmyip.com/AboutMyXApp/DeltaCopy.jsp
Source 3: http://de.wikipedia.org/wiki/Rsync
Shairport – someone reversed an AirPort Express
Low Latency Network Audio was a dream for the past years (see an article of 2005 and 2008) and with AirPlay it’s finally there.
I am using the Apple AirPlay technology for several years now… after it got implemented into iOS it’s just fantastic to have the option to have whatever sound source I want to playing loud and clear in any room I want to…
Okay it’s not quite as sophisticated as the sonos solution regarding the control of multiple music sources in multiple rooms but it get’s the job done in an apartment.
So back to the topic: Apple integrated the AirPlay technology into their wireless base station “AirPort Express”. Basically AirPlay is a piece of software which receives an encrypted audio stream over the network and outputs the stream to the SPDIF or audio jack.
Back in 2005 there already was an emulator of this protocol called “Fairport” but Apple decided to encrypt the AirPlay traffic. This led to the problem that the encryption key was unkown because it’s baked into the AirPort Express firmware. And this is where the good news start:
“My girlfriend moved house, and her Airport Express no longer made it with her wireless access point. I figured it’d be easy to find an ApEx emulator – there are several open source apps out there to play to them. However, I was disappointed to find that Apple used a public-key crypto scheme, and there’s a private key hiding inside the ApEx. So I took it apart (I still have scars from opening the glued case!), dumped the ROM, and reverse engineered the keys out of it.”
So to keep things short: Someone got an AirPort Express, dumped the firmware, extracted the AirPlay encryption keys and wrote an emulator of the AirPlay protocol which uses the key. Voilá!
ShairPort is available in source code on the site of the guy and obviously it’s unsure if Apple will react by changing the encryption key in the future. But for the time being it works as advertised:
I took one of my computers and followed the instructions to update perl, install Macports and then run ShairPort. So when ShairPort is run it looks not as appealing as expected:
Notably it uses IPv6 to communicate between iTunes and ShairPort… Oh I almost forgot to show how it looks in iTunes:
On another side note: It works on Linux, Windows and Mac OS X :-)
Source 1: Apple AirPlay
Source 2: Sonos
Source 3: Apple AirPort Express
Source 4: ShairPort
modifying OS X terminal to make it more useable…
Using OS X for the daily work is getting easier every day. And most of the time I am doing work using the Terminal.app.
So there are some configuration changes necessary to make it even more useable…
- Edit /etc/bashrc and add some alias and color definitions
- alias ll=”ls -hfG”
- alias la=”ls -ahfG”
- export LSCOLORS=fxfxcxdxbxegedabagacad
- custom color schemes can be defined using the lscolors tool
- install screen (using MacPorts for example) and setup a ~/.screenrc
Source 1: http://geoff.greer.fm/lscolors/
Source 2: http://www.macports.org/
Source 3: ScreenRC.tar
hacs is getting the first UI elements
I’ve worked on my little holiday project for a while now and it’s making great progress. Since logging is working for almost two weeks now I got some data that should be visualized. One main goal of the project is to have a great UI to browse the sensor data.
So almost two weeks into the project I’ve started to learn JavaScript 
The logging server now included an internal http server which serves some pages and RESTful services already. One of those services is the sensor data service which can be asked to output JSON formatted sensor data. If you take that data using jQuery and the flot jQuery plugin you’ll get something like that:
jQuery and flot based hacs UI
Source: http://github.com/bietiekay/hacs
h.a.c.s. milestone 0–in need of a backup tool
This EzControl XS1 device is a complex thing. And currently I am playing with more than 10 sensors and more than 10 actuators. Since poking around with such a device will most certainly lead to a condition where that configuration might get lost (like a power down for more than 30 minutes).
Therefore I was in need of a backup and restore tool. Because there isn’t one I had to write one myself. Here it is:
I can haz backup tool
My tool is available as opensource as part of the h.a.c.s. toolkit here. Enjoy!
Source 1: https://github.com/bietiekay/hacs/wiki/H.a.c.s.-toolkit
Source 2: http://github.com/bietiekay/hacs/
hacs hardware arrived
My holiday project is progressing: Today it was hardware delivery day!
So this is the hardware which is ready to be used:
- 1x EzControl XS1 controller
- 2x Temperature and Humidity sensor
- 8x Remote Power Switch
The EzControl XS1 is easy to use as far as I had the time to give it a try. After the network setup the XS1 offers a simple web interface and REST service. Built upon that REST service there is also a configuration application and a visualization application available. Those two applications are apparently built using the GWT framework.
![Bildschirmfoto-2010-12-13-um-21.24.0[2]](https://www.schrankmonster.de/wp-content/uploads/2010/12/Bildschirmfoto-2010-12-13-um-21.24.02.png "Bildschirmfoto-2010-12-13-um-21.24.0[2]")
I poked around a bit with the sensor and actor configuration screens and everything just worked. Those applications are great for the easy tasks. And for everything else hacs is what is going to be the tool of choice (to be written).
Source 1: http://www.ezcontrol.de
Source 2: http://github.com/bietiekay/hacs
Source 3: http://code.google.com/intl/de-DE/webtoolkit/overview.html
my little home automation project has a home
Hurray! One of those EzControl XS1 plus some sensors and actors is on the way to me. So I can finally start the little holiday project which will be called “HACS” (Home Automation Control Server).
The source code and documentation repository is up on GitHub as of now – you can access it here: https://github.com/bietiekay/hacs
If you are interested in working on that project – drop a comment.
great SIP Softphone for Linux and Windows
Thank goodness I can uninstall X-Lite! At sones we are using a SIP based telephony solution. And therefore some times a SIP softphone application is needed along with the obligatory hardware SIP telephones. Till today the only half-working software I knew for that task was X-Lite. But a colleague told me today that there is a better software which not even looks better but also works better than X-Lite.
It’s called “Ekiga” and it’s a GTK based open source application which can run on Windows and Linux. It looks clean and therefore nice and works great.
A special tip from me: Abort the Welcome Wizard because the only thing it does is registering you with ekigas’ own services.
Source: http://ekiga.org/
FFN-Switcher auf GitHub umgezogen
Es ist ja nun schonwieder einige Zeit her dass ich etwas über meine CB-Funk Software namens “FFN-Switcher” geschrieben habe. Nun ist es immerhin mal wieder soweit dass ich zeit gefunden habe mich mit einigen Bugfixes zu beschäftigen.
Gleichzeitig habe ich den Sourcecode von meinem privaten Subversion Repository auf den öffentlich zugänglichen GitHub Dienst hochgeladen. Dort kann der Sourcecode und was noch viel wichtiger ist: die Bug- und Wunschliste abgerufen und editiert werden.
http://github.com/bietiekay/ffn-switcher/
Natürlich gab es in der Zwischenzeit auch einige Bugfixes. Sodass mittlerweile Version 111 online steht und über die automatische Updatefunktion abgerufen werden kann.
TechEd Europe 2010–if you’re there we could meet!
After 5 years of TechEd abstinence it’s time to visit the conference again. This years TechEd will be held in Berlin which is quite nice since traveling will be reduced to a minimum. Since the session schedule is already available I’ve already filled my calendar for TechEd week.
Okay it’s impressive to see that so many interesting sessions can be held in one week’ – the bad thing is that I need do decide which to go and which to watch on video later.
On later notice: Since I will be there it would be a great opportunity to meet. Let me know if you are there and want to meet.
Mono 2.8 released!
Hurray! Finally the 2.8 version of Mono – the platform independent open source .NET framework is available as of today. I finally don’t have to recompile the trunk every now and then to get my bits running 
The Major Highlights according to the release notes are:
- C# 4.0
- Defaults to the 4.0 profile.
- New Garbage Collection engine
- New Frameworks:
- Parallel Framework
- System.XAML
- Threadpool exception behavior has changed to match .NET 2.0
- potentially a breaking change for a lot of Mono-only software
- See information below in the "Runtime" section.
- New Microsoft open sourced frameworks bundled:
- System.Dynamic
- Managed Extensibility Framework
- ASP.NET MVC 2
- System.Data.Services.Client (OData client framework)
- Performance
- Large performance improvements
- LLVM support has graduated to stable
- Use mono-llvm command to run your server loads with the LLVM backend
- Preview of the Generational Garbage Collector
- Version 2.0 of the embedding API
- WCF Routing
- .NET 4.0’s CodeContracts
- Removed the 1.1 profile and various deprecated libraries.
- OpenBSD support integrated
- ASP.NET 4.0
- Mono no longer depends on GLIB
Oh – they even linked my benchmark article.
winter 2011 hacking project: Home Automation
In the last 10+ years I was fiddling with different home automation concepts. Mostly without broad use cases because at that time no one seemed to be interested in having sensors and actors like crazy at home. In fact not that many people seem to care these days.
Having more and more hardware and software around us creates the use cases for a broader audience people like me have for 10+ years. Mainstream is a bitch for nerds 
That said I found a nice plastic box I want to use in a winter project. This plastic box is called “EzControl XS1”. It comes with several visible and “invisible” interfaces.
The visible and obvious ones are: power, 100 mbit ethernet, sd card slot. So it takes some power and does something on the network. The not so obvious and therefore “invisible” interfaces are the most interesting ones: the EzControl XS1 comes with the ability to send and receive on 433 Mhz and 868 Mhz.
Yes that are the ranges used by switchable and dimable power sockets, temperature sensor and AMR. The EzControl XS1 is not that cheap (coming at 189 Euros for the base version and additional 65 Euros per upgrade option). I do not own one yet so it’s the plan to acquire at least one and start of with dimable power sockets and add more sensors and actors on the way
One great feature of the EzControl XS1 is the embedded WebServer with which the users application (the one I want to write) can interact using a HTTP/JSON Protocol. Oh dear: Sensor data and Actor control using JSON. How great is that!
There is some example code available (even a proprietary iPad/iPhone client) but since I want to have some custom features I do not currently see to be available in software I am going to write a set of tools which will get and protocol sensor data and run scripts to controls actors. Oh it’ll be all available as open source (license not yet chosen).
P.S.: If some one from Rose+Herleth is reading this and wants to help – send me a test unit
Source 1: http://www.ezcontrol.de (in german though)
Source 2: http://en.wikipedia.org/wiki/Automatic_meter_reading
Source 3: http://www.ezcontrol.de/content/view/12/31/
Sintel:
After the last Open Movie Project “Bug Buck Bunny” – Sintel is the next short movie available for free download. Get it here.
“Sintel” is an independently produced short film, initiated by the Blender Foundation as a means to further improve and validate the free/open source 3D creation suite Blender. With initial funding provided by 1000s of donations via the internet community, it has again proven to be a viable development model for both open 3D technology as for independent animation film.
This 15 minute film has been realized in the studio of the Amsterdam Blender Institute, by an international team of artists and developers. In addition to that, several crucial technical and creative targets have been realized online, by developers and artists and teams all over the world.
“Sintel” commenced in May 2009, with producer Ton Roosendaal establishing a core team consisting of Colin Levy (director), David Revoy (concept art), Martin Lodewijk (story) and Jan Morgenstern (composer). In August script writer Esther Wouda was approached as a consultant, which resulted in her taking the responsibility for the entire screenplay. Esther then worked in close cooperation with Colin, David and Ton to deliver the final script early November. Meanwhile, Colin and David realized the first storyboards.
Based on a public call for artists – with over 150 respondents – the Durian artist team got established in July 2009. They first met in a pre-production week in Amsterdam in August, and all decided to join the project per October 1st. With the final movie budget still unknown, the target then still was to finish the film within 7 months, with a team of 6 artists and 2 developers. At that time the team still had the hopes to be able to realize the script in a 6-8 minute film.
In november, the Netherlands Film Fund approved on a substantial subsidy for Sintel, enough to extend the project to 10 months, with possible 1 or 2 extra artist seats in the final months. It was also by this time that breakdowns and animatic edits showed that the script had to be revised to become more compact, with a story structure using a flashback.
In the months after, Colin’s work on the Director’s Layout – 3D animatic shots – and final designs on the grand finale gradually made the movie longer, from 9 minutes in november, to almost 12 in May. Proper story telling, to absorb an audience with convincing characters and action just takes time!
With the highly anticipated extra funding from the Amsterdam Cinegrid – also funding a 4k resolution version – Ton finally could extend the team with 5 artists and a developer in March 2010. With 14 people the film then was completed for a first screening on July 18th in cinema Studio K in Amsterdam.
Three artists then stayed in Amsterdam working on final shot edits, lighting design, compositing, and on the impressive 2 minute film credits. The movie ended up with a total duration of 14m:48s, 888 seconds!
Watch it now:
Sintel
Source 1: Elephants Dream
Source 2: Big Buck Bunny
Source 3: Sintel
Source 3: Sintel Download
Windows Live Writer 2011 is available…
I am a huge fan of the Windows Live Writer. It’s been some years now since Microsoft made this free tool available to bloggers who want to blog on Windows. And in a bold move Microsoft announced the other week that they will be moving all Windows Live Spaces weblogs (a free weblog hosting service) to WordPress.
In an accompanying step they just released the 2011 version of the Windows Live Writer. Actually I think it’s a shame that there is no comparable tool on Mac OS X … which is quite unusual since those types of tools in that quality are more common on the apple platform.
The new Window Live Writer 2011 comes with the Ribbon UI already known from Office 2007 and 2010 (and 2011 now).
Source 1: http://wordpress.visitmix.com/
Source 2: http://explore.live.com/windows-live-essentials
visualize your source control
There’s a great tool available to create impressive visualizations of source code repositories:
“Software projects are displayed by Gource as an animated tree with the root directory of the project at its centre. Directories appear as branches with files as leaves. Developers can be seen working on the tree at the times they contributed to the project.
Currently there is first party support for Git, Mercurial and Bazaar, and third party (using additional steps) for CVS and SVN. “
Source: http://code.google.com/p/gource/
draw concept maps the easy way
I often have to draw concept diagrams and until now I had to use MindMap tools and tools like Visio. And up until now it wasn’t that much fun… but first things first, what’s a Concept Map?
“A concept map is a diagram showing the relationships among concepts. They are graphical tools for organizing and representing knowledge.
Concepts, usually represented as boxes or circles, are connected with labeled arrows in a downward-branching hierarchical structure. The relationship between concepts can be articulated in linking phrases such as "gives rise to", "results in", "is required by," or "contributes to".”
For example a concept map might looks like this:
So I found a tool called “IHMC CmapTools” – a great package of software available for Windows, Mac OS X and Linux. And this tool makes it so much easier to create impressive and expressive concept maps. It’s freeware and can be used even for commercial purposes.
Source: http://cmap.ihmc.us/
style your Visual Studio
It’s been some time since I’ve written about a Visual Studio Color Theme Generator. And obviously since then a lot happened in the world of customization tools.
The website studiostyles.info is there to help the day with a lot of previewable Visual Studio styles. Even better: all styles can be exported for Visual Studio 2005, 2008 and 2010.
For Visual Studio 2010 you get a .vssettings file which can be imported into Visual Studio using the Tools->Import and Export Settings… menu item.
For Visual Studio 2010 there are additional color styling options available. Microsoft offers a plugin for Visual Studio 2010 called Visual Studio Color Theme Editor. Using this tool everything else can be color customized. So you can have something like that:
Source 1: http://www.schrankmonster.de/2008/08/10/visual-studio-color-theme-generator/
Source 2: http://studiostyles.info/
Source 3: Visual Studio Color Theme Editor
great cheat sheet for .NET string formatting
benchmarking the sones GraphDB (on Mono (sgen) and .NET)
Since we’re at it – we not only took the new Mono garbage collector through it’s paces regarding linear scaling but we also made some interesting measurements when it comes to query performance on the two .NET platform alternatives.
The same data was used as in the last article about the Mono GC. It’s basically a set of 200.000 nodes which hold between 15 to 25 edges to instances of another type of nodes. One INSERT operation means that the starting node and all edges + connected nodes are inserted at once.
We did not use any bulk loading optimizations – we just fed the sones GraphDB with the INSERT queries. We tested on two platforms – on Windows x64 we used the Microsoft .NET Framework and on Linux x64 we used a current Mono 2.7 build which soon will be replaced by the 2.8 release.
After the import was done we started the benchmarking runs. Every run was given a specified time to complete it’s job. The number of queries that were executed within this time window was logged. Each run utilized 10 simultaneously querying clients. Each client executed randomly generated queries with pre-specified complexity.
The Import
Not surprisingly both platforms are almost head-to-head in average import times. While Mono starts way faster than .NET the .NET platform is faster at the end with a larger dataset. We also measured the ram consumption on each platform and it turns out that while Mono takes 17 kbyte per complex insert operation on average the Microsoft .NET Framework only seems to take 11 kbyte per complex insert operation.
The Benchmark
Let the charts speak for themselves first:
click to enlarge
click on the picture to enlarge
click on the picture to enlarge
As you can see on both platforms the sones GraphDB is able to work through more than 2.000 queries per second on average. For the longest running benchmark (1800 seconds) with all the data imported .NET allows us to answer 2.339 queries per second while Mono allows us to answer 1.980 queries per second.
The Conclusion
With the new generational garbage collector Mono surely made a great leap forward. It’s impressive to see the progress the Mono team was able to make in the last months regarding performance and memory consumption. We’re already considering Mono an important part of our platform strategy – this new garbage collector and benchmark results are showing us that it’s the right thing to do!
UPDATE: There was a mishap in the “import objects per second” row of the above table.