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Michael Prokop
Works at Grml Solutions
Attended Graz University of Technology
Lived in Graz
1,316 followers|22,200 views
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Michael Prokop

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Wow. Sehr schön! Das geht nun auch demnächst "out of the box" in debian "jessie":  Booten von einem verschlüsseltem Bootdevice via GRUB2.

Danke +Michael Prokop.
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.oO( soll ich den Kreis schließen…? (o: ) 
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#Devops  Meeting in #Graz  on 9th of October 2013, I'll be giving a talk about "Continuous Integration in data centers" with topics like #Jenkins , Jenkins-Debian-Glue, #puppet , #mcollective ,... - join us!
 
Für Interessierte:
Auftaktveranstaltung der Infracoders Graz, organisiert von +Edmund Haselwanter

Einfach anmelden, hingehen, austauschen.
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public slides / video ? :-)
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Michael Prokop

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We are proud to announce the first release candidate of the upcoming #Grml  version 2013.09, code-named 'Hefeknuddler'!

This Grml release provides fresh software packages after the #Debian  stable release (AKA #wheezy ) has been released. As usual it also incorporates up2date hardware support and fixes known bugs from the previous Grml release.

For detailed information about the changes between 2013.02 and 2013.09 have a look at the official release announcement:

  http://grml.org/changelogs/README-grml-2013.09-rc1/

Please test the ISOs and everything you usually use and report back, so we can complete the stable release soon. If no major problems come up, the next iteration will be the stable release, which is scheduled for the end of September.
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Just finished my first batch of #homebrew #beer: 40 bottles of delicious st(d)out! Thanks to +Andreas Krennmair for the fantastic name suggestion, thanks to +Florian Klien for his help and brewing knowledge.
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+Andreas Tille since I didn't/won't make it to DebConf, sadly nope :-/
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Michael Prokop

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Nerdgasm!
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I wish I were at this lecture, but I was not.
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Michael Prokop

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Today at #WallSkills : The famous Admin-Zen !
http://wall-skills.com/2013/admin-zen/ #admin #devops #maintenance
And yes, you should hang it up on your office walls as well as on your computing center walls. ;)
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Michael Prokop

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We just released #Grml  2013.09 - codename Hefeknuddler.

This Grml release provides fresh software packages after the #Debian  stable release (AKA wheezy) has been released. As usual it also incorporates up2date hardware support and fixes known bugs from the previous Grml release.

More information is available in the release notes of Grml 2013.09:

 http://grml.org/changelogs/README-grml-2013.09/

Grab the latest Grml ISO(s) and spread the word! 

  http://grml.org/download/

Thanks everyone and happy grml-ing!
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Michael Prokop

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Thanks Andreas, Michael, Richard, Lars, Gerhard, Alex, Victor, Jon, Daniel and everybody who helped with the release :-) I'm proud to be a part of this team.
http://www.sipwise.com/news/announcements/spce-v3_0-release/
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Michael Prokop

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I spoke about http://codesearch.debian.net/ about a month ago at GPN13 (http://gulas.ch/).

The recording is now online and — as a special treat involving more hours of work than I originally thought — has english subtitles available.

So, if you like to know how Debian Code Search works (no prior knowledge required), please watch this video :).

Debian Code Search [GPN13]
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Michael Prokop

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Pretty cool psychological effect. What you hear is what you see.
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Whoa. Not only is the effect remarkable, It also implies that our brains speech centers seems to have and use a visual model of mouth and face movements.
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Low latency audio on Android

Somebody asked on jack-devel for a summary of the recent Google I/O high-performance audio talk.

If you're interested and don't follow jack-devel, here's what I wrote:

----- copy & paste ----
   - Android until JellyBean had no SCHED_FIFO in the kernel.                  
                                                                                
   - Android now uses SCHED_FIFO and CGROUPS with 5% budget for low-latency audio while normal audio runs with SCHED_OTHER (low-priority). They use the term "fast-path" for low-latency access to the audio hardware. Fast-path requires OpenSLES C++ code, no Java code.                                                              
                                                                                
     The normal audio creates a submix that's fed into the fast-path system. That's similar to what you have when running jackd with the pulseaudio-jack modules.                                                   
                                                                                
   - Android has no means to deal with priority inversion                       
                                                                                
   - Google developers emphasise not to block in your audio thread              
     (surprise, surprise, that's mentioned in the JACK FAQ for years)           
                                                                                
   - Sample rates vary among devices (some 44.1kHz, others 48kHz)               
                                                                                
   - Hardware buffer sizes vary among devices, e.g., 240 samples/buffer         
                                                                                
   - The last two points will be addressed by adding an API to query the sample rate and buffer size (Android API level 17)                         
                                                                                
   - Google hardware team will fix kernel audio driver bugs                     
                                                                                
The guy who wrote the synthesizer finally talked about optimisations he had done to his application. Nothing new: Use C++ instead of Java, use the correct buffer size, use aligned buffers, use SIMD asm.                     
                                                                                
                                                                                
So after all, there is hope for low-latency on Android. It already works on some devices, more devices will follow. For the first time, the architecture is similar to what's known to work on (desktop) Linux.          
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Have him in circles
1,316 people
Daniela Mellacher's profile photo
Work
Occupation
IT Consultant
Employment
  • Grml Solutions
    IT Consultant, 2008 - present
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Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Previously
Graz
Story
Tagline
Free Software Hacker
Introduction
Grml developer (Debian based Linux Live system for sysadmins)

Debian Developer

Founder and head of Grml-Forensics (Live system designed for IT forensic investigations and data rescue tasks)

Doing automated system deployment (using Grml, Debian, FAI,...) and system automation way too much (be warned - go away or I'll replace you with a script).

Addicted to Zsh, Git and a strange mixture of Vim and Emacs (Org-Mode ftw!).

Playing drums and badminton.

Pretty deep into open source (and managed to write a german book about open source project management).

Loves reading (but reads way too many books at the same time, though if you think you know a book I should read let me know).

Living in the Internet and Graz/Austria.
Education
  • Graz University of Technology
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Male