Thomas Gleixner, linutronix GmbH
Dual kernel approaches
- RTAI
- RTLinux
- DROPS
- Xenomai
Linux RT history
RTLinux - Wikipedia, the free encyclopedia
Opinion I
Riwht RTLinux you have to split the app up into the hand realtime.
2004 Preemt RT stared
Driven bye kernel developers
Full integration into mainine "planned
Opinion 2
Controlling a laser with Linux is crazy, but everyone in this room is crazy in his own way.
Preempt-RT Readmap Timeline
- 2004 Start of work
- 2006 First productized version
- 2011 Full techonological rewrite
Challenging project
Techonology status
- Successfull in many aspects
- Still a challenging project
Tasks accomplished
- High resolution timers
- Mutex infrastructure
- Generic interrupt handring infrastructure
and so on....
Remaining tasks
Find portable solutions for mainline
RT PREEMPTは"mainline"と呼ばれるリーナス・トーバルズ管理の主要カーネルツリーへのマージを目指している。
Community status
Assumed large user
Use base
- 3000 downloads within 5 business days after release
- Assumed size on download statics
industrial uses
- 60% Western Europe
- 25% North America
- 10% Asia
- 5% The Rest
Core developers
One part time funded project lead
Conmmunity contribution
Close to zero Not even documentation (see the rt.wiki.kernel.org)
https://rt.wiki.kernel.org/index.php/Main_Page
- The future* Tecnological aspects
- Sustainability aspects
Technology
it can be solved
Is Preept-RT sustainable?
- Not with the current resources
Not with the sunsume only mentality
OSADL is running a collaboratively founded large scale RT test farm, which is crucal for the success of the project and suffers from similar issues.
Wind River Newsroom: News Release Archive
- Linux Foundation will facilitate companies that wish to collaboratively found the R&D work require
