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2024-05-26 - 14:45

Dates and Events:

OSADL Articles:

2023-11-12 12:00

Open Source License Obligations Checklists even better now

Import the checklists to other tools, create context diffs and merged lists

2023-03-01 12:00

Embedded Linux distributions

Results of the online "wish list"

2022-01-13 12:00

Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completed

Another important milestone on the way to interoperable Open Source real-time Ethernet has been reached

2021-02-09 12:00

Open Source OPC UA PubSub over TSN project phase #3 launched

Letter of Intent with call for participation is now available

Real Time Linux Workshops

1999 - 2000 - 2001 - 2002 - 2003 - 2004 - 2005 - 2006 - 2007 - 2008 - 2009 - 2010 - 2011 - 2012 - 2013 - 2014 - 2015

Eleventh Real-Time Linux Workshop on September 28 to 30, in Dresden, Germany

Announcement - Hotels - Agenda - Paper Abstracts - Presentations - Registration - Abstract Submission - Xenomai User Meeting - Sponsors


Towards Linux as a Real-Time Hypervisor

Jan Kiszka, Siemens AG, Corporate Technology

In this paper, we will present our research work on improving the real-time qualities the Linux hypervisor KVM can provide to its guests. We will specifically focus on a new paravirtualized scheduling interface. It allows guests to influence the scheduling parameters of their virtual CPUs (VCPU) on the host. This, in turn, enables the Linux host to account for real-time load inside guest systems by prioritizing VCPUs properly so that batch load both in other guests as well as on the host itself does not unacceptably interfere.

We will introduce the design of our paravirtual scheduling interface as well as selected implementation aspects. Based on experimental results and theoretical analysis, we will discuss which real-time guarantees KVM is able to provide, what PREEMPT-RT can additionally contribute to this, and sketch potential future improvements.