Howto implement a periodic real-time task?

Andre Puschmann andre.puschmann at
Tue Jul 21 18:00:42 CEST 2009

Hi Udo,

Udo A. Steinberg wrote:
> Configure your L4/Fiasco kernel to use the APIC in one-shot mode for
> scheduling. Then, in combination with absolute timeouts, your granularity
> can be as low as 1µs.
I already built a kernel with APIC in one-shot-mode as timer tick source.
Just wrote a periodic sample task to test absolute timeouts as suggested.
I now want to put some load on the system as I did in native Linux with 
tools like "hackbench" and "cache calibrator".
Any suggestions how to achieve this under L4? The same tools inside a 
L4Linux environment?


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