Re: Cyclic Scheduling for linux
From: George Anzinger
Date: Mon Nov 03 2003 - 18:33:32 EST
He is supposed to do this for a class. I wonder if the teacher would give extra
credits for grabbing on open source solution instead of writting the code...
But then you did not say the Concurrent thing was open source. :)
-g
Albert Cahalan wrote:
I am working on providing a cyclic scheduling policy
to the current non real time version of the linux to
support hard real time tasks as part of one of my
projects. This policy should be able to support
aperiodic, periodic and sporadic tasks too. Could any
one pour some light on how to go about achieving it?.
Any Helpful tips, project reports, links or advices
are greatly appreciated.
I suppose you expect to write this, but if not,
you can get it in Concurrent's Red Hawk Linux
product.
Marketing says:
"RedHawk's Frequency-Based Scheduler (FBS) is a
high-resolution task scheduler that enables the
user to run processes in cyclical execution patterns.
FBS can control the periodic execution of multiple,
coordinated processes utilizing major and minor
cycles with overrun detection. A performance
monitor is also provided to view CPU utilization
during each scheduled execution frame."
That's on a "real" Linux kernel, not like RTAI
or RT-Linux. There are some other cool real-time
features as well, and an Ada compiler if you're
so inclined.
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--
George Anzinger george@xxxxxxxxxx
High-res-timers: http://sourceforge.net/projects/high-res-timers/
Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml
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