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Re: how to implement EDF scheduling in eCos
- From: Andrew Lunn <andrew at lunn dot ch>
- To: Sasanka Sarkar <sasanka dot sarkar at gmail dot com>
- Cc: ecos-discuss at ecos dot sourceware dot org
- Date: Thu, 20 Oct 2005 16:20:37 +0200
- Subject: Re: [ECOS] how to implement EDF scheduling in eCos
- References: <94a304ef0510200600o3820a8e9red2e52f0c9211139@mail.gmail.com>
On Thu, Oct 20, 2005 at 06:30:00PM +0530, Sasanka Sarkar wrote:
> hi
> My intention is to implement EDF scheduling in eCos.Currently eCos
> is having the scheduling like BitMap,Multilevel ,lottery.Exactly the
> same way I also want to add a new scheduling EDF.Now could anyone tell
> me how to do it?
OK. back from googling. Earliest Deadline First.
What i don't see is how Earliest Deadline First fits a thread
model. Threads are at the heart of eCos. How can you give a deadline
to a thread? You have to give a deadline to an event or action. "This
action must be completed by time X."
Could you explain this a bit more, how you see EDF and threads combined.
Andrew
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