Messages in this thread |  | | Date | Tue, 20 Aug 1996 11:31:45 +0100 | From | Graham Perkins <> | Subject | Real time response under linux |
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Hi all,
I am currently working on a project which involves the prediction of the transmission interval for a number of outstations operating over a UHF radio link. Each outstation only has the ability to transmit and therefore cannot determine if the band is currently occupied. The central receiving station has to determine when each outstation is next going to transmit and the probability of collisions with other outsations.
Due to other requirements, TCP/IP networking etc Linux seemed a possibility. However, standard Linux only has a timer resolution of 10ms and lacks the real time response I require. I believe the signal processing is not performed by the timer interrupt handler but is left to the scheduler. Exacting when my process gets to execute, after the signal is processed, is at the mercy of the scheduler. With all these variable delays prediction is more or less impossible.
If anybody is working on using Linux for real time control or knows how I could possibly address the above problems I would like to hear from you. I have considered writing a real time executive which would run linux as a 'task' - would anybody like to comment?
Thanks to those who respond to this request.
Graham Perkins
-- Graham Perkins Specialix Research Ltd Suite 2, Cobb House, 2 Oyster Lane, Byfleet, Surrey, England, KT14 7DU Tel: +44(0)1932 35221 ext 432 Fax: +44(0)1932 352349 E-mail: grahamp@specialix.co.uk ** Intelligence is only relative **
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