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RTAI vs eCos
- From: R Vamshi Krishna <vamshi at cse dot iitb dot ac dot in>
- To: ecos-discuss at ecos dot sourceware dot org
- Date: Mon, 17 Apr 2006 21:32:35 +0530 (IST)
- Subject: [ECOS] RTAI vs eCos
I am working towards making eCos a hard real-time kernel. i.e to say each
kernel primitive is deterministic and bounded by time.
But to find out what is currently making eCos being tagged as a soft
real-time system, I have reached a dead end.
Initially I thought that the way the threads are dequeued in semaphores
maybe an indicator. i.e the time to execute cyg_sem_signal() depends on
the no. of threads blocked. Since (I thought) it was not deterministic, I
tried to see RTAI's approach.
But RTAI instead enqueues, (PRIO_Q option) and this depends on no. of
tasks blocked.
Can someone tell my what makes RTAI a hard real-time RTOS and not eCos.
It will be really helpful.
--
Regards,
Vamshi
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R.Vamshi Krishna,
M.Tech. CSE (II year),
IIT Bombay
Room no. 320, A-wing, Hostel-12
Mobile : +919869781633
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Yesterday is a past, tomorrow is a future , today is a gift that's why it's called 'present'
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