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What is a Real-Time System ?
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Answer / kwrtos
A real-time system is the system that is capable of
accomplishing its given tasks within a defined period of
time which must be fully acceptable within the scope of the
definition of successful operations to the system. For
instance, if a TV signal-handling system must successfully
finish all its tasks within 16 milliseconds to guarantee a
flick-free video, it has to operate as a real-time system
with respect to the real-time constraints defined as 16ms.
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Answer / madhusudhan r.s
"REAL TIME SYSTEM" IS A SYSTEM IN WHICH THE TIME AT WHICH OUTPUT PRODUCED IS SIGNIFICANT.THESE SYSTEMS MAINTAINS CONTINUOUS TIMELY INTERACTION WITH THE ENVIRONMENT.
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Answer / pawan chahal
Real time OS is two types: 1 hard real time 2 soft real
time ..
| Is This Answer Correct ? | 0 Yes | 1 No |
When would you choose bottom up methodology?
I have been working on one thread which manage and control a couple of circular buffers. It has api for other thread to access. As the thread grows bigger and bigger, I split it as 3 to 4 threads which need to share common buffers, and also their api could be used by other threads, (not these three threads). Inside api, I also allow other threads to access these three threads' common buffers(more than one buffer). SO I have to use mutex to avoid race condition . But I found mutex will be everwhere in all the threads when they update the common buffer. I am wondering whether I could reduce mutex usage(more mutex will hure my system performance). any ideas for how to reduce mutex usage meanwhile to avoid race condition. Thanks
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Vxworks 
