What is the difference between Hard and Soft real-time systems ?

11 Answers   Google, Hella, Satyam,

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what is the need of creating 4GB of pages in linux?

1 Answers   TCS,

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If two processes which shares same system memory and system clock in a distributed system, What is it called?

7 Answers  

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Give an example of microkernel.

13 Answers   Global Edge, Samsung,

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When would you choose bottom up methodology?

5 Answers   Knowx Innovations,

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What do you mean by deadlock?

8 Answers   Bosch,

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What is the important aspect of a real-time system ?

6 Answers  

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What is priority inversion ? and What is the solution ?

6 Answers   Qualcomm, Tandberg, Wipro,

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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

2 Answers  

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what are the rules u follow when u r writing critical section of code?

6 Answers   TCS,

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What is a Real-Time System ?

5 Answers  

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what is major concerns about any RTOS selection ?

4 Answers   Bosch,

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