What is the state of the processor, when a process is waiting for some event to occur?

14 Answers   MTS,

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Write a small dc shell script to find number of FF in the design

0 Answers  

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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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When would you choose top down methodology?

3 Answers   CTS,

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What is the difference b/n any GPOS and RTOS?Give suitable examples or characteristic of RTOS to support your answer. What changes can be done in a GPOS to make it work like a RTOS? What basic features will you support, if you have to design a RTOS?

8 Answers   Bosch, Emulogic, L&T, Qualcomm,

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Describe different job scheduling in operating systems.

9 Answers  

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

11 Answers   Google, Hella, Satyam,

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What is a mission critical system ?

3 Answers  

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what is major concerns about any RTOS selection ?

4 Answers   Bosch,

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

6 Answers  

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What do you mean by deadlock?

8 Answers   Bosch,

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