what is the need of creating 4GB of pages in linux?
Answer / ravi a joshi
Not sure what this question is. But looks like the question
is: Why 4GB addressing space available in Linux. Well, the
simple answer is it can address so much of memory with
available 32 address lines. 2 ^ 32 = 4 GB.
Is This Answer Correct ? | 19 Yes | 1 No |
What is the important aspect of a real-time system ?
What is the state of the processor, when a process is waiting for some event to occur?
When would you choose bottom up methodology?
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,
what is the need of creating 4GB of pages in linux?
What is a Real-Time System ?
Describe different job scheduling in operating systems.
what are the rules u follow when u r writing critical section of code?
what is difference between IRQ and FRQ ?
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
what is major concerns about any RTOS selection ?
When would you choose top down methodology?