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Q. Suppose an operating system maps user-level threads to the kernel utilizing the many-to-many model where the mapping is done through the use of LWPs. In addition the system allows program developers to create real-time threads. Is it essential to bind a real-time thread to an LWP?
Answer: Yes or else a user thread may have to compete for an available LWP prior to being actually scheduled. Through binding the user thread to an LWP there is no latency while waiting for an available LWP the real-time user thread can be scheduled immediately.
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#include #include #include #include #include int main(void) { int pchan[2], pid, rval, cvar; char buf[20]; if (pipe(pchan) == -1){
Virtual addresses are made up of two parts: the ?rst part is the page number, and the second part is an offset inside that page. Suppose our pages are 4kb (4096 = 212 bytes) long,
whats 9 times 56
Q. In following Section we mentioned that disabling interrupts frequently could affect the system's clock. Describe why it could and how such effects could be minimized.
Define the “turn-around” time of a user job Turn- around time is total time taken to execute the job.
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