Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Describe swapping technique in UNIX systems.
Swapping is used to control memory contention among processes. If there is excessively much memory contention, processes are swapped out until sufficient memory is available. Allocation of both main memory as well as swap space is done first fit. When the size of a process main memory image increases, a new piece of memory large enough for the whole image is allocated. The memory image is copied and the old memory is freed and the appropriate tables are updated. If no single piece of memory is large sufficient the process is swapped out such as it will be swapped back in with the new size.
Decisions as regards which process to swap in or out are made by the process scheduler, as well called as the swapper. The scheduler wakes up at least every 4 seconds to check for processes to be swapped in or out. There are confirm to avoid thrashing, fundamentally by not letting a process to be swapped out, previous to it has been in the memory for a certain amount of time.
If jobs require not be swapped out, the process table is searched to find a process deserving to be brought in. If there isn't enough memory available processes are swapped out until there.
In the mean while the fork() system call the Kernel creates a copy of the parent process's address space and adds it to the child process. But the vfork() system call do no
write a linux command to display lines from 25 - 45 of directory "/edc/password" write a linux command to display directory in /edc
Q. What are two differences among user-level threads and kernel-level threads? Under what situations is one type better than the other? Answer: (1) User-level threads are un
Problem: a) Prepare a short note on the standard Linux File System. b) Prepare a short note on the RPM Package Management Tool. c) Briefly explain the two types of login
One reason to learn C and C++ is simply that so much software is written in these languages. A related, butmore fundamental reason, is that C and C++ are relatively low-level, allo
Define Page stealing Page stealing is taking page frames another working sets
Explain the Spawnlp Functions Used in the NetWare Spawnlp(flags, execName, arg0,...) The Spawnlp function is used to load a NetWare executable file (NLM) specified by exec
Q. Define the difference among pre-emptive and non pre-emptive scheduling. Answer: Pre-emptive scheduling permits a process to be interrupted in the midst of its execution ta
Write a note on semaphores A semaphore is a tool meant for synchronizing multiple processes trying to access a shared variable. That is a semaphore is used to deal with the cri
Define what can be used as a criterion for classification of data structures utilized in language processing Answer: nature of a data structure, lifetime of a dat
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd