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!
In modern operating systems, applications do not directly access the physical memory. Instead, they use so-called virtual memory, where each virtual address is translated to a physical address. Why would one do this? Here are some of the reasons that virtual memory is useful:
To isolate and protect processes from each other,
To manage the limited physical memory ef?ciently,
To give each process the illusion of having the whole address space for itself.
Since each program thinks it has the whole memory to itself, programs can use a lot of virtual memory. In fact, a computer might use huge amounts of virtual memory, much more than the amount of actual physical memory available. Most of the time this works fairly well, since processes typically only need to use a small amount of their virtual memory at once, and often a lot can be shared among processes (such as with shared libraries). But if the system gets into a situation where the active virtual memory demands exceed the available physical memory, we will need to use another mechanism, such as "swapping" memory pages to disk.
Virtual memory uses one level of indirection in the translation from virtual addresses to physical addresses.
explain how response time are reduced by allowing time sharing on top of multiprogramming
Explain the Thread Contextual Data Threads in Net Ware carry additional context as well. Per-thread, stacks, errno, Net Ware Errno, t_errno and others are available to the ap
We can view an operating system as a resource allocator. Explain. We can outlook an operating system as a resource allocator. A computer system has Many resources (software and
is there any difference between the trap and interrupt??
Define the DosSleep(ms) Function used in the os/2 DosSleep() suspends the currently executing thread for some time interval specified in the ms parameter. If a value of 0 is
Explain DosCreateThread Functions Used in the OS/2 DosCreateThread(&threadID,MyThreadFunction,arg,flags,stackSize) DosCreateThread creates a thread within the context of th
ADVANTAGES OF MICROFERNEL IN YSTEM DESIGN?
best fit
Write a short note on Memory management. Memory management includes reallocating and allocating the memory space. The kinds of allocation of memory FIXED PARTITIONING
How does an operating system make multiprogramming possible by using single processor?
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