Differences among user-level threads and kernel-level thread, Operating System

Assignment Help:

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 unidentified by the kernel whereas the kernel is aware of kernel threads.

(2) On systems utilizing either M:1 or M:N mapping user threads are scheduled by the thread library and the kernel schedules kernel threads.

(3) Kernel threads require not be associated with a process where as each user thread belongs to a process. Kernel threads are usually more expensive to maintain than user threads as they must be represented with a kernel data structure.


Related Discussions:- Differences among user-level threads and kernel-level thread

Palm os provides no signifies of concurrent processing, Q. Palm OS provides...

Q. Palm OS provides no signifies of concurrent processing. Discuss three major complications that concurrent processing adds to an operating system. Answer: a. A meth

#title.paging, explain hierarchical,hashed and inverted paging

explain hierarchical,hashed and inverted paging

Us constitution, what branch of goverment were the federal courts are?

what branch of goverment were the federal courts are?

Evicting pages from physical memory, When do we write a page from physical ...

When do we write a page from physical memory back to the disk? In general, caches have two broad types of writing policies. One approach is a write-through cache. In this case,

10 marks, Differentiate between sequential access and direct access method?...

Differentiate between sequential access and direct access method?

Explain the sleep (ms) function, Explain the Sleep (ms) Function  This ...

Explain the Sleep (ms) Function  This call places the current thread in a suspended state for the number of milliseconds passed as the parameter (ms). After that Windows NT wil

Packets and time division multiplexing (tdm), Broken data into small packet...

Broken data into small packets allow time division multiplexing. In TDM every packet leaves the sender and is switched on the shared interaction channel through a multiplexer. At t

Describe why sstf scheduling tends to favour middle cylinder, Q. Describe w...

Q. Describe why SSTF scheduling tends to favour middle cylinders over the innermost and outermost cylinders. Answer: The middle of the disk is the location having the smalles

What are the different directory structures, What are the different directo...

What are the different directory structures? Explain each type. There are five dissimilar directory structures: 1.      Single level directory 2.      Two level directory

Explain about demand paging, Explain about demand paging? A demand pagi...

Explain about demand paging? A demand paging system is same to a paging system with swapping. Processes reside on secondary memory. When we require executing a process, we chan

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd