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.

Posted Date: 7/27/2013 2:35:45 AM | Location : United States

Ask an Expert

Related Discussions:- Differences among user-level threads and kernel-level thread, Assignment Help, Ask Question on Differences among user-level threads and kernel-level thread, Get Answer, Expert's Help, Differences among user-level threads and kernel-level thread Discussions

Write discussion on Differences among user-level threads and kernel-level thread
Your posts are moderated

Write your message here..

Related Questions

Server thread, Extend task 1 so that the requests are issued by the clients... Extend task 1 so that the requests are issued by the clients instead of the server. The server now do not use the "all_requests.dat" file. Instead every client thread reads from

Describe paging algorithm needs a reference bit, Q. Suppose that you want ... Q. Suppose that you want to utilize a paging algorithm that requires a reference bit (such as second-chance replacement or working-set model) however the hardware does not provide

Network operating system and a distributed operating system, Problem: (... Problem: (a) (i) Explain what a single system image is and how it is related to the concept of a distributed operating system? (ii) What are the main differences between a

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

Write xeyes on command line, Ask question #Minimum 100 words accepteWrite a... Ask question #Minimum 100 words accepteWrite an xeyes command to display a window that is: ? SIZE: ¦ 400 pixels wide ¦ 300 pixels tall ? LOCATION: ¦ 100 pixels from the right edge

Components of the r/e system, What components of the R/e system initiate th... What components of the R/e system initiate the start of background jobs at the specified time? The batch scheduler initiates the begin of background job.  The dispatcher then s

File allocation, linked allocation using i node linked allocation using i node

Safety algorithm and resource request algorithm, Safety algorithm : This is... Safety algorithm : This is to make sure if the system is in safe state or not. It may need an order of m x n2 operation to determine if the state of the system is safe or not.

Calculate the average waiting time, Calculate the Average Waiting Time ... Calculate the Average Waiting Time CPU burst time points out the time, the process needs the CPU. The subsequent are the set of processes with their respective CPU burst time (

Calculate the maximum file size , A UNIX file system has 1-KB blocks and 4-... A UNIX file system has 1-KB blocks and 4-byte disk addresses. What is the maximum file size if i-nodes contains 10 direct entries, and one single, double, and triple indirect entry