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#3. What is Thread? : User level thread vs Kernel level thread
Last updated on Jan. 23, 2021, 7:01 p.m. by None
Explained Threads in OS and its types.
Thread:
- Thread is a lightweight process because it uses fewer resources as compared to a process.
- Each thread represents a separate flow of control.
User level thread vs Kernel level thread:
| User level thread | Kernel level thread |
| i)User level threads are faster to create and manage. |
i) Kernel level threads are slower to create and manage. |
| ii)User level threads can run on any OS | ii)Kernel level threads are specific to that OS. |
| iii)User level threads are maintained by users | iii)Kernel level threads are maintained by OS. |
| iv)If one user level thread is blocked, then the entire process is blocked. |
iv) If one kernel level thread is blocked, then there is no effect on other threads. |
| v)Eg-POSIX P-threads,Mach C-Threads | v) Eg-Windows 95/96,Solaris |
| vi)They are also called as many-to-one mapping threads. |
vi)They are also called as one-to-one mapping threads. |
User Level Thread:
Kernel Level Thread:
You can refer to this YouTube video for Video Explanations
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