3 ms·
Why is syscall blocking the central problem? More precisely, what kind of problem is it?
by qznc 13y ago
Why is syscall blocking the central problem? More precisely, what kind of problem is it?
- dschatz 13y agoBecause if I use M:N threading then logically one of my user threads blocked and a different one should run during my timeslice. The kernel however is unaware of how I use the kernel thread and will block, believing that I cannot proceed. 1:1 threading lacks this problem but operations such as creating threads or deleting them require syscalls and are therefore relatively expensive.