On 12/9/05, Hsieh Steve <stevecfhsieh@xxxxxxxxx> wrote: > > I think my question should be: > In linux, a thread seems to be implemented as a light-weight process, right? > if so, a kernel thread is a process from the view point of a scheduler. > then, Is there any popular kernel thread(such as ksoftirqd,keventd) > belonging to a real-time process?? > and > how is the kernel thread scheduled?use the same schedule primitive such as > nice and count and the same time sharing algorithm ?? or there's another > scheduler dedicated to schedule kernel thread?? AFAIR the there is a kernel level scheduler for handling kernel threads and a user level one for user threads, though indirectly sooner or later the user threads actually ask for kernel service through syscalls and then the kernel scheduler takes on from there..... AFAIR i think solaris followed athis LWP approach where it maps user threads to these LWProcesses which are mapped in turn to the kernel threads and are handled by the kernel scheduler. Hope it helps. And do correct me if iam wrong somewhere :-) good luck -- play the game -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
