Dinesh Ahuja wrote: > I understood that sleep call using sys_nanosleep system call but why > doe we need to have memory mapping Shared libraries are loaded into your address address using mmap(). Even a 5-line program that just calls sleep() uses the shared libraries. -- Francis Litterio franl <at> world . std . com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/