Long description

The figure shows a rectangular block that consists of three sub-blocks labeled I bar O component, Memory mgt component, and Process mgt component. The block is titled with another rectangular block labeled System calls and it is shaded, also a rectangular block is placed at the end of the block and labeled Interrupts and Dispatcher. The I bar O component block has one horizontal sub-block labeled Virtual file system and three vertical sub-blocks. The first vertical sub-block is divided into three parts which are labeled Terminals, Line discipline, and Character device drivers. The second vertical sub-block is divided into three parts which are labeled Sockets, Network protocols, and network device drivers. The third vertical sub-block is divided into four parts which are labeled File systems, Generic block layer, I bar O scheduler and Block device drivers. Memory mgt component block has three sub-blocks labeled Virtual memory, Paging page replacement, and Page Cache. Process mgt component block has three sub-blocks labeled Signal handling, Process slash thread creation, and termination and CPU scheduling.