S10 PCB Structure

Two major abstraction of Solaris (Process and File)

(1) Process is basic unit of scheduling and execution on the Solaris
(2) Multi-threaded Process architecture: process, LWP and kernel thread
(3) Solaris kernel process model: procfs, signals,process group,session mgt
(4) Solaris kernel maintain system wide process table for PID and related data
(5) Solaris process abstraction includes traditional unix process model for
HW state and OS maintained SW context. Additionaly, supports multi-thread
execution within a single process. Each thread shares the process state
and can be scheduled and executed on a processor independently of other
threads within the same process
(6) Solaris invents Time Sharing scheduling policy and round robin approach
for process schediling scheme and alogrithm

In addition to Solaris unique process architecture design, a good tool is
been evolved for process monitoring. Procfs is the pseudo file system export
the Process Abstraction Model to user with a file system like interface for
extraction of process data.