Page 30 - slides.dvi
P. 30

•
                                                                                              •
                                              •
             In
                                       4
                                                                          8
                                                            4
                                                     8
                    8
                                                                                4
                                 4
                          8
                                                                                       4
                                                                                                               Idle
                                                                                                     What
   Operating
                                                                                              halt
                                                                   busy
                                                                                                     do
                    can
                                              invent
                          uses
             general
                                                     ugly,
                                       gives
                                                                                       saves
                                                            quick
                                 could
   Systems
                                                                          might
                                                                                                     we
                                                                   wait
   —
                                              idle
                    slow
                                                                                increases
                                                                                                               system
                                 use
                                                                   in
                                                                                                     do
                          some
             there
   CPU
                                                                          take
                                                                                              processor
                                 it
                                                                                       power
                                                     useless
                                                                                                     if
             is
                                       uniform
                                 to
             a
                                                            response
                                                                          too
                                              process,
   Scheduling
                                                                                       (and
                                                                                              (until
                                                                                                     there
                    interrupt
                                 run
                                                                                processor
                          memory
                                                                   scheduler
                                                            time
                                                                          long
                                                                                                     is
                                                                          to
                                       structure
                                                                                                     no
                                              always
             trade-off
                                                                                       heat!)
                                 checks
                                                                                lifetime
                                                                                              interrupt
                    response
                                                                          stop
                                                                                                     ready
                                                                          and
             between
                                              available
                                                                                              arrives)
                                              to
                                                                          start.
                                                                                                     process?
                                              run
             responsiveness
             and
             usefulness.
   26
   25   26   27   28   29   30   31   32   33   34   35