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Friday, 19 February 2016
Monday, 15 February 2016
Tuesday, 12 January 2016
Wednesday, 6 January 2016
CPU Scheduling Tutorials
CPU Scheduling
• General rule
— keep the CPU busy; an idle CPU is a
wasted CPU
• Major source of CPU idleness: I/O (or waiting for it)
• Many programs have a characteristic CPU–I/O burst
cycle
— alternating phases of CPU activity and I/O
inactivity
CPU-bound programs have fewer, longer CPU bursts
I/O-bound programs have more, shorter CPU bursts
Saturday, 2 January 2016
Friday, 1 January 2016
Wednesday, 23 December 2015
Tuesday, 22 December 2015
Friday, 11 December 2015
Disk Scheduling Slides
Disk Scheduling Slides
In operating systems, seek time is very important. Since all device requests are linked in queues, the seek time is increased causing the system to slow down. Disk Scheduling.Algorithms are used to reduce the total seek time of any request. PURPOSE.
