张海 复习2
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2022-08-03
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Final
Introduction And System Structures
Operating system is a set of software for managing computer resources.
Exception
Interrupt
I/O
Clock
Exception
Fault
Trap (syscall)
I/O:
(Programmed I/O)
Interrupt I/O: Synchronous or asynchronous.
DMA
(Channel)
Batch system: Multiprogramming or not.
Time-sharing (multitasking) system.
Response time: Process (user) count , time slice , Response time
.
System call: …
Microkernel v.s. monolithic kernel: …
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