Mainframe CPU
Mainframes, or mainframes. Mainframes use dedicated processor instruction sets, operating systems, and application software. The term mainframe originally meant a large computer system housed in a very large framed iron box to distinguish it from smaller minicomputers and microcomputers.
Reducing mainframe CPU consumption is an important task. Saving each CPU cycle not only delays hardware upgrades, but also reduces software licensing fees based on usage scale.
The mainframe architecture consists of two main elements: a high degree of virtualization and full sharing of system resources. Mainframe can integrate a large number of loads in one, and achieve maximum resource utilization; Asynchronous I/O operations. That is, when an I/O operation is performed, the CPU hands the I/O instruction to the I/O subsystem, and the CPU itself is released to execute other instructions. Therefore, the host can perform other tasks while performing heavy I/O tasks.
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