Operating system and operating system management method

Abstract

The invention discloses an operating system and a management method. The operating system comprises: a plurality of kernel service modules operated in kernel state corresponding to the system calling type, which are distributed on at least one processor and / or processor kernel; a plurality of application managing modules used for managing application procedure and application progress are distributed on different processor and / or processor kernel from the kernel service modules, which are used for managing application procedure and application progress; the kernel service modules are communicated with the application procedure through a system calling information. The management method comprises: step S1, the application system sends the system calling information, and then executes codeswithout dependent relation with the system calling result after sending the information; step S2, the kernel service module receives the system calling information and sends the system calling resultback to the application procedure; step S3, the application procedure receives the system calling result and executes codes with dependent relation with the system calling result.

Description

technical field [0001] The invention relates to computer operating systems, in particular to operating systems and management methods based on multi-processor and / or multi-core processor (Multicore Processor) computing environments. Background technique [0002] Prior art processors or processor cores are capable of operating in two modes, kernel mode and user mode. like figure 1 As shown, when the operating system enters the kernel state through a system call (Syscall), the processor executes kernel codes to complete some functions of the operating system. When the operating system enters the kernel state, the application context (Context) will be switched out from the currently executing processor or processor core, that is, the existing operating system adopts "Context Switching (Context Switch)" to support the kernel state and User state switching. This context switching mechanism brings a lot of overhead, such as cache memory (Cache), page table cache (TLB) refresh, ...

AI Technical Summary

Problems solved by technology

However, the existing operating systems running on multi-processors and / or multi-core processors, in addition to the performance degradation of the operating system caused by the above-mentioned "context switching", also have a deficiency: when the operating system function needs to be called , different processors or processor cores must mutually exclusive access to shared resources

Locks are divided into different granularities. Big Kernel Lock is the simplest way to support multi-processors, but its performance and scalability are poor; Fine Grained Lock is more complicated to implement, but its performance and scalability better

However, with the development of multi-core processors, there are more and more processor cores inside the processor, which greatly increases the frequency of lock usage.

Some problems caused by locks, such as competition, deadlock, etc., also increase the chances of problems, thus affecting the performance and scalability of the operating system

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