多核心和单核心cpu怎样工作的（Multi core and single core CPU how to work）.docVIP

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多核心和单核心cpu怎样工作的（Multi core and single core CPU how to work）.doc

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多核心和单核心cpu怎样工作的（Multi core and single core CPU how to work）

多核心和单核心cpu怎样工作的（Multi core and single core CPU how to work） Multi core and single core CPU how to work? WINDOWS platform WIN32 program thread, multi core processing problems A multi core program is good, how, who soon speed slow, I have something to say. The title of the card has to determine the scope of the discussion, we only discuss the X86/X64 CPU on the WINDOWS platform WIN32 program thread, multi core processing problems I dont want to say who is good, please read my analysis First of all, say, thread, the concept of the process. A EXE is a program that only one process in the process, including the basic resources assigned by the operating system to this program, but our great CPU can not directly run the process (WINDOWS system it) but to run a thread of the process the thread through the operating system to get the permission of CPU to make their own operation (WIN XP usually get the right to perform the time is 2ms) that is to say, a process corresponding to a EXE, this process contains at least one thread to execute. Then, in simple words, contains only a single thread the process can be called a single threaded program, still contains more than one, can be called a multithreaded program. (in fact, even writing the programs, write only a single thread program, then At run time is not only a thread, because the operating system will automatically as he set up some other thread to ensure the program running). Well, now basically understood, processes and threads. Now that the single core (a) and (a) a core CPU. core (a physical CPU) is a CPU in the WINDOWS, each CPU can get the processing task operating system distribution, that is one of the core can be the execution of a process in an operating system thread. For single threaded programs, only one thread to get his CPU time, must enter the queue via the operating system, operating system scheduling, to obtain a CPU right time (if it is a single core, then certainly only 1 options, multi core then, each o