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BogoMips (from "bogus" and MIPS) is an unscientific measurement of CPU speed made by the Linux kernel when it boots to calibrate an internal busy-loop. An oft-quoted definition of the term is "the number of million times per second a processor can do absolutely nothing".〔Eric S Raymond, and Geoff Mackenzie, published on the Internet in the early 1990s, untraceable origin.〕 BogoMips is a value that can be used to verify whether the processor in question is in the proper range of similar processors, i.e. BogoMips represents a processor's clock frequency as well as the potentially present CPU cache. It is not usable for performance comparison between different CPUs.〔(【引用サイトリンク】first=Thomas )〕 == History == In 1993, Lars Wirzenius posted an email message〔(【引用サイトリンク】first=Lars )〕 explaining the reasons for its introduction in the Linux kernel on comp.os.linux: : () : MIPS is short for Millions of Instructions Per Second. It is a measure for the computation speed of a processor. Like most such measures, it is more often abused than used properly (it is very difficult to justly compare MIPS for different kinds of computers). : BogoMips are Linus's own invention. The linux kernel version 0.99.11 (dated 11 July 1993) needed a timing loop (the time is too short and/or needs to be too exact for a non-busy-loop method of waiting), which must be calibrated to the processor speed of the machine. Hence, the kernel measures at boot time how fast a certain kind of busy loop runs on a computer. "Bogo" comes from "bogus", i.e, something which is a fake. Hence, the BogoMips value gives some indication of the processor speed, but it is way too unscientific to be called anything but BogoMips. : The reasons (there are two) it is printed during boot-up is that a) it is slightly useful for debugging and for checking that the computer()s caches and turbo button work, and b) Linus loves to chuckle when he sees confused people on the news. : () 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「BogoMips」の詳細全文を読む スポンサード リンク
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