Re: [Debian] Single boot disk für einen SPARC5
Am Dienstag, 4. September 2001 10:47 aber sprach Marc Herren:
> da kommt gerade die nächste Frage auf... was genau sind BogoMIPS ?
> ... ... ... ... Million Instructions per second ? aber Bogo ??
Aus dem BogoMIPS-mini-HOWTO:
`MIPS is short for Millions of Instructions Per Second.
It is a measure for the computation speed of a program.
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 invention. The kernel (or was it a
device driver?) needs 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 bootup
is that a) it is slightly useful for debugging and for checking that the
computers caches and turbo button work,
and b) Linus loves to chuckle when he sees confused
people on the news.'
Gruß,
Friedemann
--
Leitfaden durch die Phraseologie wissenschaftlicher Veröffentlichungen:
Englisch:
These results were confirmed by waterbird et al., 1990
Deutsch:
Wir publizierten vor Wasservogel et al., 1990
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