[plug] Slow kernel build

[Adrian Woodley]

On Fri, 22 Sep 2006 19:45:55 +0800, Cameron Patrick <cameron at patrick.wattle.id.au> wrote:
> Fred Janon wrote:
> 
>> Build speed:
>> I don't know what the 'bogomips' are,
> 
> They're directly proportional to clock speed on modern x86 CPUs.  (Looks
> like 2x MHz from the values Jim quoted.)  It has little correlation to
> machine performance but is used internally by the kernel for timing
> things.

BogoMips (from "bogus" and MIPS) are 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".

http://en.wikipedia.org/wiki/Bogomips

> 
>> Their architectures are totally different
> 
> That's not true.  Early Celerons are based on a Pentium III but the
> later ones are Pentium IVs with cache ripped out.
> 
> Other than that, yeah: Celerons suck and C compilers _really_ love cache
> :-)
> 
> Cameron
> 
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