Bogomips II (2000) (was Re: Giati ews 64 MB mnimi to Mandrake????)

[DJ Art]

Le Halachuck wrote:

> Erotisi pros alloys: Ston en logo ypologisti moy
> bgazei 999.53 Bogomips. Einai sosto? Pos tha to
> tsekaro?

Σου κάνω post ακριβώς copy-paste κομμάτι των archives:

Και επί της ευκαιρίας, nmav, θυμάσαι πού βρήκες το bogomips faq ??? Πρίν
από ένα χρόνο δεν το είχα βρεί και μόλις θυμήθηκα ότι ήθελα (πάλι πρίν
από ένα χρόνο) να σε ρωτήσω που το βρήκες :-))


Subject: bogoMIPS
From: Nikos Mavroyanopoulos (nmav at hellug.gr)
Date: Thu 25 Nov 1999 - 21:02:43 EET 

Μιας και αναφέρθηκε σε προηγούμενο email απο τον DJ Art, (αν και έλεγε
MB/sec), 
εψαξα λίγο για να δώ τί είναι αυτά τα bogoMIPS. (απο το bogomips faq): 

What are bogoMIPS? 
  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. 
  [...] 

Why to pay attention to BogoMips ? 
  [...] 
  To see whether your system is faster than mine. Of course this 
  is completely wrong, unreliable, ill-founded, and utterly useless, 
  but all benchmarks suffer from this same problem. So why not 
  use it? This inherent stupidity has never before stopped people 
  from using benchmarks, has it? :-) 



-- 
DJ Art (aka Kyritsis Athanasios) <djart at hellug.gr>
Studying Electrical & Computer Engineering @ UPatras
http://members.hellug.gr/djart

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