bogomips

[Jim Potter]

That's right -- my dual 1ghz powermac with YDL 2.3 displays:

cat /proc/cpuinfo

processor       : 0
cpu             : 7455, altivec supported
clock           : 999MHz
revision        : 2.1 (pvr 8001 0201)
bogomips        : 996.14

processor       : 1
cpu             : 7455, altivec supported
clock           : 999MHz
revision        : 2.1 (pvr 8001 0201)
bogomips        : 996.14

total bogomips  : 1992.29
machine         : PowerMac3,5
motherboard     : PowerMac3,5 MacRISC2 MacRISC Power Macintosh
detected as     : 69 (PowerMac G4 Silver)
pmac flags      : 00000000
L2 cache        : 256K unified
memory          : 512MB
pmac-generation : NewWorld


> >> Bogomips = MHz * 2 for all PPC procesors
> > Not true...
> >
> > [owen@fred owen]$ cat /proc/cpuinfo
> > cpu             : 603ev
> > clock           : 200MHz
> > revision        : 2.1 (pvr 0007 0201)
> > bogomips        : 133.12
>
> Another popular class of PPC which doesn't get 2 * MHz is the 7450
> family (aka G4+), which is what's in every Apple G4 system 550 MHz or
> faster.  I think it gets roughly 1 * MHz, but that's from memory.  This
> is not predictive of actual performance on real world code...
>

--
Sincerely,

Jim Potter
45th Parallel Processing
  Firefighting: Bustin' ours, Savin' yours.