>and for completeness
>
>VIA Cyrix CIII (original generation 0.18u)
>
>nothing: 28 cycles
>locked add: 29 cycles
>cpuid: 72 cycles
>
>Pentium Pro
>
>nothing: 33 cycles
>locked add: 51 cycles
>cpuid: 98 cycles
>
>(base comparison - pure in order machine)
>
>IDT winchip
>
>nothing: 17 cycles
>locked add: 20 cycles
>cpuid: 33 cycles
2x Pentium MMX 233MHz
nothing: 14 cycles
locked add: 59 cycles
cpuid: 31 cycles
2x Pentium 133MHz
nothing: 14 cycles
locked add: 76 cycles
cpuid: 31 cycles
cpuid is oddly fast.
-- George Greer, greerga@m-l.org | Genius may have its limitations, but stupidity http://www.m-l.org/~greerga/ | is not thus handicapped. -- Elbert Hubbard- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/