Re: Locking comment on shrink_caches()

Alan Cox (
Wed, 26 Sep 2001 18:50:08 +0100 (BST)

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

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