Il 02/06/2013 17:32, Gleb Natapov ha scritto:
> On Thu, May 30, 2013 at 07:43:07PM +0200, Paolo Bonzini wrote:
>> This patch includes two fixes for SB:
>>
>> * the 3rd fixed counter ("ref cpu cycles") can sometimes report
>> less than the number of iterations
>>
> Is it documented? It is strange for "architectural" counter to behave
> differently on different architectures.
It just counts the CPU cycles. If the CPU can optimize the loop better,
it will take less CPU cycles to execute it.
Paolo
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