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gokussj9

Beginner

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10-08-2010
07:09 AM

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Question regarding Stall Cycles

I saw one of paper (Cycle Accounting Analysis on Intel Core2 Processors). In this paper it's given RS_UOPS_DISPATCHED (CMASK=1,INV=1) gives the number of stall cycles for a processor in a given interval. Suppose stall cycles given for a program's execution , by the above assumption is C(stall) and the useful cycles are C(useful) at frequency F

C= C(useful) + C (Stall)

If I modify the frequency to f, the total number of cycles taken above is

C" = C(useful) * (f/F) + C(Stall)

Is this above formulation correct w.r.t to the stall cycles given by the event RS_UOPS_DISPATCHED?

Waiting for your replies.

Thank You

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robert-reed

Valued Contributor II

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10-08-2010
11:23 AM

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