Re: [PATCH v2 2/6] perf report: Caculate and return the branch counting in callchain

Andi Kleen
2016-10-20T18:20:39Z

> OK, I am more confused now. Are you predicting some quantity related
> to transactions? Why would you divide abort count by branch count?
> Further, I just looked at patch 6/6. It has the following text:
>
> + Also show with some branch flags that can be:
> + - Predicted: display the average percentage of predicated branches.
> + (predicated number / total number)
> + - Abort: display the average percentage of abort branches.
> + (abort number /total number)
> + - Cycles: cycles in basic block.
>
>
> I think there is inconsistency between what you are suggesting and
> what the patch has.

An abort is an unique branch. But yes there is no total number,
so the formula will always be 100%. So yes would probably be
better to just display a count for abort.

-Andi