Re: [PATCH 4/4] trace: profile all if conditionals

[Andi Kleen]

Steven Rostedt <rostedt@xxxxxxxxxxx> writes:
>
> Miss means the branch was not taken. Hit means the branch was taken.
> The percent is the percentage the branch was taken.

I'm not sure the results are very useful? What would
you do with it?

It seems like a very special case of gcov, but I think I would
rather have the full thing (patches in -mm I think)

> This adds a significant amount of overhead and should only be used
> by those analyzing their system.

Often this can be also done using CPU performance counters. Might 
be a cheaper option. 

-Andi

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