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SubjectRe: [PATCH 1/1] perf, tool: partial callgrap and time support in perf record
> > The answer is no: it solves a different problem. Group read 
> > is just fine granuality counting. It cannot be used
> > to sample for multiple events in parallel.
>
> But group read disables sampling for non-leader events so the number
> of total samples should be small, no?

Yes it's smaller, but it doesn't sample everything.

-Andi


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