Re: [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.