Re: Add fine grained sampled metrics for perf script

2017-11-23 Thread Arnaldo Carvalho de Melo
Em Thu, Nov 23, 2017 at 08:47:42AM +0100, Jiri Olsa escreveu: > On Fri, Nov 17, 2017 at 01:42:57PM -0800, Andi Kleen wrote: > > SNIP > > > TopDown: > > > > Note TopDown requires disabling SMT if you have it enabled (e.g. by > > offlining > > the extra CPUs), because SMT would require sampling p

Re: Add fine grained sampled metrics for perf script

2017-11-22 Thread Jiri Olsa
On Fri, Nov 17, 2017 at 01:42:57PM -0800, Andi Kleen wrote: SNIP > TopDown: > > Note TopDown requires disabling SMT if you have it enabled (e.g. by offlining > the extra CPUs), because SMT would require sampling per core, which is not > supported. > > $ perf record -e '{ref-cycles,topdown-fetc