On Wed, Jul 20, 2016 at 04:28:34PM +0300, Nikolay Borisov wrote: > Hello, > > Running perf version 4.4.14.g0cb188d (no modification to the PMU/perf > code) I observed that "perf top" counts no cycles and produces no > output. After a bit of head scratching and testing I figured that > running "perf top -e cycles" actually works whereas the default option > is equivalent to running "perf top -e cycles:p". So the latter version > seems to not work on my machine.
hum, I think Core2 has PEBs valid only for instructions not cycles.. I'll check why perf top forcing the precise for cycles I thought we had that automated already jirka
