On Wed, Oct 21, 2015 at 06:52:52PM +0200, Peter Zijlstra wrote: > On Wed, Oct 21, 2015 at 08:26:08AM -0700, Andi Kleen wrote: > > So it turns out that UOPS_RETIRED.ALL+pebs only works by accident > > on Skylake. It's not in the specification. > > Accident or not, it works and you've tested it. Might as well keep it. > Specs can be updated.
No, it's better not to use it. > Also, even with the SNB 'hickup' they still haven't got the memo that > cycles is important for PEBS ? INST_RETIRED.PREC_DIST is a far better cycles than UOPS_RETIRED.ALL (see my earlier example) -Andi -- a...@linux.intel.com -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
