Messages in this thread | | | Date | Sun, 24 May 2015 20:55:00 +0200 | From | Jiri Olsa <> | Subject | Re: Cycles annotation support for perf tools |
| |
On Sun, May 10, 2015 at 06:51:56AM -0700, Andi Kleen wrote: > The upcoming Skylake CPU has a new timed branch stack feature, > that reports cycle counts for individual branches in the > last branch record. > > This allows to get fine grained cost information for code, and also allows > to compute fine grained IPC. > > This patchkit adds support for this in the perf tools: > - Basic support for the cycles field like other branch fields > - Show cycles in the standard branch sort view (no IPC here, > as IPC needs the instruction counts from annotation) > - Annotate cycles and IPC in the assembler annotate view > - Add branch support to top, so we can do live annotation. > - Misc support, like dumping it in perf report -D
hi, do you have a branch with this change?
thanks, jirka
| |