On Tue, Mar 01, 2016 at 01:32:39PM +0100, Jiri Olsa wrote: > On Mon, Feb 29, 2016 at 02:36:24PM -0800, Andi Kleen wrote: > > From: Andi Kleen <a...@linux.intel.com> > > > > Add a new mode to only print metrics. Sometimes we don't care about > > the raw values, just want the computed metrics. This allows more > > compact printing, so with -I each sample is only a single line. > > This also allows easier plotting and processing with other tools. > > > > The main target is with using --topdown, but it also works with > > -T and standard perf stat. A few metrics are not supported. > > > > To avoiding having to hardcode all the metrics in the code it uses > > a two pass approach: first compute dummy metrics and only > > print the headers in the print_metric callback. Then use the callback > > to print the actual values. > > > > There are some additional changes > > in the stat printout code to handle all metrics being on a single line. > > > > One issue is that the column code doesn't know in advance what events > > are not supported by the CPU, and it would be hard to find out > > as this could change based on dynamic conditions. That causes > > empty columns in some cases. > > > > The output can be fairly wide, often you may need more than 80 columns. > > > > Example: > > > > % perf stat -a -I 1000 --metric-only > > 1.001452803 frontend cycles idle insn per cycle stalled cycles > > per insn branch-misses of all branches > > 1.001452803 158.91% 0.66 2.39 > > 2.92% > > 2.002192321 180.63% 0.76 2.08 > > 2.96% > > 3.003088282 150.59% 0.62 2.57 > > 2.84% > > 4.004369835 196.20% 0.98 1.62 > > 3.79% > > 5.005227314 231.98% 0.84 1.90 > > 4.71% > > could you please align values with the headers
you addressed this in new version > > also I have same issue with the stalled cycles > being printed as empty in here: > > [jolsa@krava perf]$ sudo ./perf stat -a -I 1000 --metric-only > 1.000583845 insn per cycle stalled cycles per insn branch-misses > of all branches > 1.000583845 0.45 4.55% > > 2.001055181 0.86 4.06% > > 3.001262956 0.63 3.59% > but not this one.. jirka
