On Sat, Oct 24, 2020 at 11:59:18AM +0900, Namhyung Kim wrote:
> To make the command line even more compact with cgroups, support regex
> pattern matching in cgroup names.
>
> $ perf stat -a -e cpu-clock,cycles --for-each-cgroup ^foo sleep 1
>
> 3,000.73 msec cpu-clock foo # 2.998 CPUs utilized
> 12,530,992,699 cycles foo # 7.517 GHz
> (100.00%)
> 1,000.61 msec cpu-clock foo/bar # 1.000 CPUs
> utilized
> 4,178,529,579 cycles foo/bar # 2.506 GHz
> (100.00%)
> 1,000.03 msec cpu-clock foo/baz # 0.999 CPUs
> utilized
> 4,176,104,315 cycles foo/baz # 2.505 GHz
> (100.00%)
just curious.. there was another foo/XXX group using the
rest of the cycles, right?
also perhaps we want to warn if there's no match found:
$ sudo ./perf stat -a -e cpu-clock,cycles --for-each-cgroup ^foo sleep 1
Performance counter stats for 'system wide':
1.002375575 seconds time elapsed
jirka
