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So that the perf report won't lost the cpu utilization information.
For example, if there're two process that have same name.
$ perf report --stdio --showcpuutilization -s pid
[SNIP]
# Overhead sys us Command: Pid
# ........ ........ ........ .............
#
55.12% 0.01% 55.10% noploop:28781
44.88% 0.06% 44.83% noploop:28782
Before:
$ perf report --stdio --showcpuutilization -s comm
[SNIP]
# Overhead sys us
# ........ ........ ........
#
100.00% 0.06% 44.83%
After:
$ perf report --stdio --showcpuutilization -s comm
[SNIP]
# Overhead sys us
# ........ ........ ........
#
100.00% 0.07% 99.93%
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arun Sharma <asharma@fb.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1348645663-25303-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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| .. | ||
| firewire | ||
| hv | ||
| include/tools | ||
| lguest | ||
| lib/traceevent | ||
| nfsd | ||
| perf | ||
| power | ||
| scripts | ||
| testing | ||
| usb | ||
| virtio | ||
| vm | ||
| Makefile | ||