Hi, I ran into a problem trying to group events in perf record while in pipe mode. If I do:
$ perf record --group -e '{cycles, instructions}' -o - | perf report
-i - --group
I do not get the profiles grouped together. Instead I get two profiles.
Looking at the code in util/header.c I see that a bunch of features and not
supported in pipe mode (synthesized method). It is not clear to me why.
Clearly grouping should be supported. This is a very commonly used mode.
Am I missing something?
Thanks.
