Messages in this thread | | | From | Eric Lin <> | Date | Tue, 18 Jan 2022 12:05:45 +0800 | Subject | About perf tool set exclude_guest = 1 on guest environment |
| |
Hi all,
Currently, I run the perf command 'perf record -e branches:u ls' and 'perf record -e branches ls'. It will set exclude_guest = 1 as below:
# perf record -e branches:u ls # perf evlist -v branches:u: .., exclude_kernel: 1, exclude_hv: 1,, exclude_guest: 1, ..
# perf record -e branches ls # perf evlist -v branches: ..., exclude_guest: 1, ...
As I understand it, set exclude_guest =1 will not include guest counting. May I ask if I run the above commands as a guest user, should the architecture implementation ignore this exclude_guest flags and still make perf can count guest events in Linux kernel?
Best regards, Eric Lin
| |