Perf Data Parser failed - Qt Creator

[shreya_agrawal]

When I try to run the Performance Analyzer, I get this error message:

The Perf data parser failed to process all the samples. Your trace is incomplete. The exit code was 4.

I am using Performance Analyzer in Qt for the first time, so any help would be great.

Qt Version: 5.12.9
Perf Version: 5.15.131
OS Version: Ubuntu 22.04.3 LTS

[shreya_agrawal]

@shreya_agrawal
The issue was solved. Follow these steps:
Add this line in the /etc/sysctl.conf file and then save the file:

kernel.perf_event_paranoid = -1

Earlier, the perf_event_paranoid was set to 4, which was the cause of the error.

-1: Allow use of (almost) all events by all users
0: Disallow raw and ftrace function tracepoint access
1: Disallow CPU event access
2: Disallow kernel profiling

Then, apply the changes by running the following command:

sudo sysctl -p