[Vtune] Failes to profile even with paranoid = -1 or 0

[alexcp]

Attempting to profile a program using vtune via command line results on the following failure:

Error:
Access to performance monitoring and observability operations is limited.
Consider adjusting /proc/sys/kernel/perf_event_paranoid setting to open
access to performance monitoring and observability operations for processes
without CAP_PERFMON, CAP_SYS_PTRACE or CAP_SYS_ADMIN Linux capability.
More information can be found at 'Perf events and tool security' document:
https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html
perf_event_paranoid setting is 0:
  -1: Allow use of (almost) all events by all users
      Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK
>= 0: Disallow raw and ftrace function tracepoint access
>= 1: Disallow CPU event access
>= 2: Disallow kernel profiling
To make the adjusted perf_event_paranoid setting permanent preserve it
in /etc/sysctl.conf (e.g. kernel.perf_event_paranoid = <setting>)

vtune: Collection failed.
vtune: Internal Error

[JaideepK_Intel]

Hi,

Thank you for posting in Intel communities.

To understand your issue better, could you please provide the below details?

• If you are using an older version of vtune please upgrade it to 2023.1 (also check the OS you are using supported https://www.intel.com/content/www/us/en/developer/articles/system-requirements/vtune-profiler-system-requirements.html)
• Can you please tell me the name of the operating system and processor details you are using? (If Linux, please specify the distribution like Centos7,8, Ubuntu18,20, etc)
• Are you facing this issue with the matrix sample application too? (<vtune installation path>samples/en/C++/matrix), if not attach a sample reproducer and screenshots. so we can reproduce your issue from our end.
• Check the output for /proc/sys/kernel/perf_event_paranoid is set as -1
• Please attach self-checker logs by running the below command.

<Vtune_installation_directory\latest\bin64\vtune-self-checker.bat> for windows.

<Vtune_installation_directory\latest\bin64\vtune-self-checker.sh> for linux.

Thanks,

Jaideep

[JaideepK_Intel]

Hi,

Could you please provide the details which are mentioned above?

Thanks,

Jaideep

[JaideepK_Intel]

Hi,

We have not heard back from you. This thread will no longer be monitored by Intel. If you need further assistance, please post a new question.

Thanks,

Jaideep