Re: Intel Ivy Bridge "mem" events not working?

I also get this error when I test with the operf:

$ operf -e mem_uops_retired:2000000 ./convNaive2 0.5 5
Kernel profiling is not possible with current system config.
Set /proc/sys/kernel/kptr_restrict to 0 to collect kernel samples.
perf_event_open failed with Invalid argument
Caught runtime_error: Internal Error.  Perf event setup failed.
Error running profiler


-Panos

On Wed, Apr 6, 2016 at 6:46 PM, Panagiotis Mousouliotis <[email protected]>
wrote:

> Hello,
>
> I installed today oprofile cloning it from the git repository.
>
> When I give the command:
>
> $ ocount -e mem_uops_retired ./convNaive2 0.5 5
>
> I get:
>
> perf_event_open failed with Invalid argument
> Caught runtime error while setting up counters
> Internal Error.  Perf event setup failed.
> Error running ocount
>
> I get the same output for all the events starting with "mem".
>
> When I use events that do not start with "mem", it works:
> $ ocount -e l2_lines_out ./convNaive2 0.5 5
> 0.5,5,0.092632
>
> Events were actively counted for 227235819 nanoseconds.
> Event counts (actual) for
> /home/pmousoul/Desktop/Program_Execution_Performance_Measurement_Tools/code/convNaive2:
>     Event                Count                    % time counted
>     l2_lines_out         255,436                  100.00
>
> I'm I doing something wrong and I'm just not able to notice it?
>
> My system is:
> processor: i5-3337U
> kernel version: 3.16.0-67-generic x86_64 GNU/Linux
>
> I tried the oprofile-1.1.0 (tar.gz) version but I got the same results.
>
> Now I'm thinking to test an older kernel on the same machine..
>
> Any thoughts?
>
>
> Thanks for your time,
> Panos
>

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