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Perf tool on K2X EVM

Frangline
Intellectual 2735 points

hi,

Could you please let me know if the "perf" tools is supported on K2X EVM (Linux on ARM). When I try, I get the following message - with few of the options not supported.

root@keystone-evm:~# perf stat -B dd if=/dev/zero of=/dev/null count=1000000

1000000+0 records in

1000000+0 records out

 Performance counter stats for 'dd if=/dev/zero of=/dev/null count=1000000':

        2429.612371 task-clock                #    0.987 CPUs utilized

                 5 context-switches          #    0.002 K/sec

                 0 cpu-migrations            #    0.000 K/sec

               124 page-faults               #    0.051 K/sec

   <not supported> cycles

   <not supported> stalled-cycles-frontend

   <not supported> stalled-cycles-backend

   <not supported> instructions

   <not supported> branches

   <not supported> branch-misses

 

       2.461498328 seconds time elapsed

 

root@keystone-evm:~#

  • 0
    TI__Guru 50170 points

    Frangline,

    Perf should be supported but may not be all events. The only 2 shown not supported on my Rev 2.0 EVM are stalled-cycle-frontend and stalled-cycle-backend. The rest do show up running the same command as yours.

    Rex