kernel/tools/power/x86/turbostat/turbostat.8
.. .. @@ -294,6 +294,8 @@ 294 294 295 295 # chmod +r /dev/cpu/*/msr 296 296 297 +# chmod +r /dev/cpu_dma_latency298 +297 299 .B "turbostat " 298 300 reads hardware counters, but doesn't write them. 299 301 So it will not interfere with the OS or other programs, including