Can you check how the processor performance goes during the run ?
I just executed turbostat manually, like it was in your config file. Looks like the processor performance works as expected - the output clearly shows the point where I started/stopped a single-threaded t/io_uring run. The machine has 128 cores, so a Busy% of 0.78 is exactly one core. # turbostat -c package -qS --interval 5 -s Busy%,Bzy_MHz,Avg_MHz,CorWatt,PkgWatt,RAMWatt,PkgTmp Avg_MHz Busy% Bzy_MHz CorWatt PkgWatt 0 0.01 1500 0.01 68.91 0 0.01 1641 0.01 68.90 0 0.01 1621 0.01 68.91 0 0.03 1561 0.03 68.91 0 0.03 1547 0.02 68.93 0 0.01 1500 0.01 68.91 0 0.01 1657 0.01 68.89 26 0.78 3322 3.58 74.58 26 0.79 3328 3.63 74.72 26 0.79 3331 3.63 74.79 26 0.79 3321 3.66 74.87 26 0.79 3329 3.64 74.88 26 0.79 3328 3.65 74.92 26 0.79 3334 3.62 74.92 26 0.79 3329 3.62 74.94 23 0.69 3331 3.17 74.25 0 0.01 1664 0.00 69.12 0 0.01 1501 0.01 69.12 0 0.02 1566 0.01 69.10 0 0.00 1499 0.00 69.07 1 0.06 1558 0.04 69.10 Best regards, Hans-Peter
