Description of problem: Hello, on the following aarch64 system https://beaker.engineering.redhat.com/view/armatura2.slevarna.tpb.lab.eng.brq.redhat.com#details CPU(s): 224 2x Cavium ThunderX2(R) CPU CN9975 v2.2 @ 2.0GHz https://en.wikichip.org/wiki/cavium/thunderx2/cn9975 we observe the poor performance of the trace-cmd record command on RHEL-8. It's slower by factor 2.5x compared to RHEL-9: RHEL-8.6.0-20211121.1 4.18.0-350.el8.aarch64 $ time trace-cmd record --quiet -e sched:sched_move_numa sleep 0.1 real 0m26.354s user 0m0.178s sys 0m0.188s RHEL-9.0.0-20211213.3 5.14.0-29.el9.aarch64 $ time trace-cmd record --quiet -e sched:sched_move_numa sleep 0.1 real 0m10.697s user 0m0.418s sys 0m0.324s On x86_64, trace-cmd record performance on RHEL-8 is OK: RHEL-8.6.0-20211121.1 4.18.0-350.el8.x86_64 128 CPUs https://beaker.engineering.redhat.com/view/amd-epyc2-rome-7502-2s.lab.eng.brq.redhat.com#details $ time trace-cmd record --quiet -e sched:sched_move_numa sleep 0.1 real 0m4.062s user 0m0.028s sys 0m0.214s It seems that only aarch64 is affected. Could you please investigate the problem and check if we can reach the same performance of trace-cmd record as on RHEL-9? Thanks a lot! Jirka
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release. Therefore, it is being closed. If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.