[ 4286.477776] stap_ca1535ab98df7fc99282bb8b624a93_671080 (group.stap): systemtap: 4.8/0.188, base: ffffffffc1121000, memory: 76data/52text/0ctx/16486net/132alloc kb, probes: 32 [ 4286.478693] Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1