[ 3322.779063] stap_2a947ce1834191849aaaf60530b5d2_334817 (group.stap): systemtap: 4.7/0.187, base: ffffffffc0e26000, memory: 260data/52text/0ctx/16486net/134alloc kb, probes: 32 [ 3322.779445] Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1