TAPSET::PERF(3stap)

NAME
tapset::perf - systemtap perf probe points

DESCRIPTION
This family of probe points is used to probe "perf events" on suitably configured kernels (2.6.33+). It contains a number of aliases for the ABI-specified event type/config tuples. The default sampling interval of the translator (1000000) is not overridden, so some of these probe points may fire very infrequently. Use the lower level perf.type(AA).config(BB).sample(CC) probe point if this is a problem.

perf.hw.*
    A variety of hardware events, as generalized by the kernel. These generally require running on bare hardware with selected processors. probe perf.hw.cpu_cycles probe perf.hw.instructions probe perf.hw.cache_references probe perf.hw.cache_misses probe perf.hw.branch_instructions probe perf.hw.branch_misses probe perf.hw.bus_cycles

perf.sw.*
    Special "software" events provided by the kernel. These sometimes work in virtualized environments and with more processor architectures. probe perf.sw.cpu_clock probe perf.sw.task_clock probe perf.sw.page_faults probe perf.sw.context_switches probe perf.sw.cpu_migrations probe perf.sw.page_faults_min probe perf.sw.page_faults_maj probe perf.sw.alignment_faults probe perf.sw.emulation_faults

perf.hw_cache.TYPE.ACCESS.RESULT
    Hardware cache events, where available. A subset of the following cartesian product may be available: probe perf.hw_cache.l1d.*.* probe perf.hw_cache.l1i.*.* probe perf.hw_cache.ll.*.* probe perf.hw_cache.dtlb.*.* probe perf.hw_cache.itlb.*.* probe perf.hw_cache.bpu.*.* probe perf.hw_cache.*.read.* probe perf.hw_cache.*.write.* probe perf.hw_cache.*.prefetch.* probe perf.hw_cache.*.*.access probe perf.hw_cache.*.*.miss

SEE ALSO
stap(1), stapprobes(3stap)