06-01-2002
I am not so much experienced on device drivers but trying to develop one, basically on Streams. I always wish to have expertise people in my friends list for any discussion and deliberations.
Please acknowledge my humbel request to be a close colleague of me. We can discuss a lot via e-mails. Mail Me at
prasad@hmastarware.com
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LEARN ABOUT DEBIAN
tapset::perf
TAPSET::PERF(3stap) 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 proces-
sors.
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 archi-
tectures.
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)
IBM
TAPSET::PERF(3stap)