Messages in this thread | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCHES/RFC 1/5] perf bench uprobe + BPF skel | Date | Wed, 19 Jul 2023 17:49:05 -0300 |
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Hi,
This adds a 'perf bench' to test the overhead of uprobes + BPF programs, for now just a few simple tests, but I plan to make it possible to specify the functions to attach the uprobe + BPF, other BPF operations dealing with maps, etc.
This is how it looks like now:
[root@five ~]# perf bench uprobe all # Running uprobe/baseline benchmark... # Executed 1,000 usleep(1000) calls Total time: 1,053,963 usecs
1,053.963 usecs/op
# Running uprobe/empty benchmark... # Executed 1,000 usleep(1000) calls Total time: 1,056,293 usecs +2,330 to baseline
1,056.293 usecs/op 2.330 usecs/op to baseline
# Running uprobe/trace_printk benchmark... # Executed 1,000 usleep(1000) calls Total time: 1,056,977 usecs +3,014 to baseline +684 to previous
1,056.977 usecs/op 3.014 usecs/op to baseline 0.684 usecs/op to previous
[root@five ~]
I put it here:
https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/commit/?h=perf-bench-uprobe
git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git perf-bench-uprobe
Further ideas, problems?
- Arnaldo
Arnaldo Carvalho de Melo (5): perf bench uprobe: Add benchmark to test uprobe overhead perf bench uprobe: Print diff to baseline perf bench uprobe: Show diff to previous perf bench uprobe empty: Add entry attaching an empty BPF program perf bench uprobe trace_printk: Add entry attaching an BPF program that does a trace_printk
tools/perf/Documentation/perf-bench.txt | 3 + tools/perf/Makefile.perf | 1 + tools/perf/bench/Build | 1 + tools/perf/bench/bench.h | 3 + tools/perf/bench/uprobe.c | 198 ++++++++++++++++++++ tools/perf/builtin-bench.c | 8 + tools/perf/util/bpf_skel/bench_uprobe.bpf.c | 23 +++ 7 files changed, 237 insertions(+) create mode 100644 tools/perf/bench/uprobe.c create mode 100644 tools/perf/util/bpf_skel/bench_uprobe.bpf.c
-- 2.41.0
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