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Merge branch 'New benchmark for hashmap lookups'
Anton Protopopov says:
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Add a new benchmark for hashmap lookups and fix several typos.
In commit 3 I've patched the bench utility so that now command line options
can be reused by different benchmarks.
The benchmark itself is added in the last commit 7. I was using this benchmark
to test map lookup productivity when using a different hash function [1]. When
run with --quiet, the results can be easily plotted [2]. The results provided
by the benchmark look reasonable and match the results of my different
benchmarks (requiring to patch kernel to get actual statistics on map lookups).
Links:
[1] https://fosdem.org/2023/schedule/event/bpf_hashing/
[2] https://github.com/aspsk/bpf-bench/tree/master/hashmap-bench
Changes,
v1->v2:
- percpu_times_index[] is of wrong size (Martin)
- use base 0 for strtol (Andrii)
- just use -q without argument (Andrii)
- use less hacks when parsing arguments (Andrii)
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Signed-off-by: Andrii Nakryiko <andrii@kernel.org>