41f19708c8
The benchmark creates a set of DSOs that mimic the work involved in loading the current version of libandroid_servers.so. The synthetic benchmark has roughly the same number of libraries with roughly the same relocations. Currently, on a local aosp_walleye build that includes recent performance improvements (including the Neon-based CL I3983bca1dddc9241bb70290ad3651d895f046660), using the "performance" governor, the benchmark reports these scores: $ adb shell taskset 10 \ /data/benchmarktest64/linker-reloc-bench/linker-reloc-bench \ --benchmark_repetitions=20 --benchmark_display_aggregates_only=true ... -------------------------------------------------------------------------------- Benchmark Time CPU Iterations -------------------------------------------------------------------------------- BM_linker_relocation/real_time_mean 70048 us 465 us 20 BM_linker_relocation/real_time_median 70091 us 466 us 20 BM_linker_relocation/real_time_stddev 329 us 8.29 us 20 $ adb shell taskset 10 \ /data/benchmarktest/linker-reloc-bench/linker-reloc-bench \ --benchmark_repetitions=20 --benchmark_display_aggregates_only=true ... -------------------------------------------------------------------------------- Benchmark Time CPU Iterations -------------------------------------------------------------------------------- BM_linker_relocation/real_time_mean 83051 us 462 us 20 BM_linker_relocation/real_time_median 83069 us 464 us 20 BM_linker_relocation/real_time_stddev 184 us 8.91 us 20 Test: manual Bug: none Change-Id: I6dac66978f8666f95c76387093bda6be0151bfce |
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| .. | ||
| include | ||
| Android.bp | ||
| AndroidTest.xml | ||
| noop.cpp | ||
| spawn_benchmark.cpp | ||
| spawn_benchmarks.cpp | ||