This benchmark measures the time spent in the dynamic linker to load a large set
of shared objects with many symbols and relocations. It mimics the work involved
in loading a fixed version of libandroid_servers.so
.
To run the benchmark, build the linker-reloc-bench
target, sync data
, and
run the benchmark from /data/benchmarktest[64]/linker-reloc-bench
.
There is also a run_bench_with_ninja.sh
script that uses the
gen_bench.py --ninja
mode to generate a benchmark. It's useful for
experimentation. The --cc
and --linker
flags allow swapping out different
static and dynamic linkers.
regen/dump_relocs.py
scans an ELF file and its dependencies, outputting a JSON
dump, then regen/gen_bench.py
processes the JSON file into benchmark code.
gen_bench.py
has two modes:
--ninja
: generate a build.ninja instead, and build a set of ELF file
outputs