#!/bin/bash # Disable frequency scaling for i in $(seq "$(nproc)") ; do sudo cat /sys/devices/system/cpu/cpu$((i-1))/cpufreq/scaling_max_freq | sudo tee /sys/devices/system/cpu/cpu$((i-1))/cpufreq/scaling_min_freq >/dev/null ; done cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=clang++ -G Ninja -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_CXX_FLAGS=-DNVALGRIND > /dev/null cmake --build build > /dev/null cat << 'EOF' A data structure for optimistic concurrency control on ranges of bitwise-lexicographically-ordered keys. Intended as an alternative to FoundationDB's skip list. Hardware for all benchmarks is an AMD Ryzen 9 7900 with (2x32GB) 5600MT/s CL28-34-34-89 1.35V RAM. ```` $ clang++ --version EOF clang++ --version cat << 'EOF' ``` # Microbenchmark ## Skip list EOF LD_LIBRARY_PATH=build/skip_list build/conflict_set_bench cat << 'EOF' ## Radix tree (this implementation) EOF LD_LIBRARY_PATH=build/radix_tree build/conflict_set_bench cat << 'EOF' # "Real data" test Point queries only. Gc ratio is the ratio of time spent doing garbage collection to time spent adding writes or doing garbage collection. Lower is better. ## skip list ``` EOF LD_LIBRARY_PATH=build/skip_list build/real_data_bench ~/Downloads/quotes_2008-08.txt cat << 'EOF' ``` ## radix tree ``` EOF LD_LIBRARY_PATH=build/radix_tree build/real_data_bench ~/Downloads/quotes_2008-08.txt cat << 'EOF' ``` ## hash table (The hash table implementation doesn't work on range queries, and its purpose is to provide an idea of how fast point queries can be) ``` EOF LD_LIBRARY_PATH=build/hash_table build/real_data_bench ~/Downloads/quotes_2008-08.txt cat << 'EOF' ``` EOF