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Optimization done:
Replace CellStorageStat "seen" std::map with boost::unordered_flat_set (boc.h/.cpp)
Benefit:
Total time (only passed valid tests): -15%
Total CPU time (only passed valid tests): -17%
Notes:
I've checked several benchmarks:
https://jacksonallan.github.io/c_cpp_hash_tables_benchmark/
https://github.com/ktprime/emhash/tree/master/bench
https://martin.ankerl.com/2022/08/27/hashmap-bench-01/
Tried several hashtables in action (emhash, robin_set, hopscotch, unordered_flat_set) and boost::unordered_flat_set occured to be a winner
Replace CellStorageStat "seen" std::map with boost::unordered_flat_set (boc.h/.cpp)
Benefit:
Total time (only passed valid tests): -15%
Total CPU time (only passed valid tests): -17%
Notes:
I've checked several benchmarks:
https://jacksonallan.github.io/c_cpp_hash_tables_benchmark/
https://github.com/ktprime/emhash/tree/master/bench
https://martin.ankerl.com/2022/08/27/hashmap-bench-01/
Tried several hashtables in action (emhash, robin_set, hopscotch, unordered_flat_set) and boost::unordered_flat_set occured to be a winner
Ubuntu
I added THE WHOLE boost to the patch( It's sufficient to have only boost/core and boost/unordered
Ubuntu
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