mirror of
https://github.com/boostorg/boost_unordered_benchmarks.git
synced 2026-02-02 08:42:12 +00:00
Boost.Unordered aggregate benchmarks
Benchmarks
Aggregated benchmarks simulating real-life scenarios, provided as part of Boost.Unordered source code.
Detailed results
Folder
gcc-x64: GCC 11, x64clang-x64: Clang 12, x64vs-x64: Visual Studio 2019, x64clang-arm64: Clang 12 ARM64gcc-x86: GCC 11, x86clang-x86: Clang 12, x86vs-x86: Visual Studio 2019, x86
Summary results
GCC 11, x64
string.cpp
std::unordered_map: 32559 ms, 271711224 bytes in 3999509 allocations
boost::unordered_map: 23524 ms, 245453904 bytes in 3999510 allocations
boost::unordered_flat_map: 12939 ms, 322961400 bytes in 1 allocations
ankerl::unordered_dense::map: 10152 ms, 234881024 bytes in 2 allocations
absl::node_hash_map: 12795 ms, 235477800 bytes in 3999509 allocations
absl::flat_hash_map: 12374 ms, 343932904 bytes in 1 allocations
std::unordered_map, FNV-1a: 35880 ms, 271711224 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 25951 ms, 245453904 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 14659 ms, 322961400 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 18169 ms, 234881024 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 17790 ms, 235477800 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 16592 ms, 343932904 bytes in 1 allocations
string_view.cpp
std::unordered_map: 31195 ms, 207719096 bytes in 3999509 allocations
boost::unordered_map: 24115 ms, 181461776 bytes in 3999510 allocations
boost::unordered_flat_map: 12270 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 10150 ms, 167772160 bytes in 2 allocations
absl::node_hash_map: 12433 ms, 171485672 bytes in 3999509 allocations
absl::flat_hash_map: 11405 ms, 209715192 bytes in 1 allocations
std::unordered_map, FNV-1a: 34319 ms, 207719096 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 27104 ms, 181461776 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 13954 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 17617 ms, 167772160 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 17482 ms, 171485672 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 16240 ms, 209715192 bytes in 1 allocations
uint32.cpp
std::unordered_map: 11408 ms, 192888392 bytes in 5996681 allocations
boost::unordered_map: 9892 ms, 149424400 bytes in 5996682 allocations
boost::unordered_flat_map: 4957 ms, 71303176 bytes in 1 allocations
ankerl::unordered_dense::map: 8035 ms, 134217728 bytes in 2 allocations
absl::node_hash_map: 8765 ms, 123470920 bytes in 5996681 allocations
absl::flat_hash_map: 6118 ms, 75497480 bytes in 1 allocations
uint64.cpp
std::unordered_map: 12188 ms, 240941512 bytes in 6000001 allocations
boost::unordered_map: 10177 ms, 197477520 bytes in 6000002 allocations
boost::unordered_flat_map: 5123 ms, 134217728 bytes in 1 allocations
ankerl::unordered_dense::map: 8158 ms, 201326592 bytes in 2 allocations
absl::node_hash_map: 8831 ms, 171497480 bytes in 6000001 allocations
absl::flat_hash_map: 6472 ms, 142606336 bytes in 1 allocations
uuid.cpp
std::unordered_map: 31742 ms, 288941512 bytes in 6000001 allocations
boost::unordered_map: 26188 ms, 245477520 bytes in 6000002 allocations
boost::unordered_flat_map: 10893 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 16122 ms, 268435456 bytes in 2 allocations
absl::node_hash_map: 14684 ms, 219497480 bytes in 6000001 allocations
absl::flat_hash_map: 12187 ms, 209715192 bytes in 1 allocations
word_count.cpp
std::unordered_map: 28534 ms, 68323424 bytes in 1418656 allocations
boost::unordered_map: 21509 ms, 58766384 bytes in 1418657 allocations
boost::unordered_flat_map: 12282 ms, 49283064 bytes in 1 allocations
ankerl::unordered_dense::map: 14080 ms, 67108864 bytes in 2 allocations
absl::node_hash_map: 13545 ms, 52922096 bytes in 1418656 allocations
absl::flat_hash_map: 11631 ms, 52428792 bytes in 1 allocations
std::unordered_map, FNV-1a: 27971 ms, 68323424 bytes in 1418656 allocations
boost::unordered_map, FNV-1a: 20302 ms, 58766384 bytes in 1418657 allocations
boost::unordered_flat_map, FNV-1a: 11902 ms, 49283064 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 25344 ms, 67108864 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 14085 ms, 52922096 bytes in 1418656 allocations
absl::flat_hash_map, FNV-1a: 12069 ms, 52428792 bytes in 1 allocations
word_size.cpp
std::unordered_map: 1294 ms, 3728 bytes in 114 allocations
boost::unordered_map: 702 ms, 4392 bytes in 115 allocations
boost::unordered_flat_map: 816 ms, 4096 bytes in 1 allocations
ankerl::unordered_dense::map: 616 ms, 4096 bytes in 2 allocations
absl::node_hash_map: 610 ms, 4120 bytes in 114 allocations
absl::flat_hash_map: 539 ms, 4352 bytes in 1 allocations
Clang 12, x64
string.cpp
std::unordered_map: 37225 ms, 271711224 bytes in 3999509 allocations
boost::unordered_map: 27933 ms, 245453904 bytes in 3999510 allocations
boost::unordered_flat_map: 15000 ms, 322961400 bytes in 1 allocations
ankerl::unordered_dense::map: 13599 ms, 234881024 bytes in 2 allocations
absl::node_hash_map: 16200 ms, 235477800 bytes in 3999509 allocations
absl::flat_hash_map: 15993 ms, 343932904 bytes in 1 allocations
std::unordered_map, FNV-1a: 39247 ms, 271711224 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 26734 ms, 245453904 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 14723 ms, 322961400 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 18564 ms, 234881024 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 18922 ms, 235477800 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 17845 ms, 343932904 bytes in 1 allocations
string_view.cpp
std::unordered_map: 35382 ms, 207719096 bytes in 3999509 allocations
boost::unordered_map: 27909 ms, 181461776 bytes in 3999510 allocations
boost::unordered_flat_map: 13728 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 13116 ms, 167772160 bytes in 2 allocations
absl::node_hash_map: 15882 ms, 171485672 bytes in 3999509 allocations
absl::flat_hash_map: 14761 ms, 209715192 bytes in 1 allocations
std::unordered_map, FNV-1a: 35960 ms, 207719096 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 27461 ms, 181461776 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 13702 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 18262 ms, 167772160 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 18572 ms, 171485672 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 17011 ms, 209715192 bytes in 1 allocations
uint32.cpp
std::unordered_map: 13066 ms, 192888392 bytes in 5996681 allocations
boost::unordered_map: 10760 ms, 149424400 bytes in 5996682 allocations
boost::unordered_flat_map: 5353 ms, 71303176 bytes in 1 allocations
ankerl::unordered_dense::map: 8397 ms, 134217728 bytes in 2 allocations
absl::node_hash_map: 9882 ms, 123470920 bytes in 5996681 allocations
absl::flat_hash_map: 6691 ms, 75497480 bytes in 1 allocations
uint64.cpp
std::unordered_map: 14900 ms, 240941512 bytes in 6000001 allocations
boost::unordered_map: 11167 ms, 197477520 bytes in 6000002 allocations
boost::unordered_flat_map: 5838 ms, 134217728 bytes in 1 allocations
ankerl::unordered_dense::map: 8553 ms, 201326592 bytes in 2 allocations
absl::node_hash_map: 10396 ms, 171497480 bytes in 6000001 allocations
absl::flat_hash_map: 7382 ms, 142606336 bytes in 1 allocations
uuid.cpp
std::unordered_map: 34555 ms, 288941512 bytes in 6000001 allocations
boost::unordered_map: 28886 ms, 245477520 bytes in 6000002 allocations
boost::unordered_flat_map: 11120 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 16453 ms, 268435456 bytes in 2 allocations
absl::node_hash_map: 16342 ms, 219497480 bytes in 6000001 allocations
absl::flat_hash_map: 13093 ms, 209715192 bytes in 1 allocations
word_count.cpp
std::unordered_map: 32174 ms, 68323424 bytes in 1418656 allocations
boost::unordered_map: 24261 ms, 58766384 bytes in 1418657 allocations
boost::unordered_flat_map: 12802 ms, 49283064 bytes in 1 allocations
ankerl::unordered_dense::map: 16944 ms, 67108864 bytes in 2 allocations
absl::node_hash_map: 16971 ms, 52922096 bytes in 1418656 allocations
absl::flat_hash_map: 14462 ms, 52428792 bytes in 1 allocations
std::unordered_map, FNV-1a: 29372 ms, 68323424 bytes in 1418656 allocations
boost::unordered_map, FNV-1a: 23499 ms, 58766384 bytes in 1418657 allocations
boost::unordered_flat_map, FNV-1a: 13048 ms, 49283064 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 26777 ms, 67108864 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 17014 ms, 52922096 bytes in 1418656 allocations
absl::flat_hash_map, FNV-1a: 14652 ms, 52428792 bytes in 1 allocations
word_size.cpp
std::unordered_map: 1419 ms, 3728 bytes in 114 allocations
boost::unordered_map: 1023 ms, 4392 bytes in 115 allocations
boost::unordered_flat_map: 897 ms, 4096 bytes in 1 allocations
ankerl::unordered_dense::map: 888 ms, 4096 bytes in 2 allocations
absl::node_hash_map: 982 ms, 4120 bytes in 114 allocations
absl::flat_hash_map: 646 ms, 4352 bytes in 1 allocations
Visual Studio 2019, x64
string.cpp
std::unordered_map: 39980 ms, 291081368 bytes in 3999510 allocations
boost::unordered_map: 41547 ms, 245453904 bytes in 3999510 allocations
boost::unordered_flat_map: 27291 ms, 322961400 bytes in 1 allocations
ankerl::unordered_dense::map: 17835 ms, 279707224 bytes in 2 allocations
absl::node_hash_map: 30580 ms, 235477800 bytes in 3999509 allocations
absl::flat_hash_map: 31535 ms, 343932904 bytes in 1 allocations
std::unordered_map, FNV-1a: 38391 ms, 291081368 bytes in 3999510 allocations
boost::unordered_map, FNV-1a: 39210 ms, 245453904 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 24398 ms, 322961400 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 23684 ms, 279707224 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 30544 ms, 235477800 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 31198 ms, 343932904 bytes in 1 allocations
string_view.cpp
std::unordered_map: 35965 ms, 227089224 bytes in 3999510 allocations
boost::unordered_map: 42080 ms, 181461776 bytes in 3999510 allocations
boost::unordered_flat_map: 24998 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 17498 ms, 194667880 bytes in 2 allocations
absl::node_hash_map: 31470 ms, 171485672 bytes in 3999509 allocations
absl::flat_hash_map: 29928 ms, 209715192 bytes in 1 allocations
std::unordered_map, FNV-1a: 35285 ms, 227089224 bytes in 3999510 allocations
boost::unordered_map, FNV-1a: 39381 ms, 181461776 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 22082 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 22468 ms, 194667880 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 30855 ms, 171485672 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 28738 ms, 209715192 bytes in 1 allocations
uint32.cpp
std::unordered_map: 22589 ms, 278138072 bytes in 5996682 allocations
boost::unordered_map: 20202 ms, 149424400 bytes in 5996682 allocations
boost::unordered_flat_map: 11528 ms, 71303176 bytes in 1 allocations
ankerl::unordered_dense::map: 13454 ms, 130888368 bytes in 2 allocations
absl::node_hash_map: 18012 ms, 123470920 bytes in 5996681 allocations
absl::flat_hash_map: 13321 ms, 75497480 bytes in 1 allocations
uint64.cpp
std::unordered_map: 27792 ms, 326217760 bytes in 6000002 allocations
boost::unordered_map: 20125 ms, 197477520 bytes in 6000002 allocations
boost::unordered_flat_map: 13194 ms, 134217728 bytes in 1 allocations
ankerl::unordered_dense::map: 12271 ms, 194667872 bytes in 2 allocations
absl::node_hash_map: 19441 ms, 171497480 bytes in 6000001 allocations
absl::flat_hash_map: 15868 ms, 142606336 bytes in 1 allocations
uuid.cpp
std::unordered_map: 30707 ms, 374217768 bytes in 6000002 allocations
boost::unordered_map: 42278 ms, 245477520 bytes in 6000002 allocations
boost::unordered_flat_map: 16331 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 21113 ms, 258447376 bytes in 2 allocations
absl::node_hash_map: 30507 ms, 219497480 bytes in 6000001 allocations
absl::flat_hash_map: 27223 ms, 209715192 bytes in 1 allocations
word_count.cpp
std::unordered_map: 36037 ms, 90300672 bytes in 1418657 allocations
boost::unordered_map: 43230 ms, 58766384 bytes in 1418657 allocations
boost::unordered_flat_map: 26298 ms, 49283064 bytes in 1 allocations
ankerl::unordered_dense::map: 27895 ms, 54572488 bytes in 2 allocations
absl::node_hash_map: 43878 ms, 52922096 bytes in 1418656 allocations
absl::flat_hash_map: 36514 ms, 52428792 bytes in 1 allocations
std::unordered_map, FNV-1a: 33923 ms, 90300672 bytes in 1418657 allocations
boost::unordered_map, FNV-1a: 39936 ms, 58766384 bytes in 1418657 allocations
boost::unordered_flat_map, FNV-1a: 23076 ms, 49283064 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 43271 ms, 54572488 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 33896 ms, 52922096 bytes in 1418656 allocations
absl::flat_hash_map, FNV-1a: 27410 ms, 52428792 bytes in 1 allocations
word_size.cpp
std::unordered_map: 1269 ms, 11840 bytes in 115 allocations
boost::unordered_map: 2678 ms, 4392 bytes in 115 allocations
boost::unordered_flat_map: 1763 ms, 4096 bytes in 1 allocations
ankerl::unordered_dense::map: 1158 ms, 4304 bytes in 2 allocations
absl::node_hash_map: 2478 ms, 4120 bytes in 114 allocations
absl::flat_hash_map: 2322 ms, 4352 bytes in 1 allocations
Clang 12, ARM64
string.cpp
std::unordered_map: 16419 ms, 244656248 bytes in 3999509 allocations
boost::unordered_map: 14821 ms, 213457840 bytes in 3999510 allocations
boost::unordered_flat_map: 7518 ms, 260046848 bytes in 1 allocations
ankerl::unordered_dense::map: 7376 ms, 201326592 bytes in 2 allocations
absl::node_hash_map: 8835 ms, 203481728 bytes in 3999509 allocations
absl::flat_hash_map: 8147 ms, 276824040 bytes in 1 allocations
std::unordered_map, FNV-1a: 22039 ms, 244656248 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 16747 ms, 213457840 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 9187 ms, 260046848 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 11395 ms, 201326592 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 10003 ms, 203481728 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 9438 ms, 276824040 bytes in 1 allocations
string_view.cpp
std::unordered_map: 14251 ms, 212660184 bytes in 3999509 allocations
boost::unordered_map: 13474 ms, 181461776 bytes in 3999510 allocations
boost::unordered_flat_map: 6404 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 6676 ms, 167772160 bytes in 2 allocations
absl::node_hash_map: 8532 ms, 171485664 bytes in 3999509 allocations
absl::flat_hash_map: 7629 ms, 209715184 bytes in 1 allocations
std::unordered_map, FNV-1a: 20255 ms, 212660184 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 15648 ms, 181461776 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 7872 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 10553 ms, 167772160 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 8980 ms, 171485664 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 8133 ms, 209715184 bytes in 1 allocations
uint32.cpp
std::unordered_map: 7945 ms, 196600184 bytes in 5996681 allocations
boost::unordered_map: 4693 ms, 149424400 bytes in 5996682 allocations
boost::unordered_flat_map: 2120 ms, 71303176 bytes in 1 allocations
ankerl::unordered_dense::map: 4140 ms, 134217728 bytes in 2 allocations
absl::node_hash_map: 3759 ms, 123470912 bytes in 5996681 allocations
absl::flat_hash_map: 2568 ms, 75497472 bytes in 1 allocations
uint64.cpp
std::unordered_map: 7760 ms, 244679864 bytes in 6000001 allocations
boost::unordered_map: 5114 ms, 197477520 bytes in 6000002 allocations
boost::unordered_flat_map: 2117 ms, 134217728 bytes in 1 allocations
ankerl::unordered_dense::map: 3656 ms, 201326592 bytes in 2 allocations
absl::node_hash_map: 4037 ms, 171497472 bytes in 6000001 allocations
absl::flat_hash_map: 3145 ms, 142606328 bytes in 1 allocations
uuid.cpp
std::unordered_map: 15199 ms, 292679864 bytes in 6000001 allocations
boost::unordered_map: 12532 ms, 245477520 bytes in 6000002 allocations
boost::unordered_flat_map: 4118 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 7682 ms, 268435456 bytes in 2 allocations
absl::node_hash_map: 5907 ms, 219497472 bytes in 6000001 allocations
absl::flat_hash_map: 5060 ms, 209715184 bytes in 1 allocations
word_count.cpp
std::unordered_map: 21942 ms, 69916096 bytes in 1418656 allocations
boost::unordered_map: 24650 ms, 58766384 bytes in 1418657 allocations
boost::unordered_flat_map: 17676 ms, 49283064 bytes in 1 allocations
ankerl::unordered_dense::map: 23997 ms, 67108864 bytes in 2 allocations
absl::node_hash_map: 23572 ms, 52922088 bytes in 1418656 allocations
absl::flat_hash_map: 23233 ms, 52428784 bytes in 1 allocations
std::unordered_map, FNV-1a: 29519 ms, 69916096 bytes in 1418656 allocations
boost::unordered_map, FNV-1a: 27646 ms, 58766384 bytes in 1418657 allocations
boost::unordered_flat_map, FNV-1a: 18240 ms, 49283064 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 35918 ms, 67108864 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 20314 ms, 52922088 bytes in 1418656 allocations
absl::flat_hash_map, FNV-1a: 21957 ms, 52428784 bytes in 1 allocations
word_size.cpp
std::unordered_map: 988 ms, 5192 bytes in 114 allocations
boost::unordered_map: 1576 ms, 4392 bytes in 115 allocations
boost::unordered_flat_map: 1345 ms, 4096 bytes in 1 allocations
ankerl::unordered_dense::map: 1322 ms, 4096 bytes in 2 allocations
absl::node_hash_map: 1151 ms, 4112 bytes in 114 allocations
absl::flat_hash_map: 1171 ms, 4344 bytes in 1 allocations
GCC 11, x86
string.cpp
std::unordered_map: 31655 ms, 167851676 bytes in 3999509 allocations
boost::unordered_map: 23197 ms, 156295880 bytes in 3999510 allocations
boost::unordered_flat_map: 15858 ms, 228589564 bytes in 1 allocations
ankerl::unordered_dense::map: 25852 ms, 184549376 bytes in 2 allocations
absl::node_hash_map: 17470 ms, 153929268 bytes in 3999509 allocations
absl::flat_hash_map: 17152 ms, 243269612 bytes in 1 allocations
std::unordered_map, FNV-1a: 35029 ms, 167851676 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 26416 ms, 156295880 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 17552 ms, 228589564 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 20198 ms, 184549376 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 18220 ms, 153929268 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 18080 ms, 243269612 bytes in 1 allocations
string_view.cpp
std::unordered_map: 28940 ms, 103859548 bytes in 3999509 allocations
boost::unordered_map: 23245 ms, 92303752 bytes in 3999510 allocations
boost::unordered_flat_map: 15452 ms, 102760452 bytes in 1 allocations
ankerl::unordered_dense::map: 25111 ms, 117440512 bytes in 2 allocations
absl::node_hash_map: 17272 ms, 89937140 bytes in 3999509 allocations
absl::flat_hash_map: 16664 ms, 109051900 bytes in 1 allocations
std::unordered_map, FNV-1a: 32802 ms, 103859548 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 26708 ms, 92303752 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 16805 ms, 102760452 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 19896 ms, 117440512 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 17884 ms, 89937140 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 17167 ms, 109051900 bytes in 1 allocations
uint32.cpp
std::unordered_map: 11587 ms, 120430916 bytes in 5996681 allocations
boost::unordered_map: 11720 ms, 100271784 bytes in 5996682 allocations
boost::unordered_flat_map: 9079 ms, 71303176 bytes in 1 allocations
ankerl::unordered_dense::map: 12948 ms, 134217728 bytes in 2 allocations
absl::node_hash_map: 14298 ms, 89916484 bytes in 5996681 allocations
absl::flat_hash_map: 12130 ms, 75497472 bytes in 1 allocations
uint64.cpp
boost::unordered_map: 18558 ms, 148311624 bytes in 6000002 allocations
boost::unordered_flat_map: 11368 ms, 134217728 bytes in 1 allocations
ankerl::unordered_dense::map: 18018 ms, 201326592 bytes in 2 allocations
absl::node_hash_map: 15414 ms, 137943044 bytes in 6000001 allocations
absl::flat_hash_map: 13492 ms, 142606328 bytes in 1 allocations
uuid.cpp
std::unordered_map: 35326 ms, 216470756 bytes in 6000001 allocations
boost::unordered_map: 31482 ms, 196311624 bytes in 6000002 allocations
boost::unordered_flat_map: 16670 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 21305 ms, 268435456 bytes in 2 allocations
absl::node_hash_map: 20801 ms, 185943044 bytes in 6000001 allocations
absl::flat_hash_map: 19190 ms, 209715184 bytes in 1 allocations
word_count.cpp
std::unordered_map: 2016 ms, 9931428 bytes in 354033 allocations
boost::unordered_map: 1980 ms, 7434104 bytes in 354034 allocations
boost::unordered_flat_map: 1352 ms, 6422532 bytes in 1 allocations
ankerl::unordered_dense::map: 1867 ms, 10485760 bytes in 2 allocations
absl::node_hash_map: 1589 ms, 6869828 bytes in 354033 allocations
absl::flat_hash_map: 1492 ms, 6815740 bytes in 1 allocations
std::unordered_map, FNV-1a: 1805 ms, 9931428 bytes in 354033 allocations
boost::unordered_map, FNV-1a: 1870 ms, 7434104 bytes in 354034 allocations
boost::unordered_flat_map, FNV-1a: 1234 ms, 6422532 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 1499 ms, 10485760 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 1463 ms, 6869828 bytes in 354033 allocations
absl::flat_hash_map, FNV-1a: 1366 ms, 6815740 bytes in 1 allocations
word_size.cpp
std::unordered_map: 106 ms, 932 bytes in 59 allocations
boost::unordered_map: 107 ms, 1152 bytes in 60 allocations
boost::unordered_flat_map: 126 ms, 1096 bytes in 1 allocations
ankerl::unordered_dense::map: 162 ms, 1536 bytes in 2 allocations
absl::node_hash_map: 154 ms, 1108 bytes in 59 allocations
absl::flat_hash_map: 141 ms, 1152 bytes in 1 allocations
Clang 12, x86
string.cpp
std::unordered_map: 36678 ms, 167851676 bytes in 3999509 allocations
boost::unordered_map: 25230 ms, 156295880 bytes in 3999510 allocations
boost::unordered_flat_map: 18225 ms, 228589564 bytes in 1 allocations
ankerl::unordered_dense::map: 22673 ms, 184549376 bytes in 2 allocations
absl::node_hash_map: 22367 ms, 153929268 bytes in 3999509 allocations
absl::flat_hash_map: 22335 ms, 243269612 bytes in 1 allocations
std::unordered_map, FNV-1a: 36651 ms, 167851676 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 28313 ms, 156295880 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 17408 ms, 228589564 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 22896 ms, 184549376 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 20714 ms, 153929268 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 20319 ms, 243269612 bytes in 1 allocations
string_view.cpp
std::unordered_map: 31374 ms, 103859548 bytes in 3999509 allocations
boost::unordered_map: 23481 ms, 92303752 bytes in 3999510 allocations
boost::unordered_flat_map: 15515 ms, 102760452 bytes in 1 allocations
ankerl::unordered_dense::map: 20171 ms, 117440512 bytes in 2 allocations
absl::node_hash_map: 20708 ms, 89937140 bytes in 3999509 allocations
absl::flat_hash_map: 20420 ms, 109051900 bytes in 1 allocations
std::unordered_map, FNV-1a: 31299 ms, 103859548 bytes in 3999509 allocations
boost::unordered_map, FNV-1a: 22983 ms, 92303752 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 15757 ms, 102760452 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 20187 ms, 117440512 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 19019 ms, 89937140 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 18762 ms, 109051900 bytes in 1 allocations
uint32.cpp
std::unordered_map: 10982 ms, 120430916 bytes in 5996681 allocations
boost::unordered_map: 9981 ms, 100271784 bytes in 5996682 allocations
boost::unordered_flat_map: 8876 ms, 71303176 bytes in 1 allocations
ankerl::unordered_dense::map: 10475 ms, 134217728 bytes in 2 allocations
absl::node_hash_map: 13269 ms, 89916484 bytes in 5996681 allocations
absl::flat_hash_map: 11469 ms, 75497472 bytes in 1 allocations
uint64.cpp
boost::unordered_map: 17499 ms, 148311624 bytes in 6000002 allocations
boost::unordered_flat_map: 12161 ms, 134217728 bytes in 1 allocations
ankerl::unordered_dense::map: 20539 ms, 201326592 bytes in 2 allocations
absl::node_hash_map: 14873 ms, 137943044 bytes in 6000001 allocations
absl::flat_hash_map: 13369 ms, 142606328 bytes in 1 allocations
uuid.cpp
std::unordered_map: 43714 ms, 216470756 bytes in 6000001 allocations
boost::unordered_map: 36960 ms, 196311624 bytes in 6000002 allocations
boost::unordered_flat_map: 18086 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 24071 ms, 268435456 bytes in 2 allocations
absl::node_hash_map: 24765 ms, 185943044 bytes in 6000001 allocations
absl::flat_hash_map: 23603 ms, 209715184 bytes in 1 allocations
word_count.cpp
std::unordered_map: 2194 ms, 9931428 bytes in 354033 allocations
boost::unordered_map: 2079 ms, 7434104 bytes in 354034 allocations
boost::unordered_flat_map: 1372 ms, 6422532 bytes in 1 allocations
ankerl::unordered_dense::map: 2087 ms, 10485760 bytes in 2 allocations
absl::node_hash_map: 1979 ms, 6869828 bytes in 354033 allocations
absl::flat_hash_map: 1862 ms, 6815740 bytes in 1 allocations
std::unordered_map, FNV-1a: 1842 ms, 9931428 bytes in 354033 allocations
boost::unordered_map, FNV-1a: 2008 ms, 7434104 bytes in 354034 allocations
boost::unordered_flat_map, FNV-1a: 1285 ms, 6422532 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 1695 ms, 10485760 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 1667 ms, 6869828 bytes in 354033 allocations
absl::flat_hash_map, FNV-1a: 1635 ms, 6815740 bytes in 1 allocations
word_size.cpp
std::unordered_map: 106 ms, 932 bytes in 59 allocations
boost::unordered_map: 150 ms, 1152 bytes in 60 allocations
boost::unordered_flat_map: 131 ms, 1096 bytes in 1 allocations
ankerl::unordered_dense::map: 182 ms, 1536 bytes in 2 allocations
absl::node_hash_map: 188 ms, 1108 bytes in 59 allocations
absl::flat_hash_map: 127 ms, 1152 bytes in 1 allocations
Visual Studio 2019, x86
string.cpp
std::unordered_map: 37595 ms, 177536756 bytes in 3999510 allocations
boost::unordered_map: 38328 ms, 156295880 bytes in 3999510 allocations
boost::unordered_flat_map: 26042 ms, 228589564 bytes in 1 allocations
ankerl::unordered_dense::map: 31555 ms, 215927716 bytes in 2 allocations
absl::node_hash_map: 33204 ms, 153929276 bytes in 3999509 allocations
absl::flat_hash_map: 34382 ms, 243269620 bytes in 1 allocations
std::unordered_map, FNV-1a: 36042 ms, 177536756 bytes in 3999510 allocations
boost::unordered_map, FNV-1a: 35880 ms, 156295880 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 23834 ms, 228589564 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 24017 ms, 215927716 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 28204 ms, 153929276 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 29805 ms, 243269620 bytes in 1 allocations
string_view.cpp
std::unordered_map: 33237 ms, 113544612 bytes in 3999510 allocations
boost::unordered_map: 35329 ms, 92303752 bytes in 3999510 allocations
boost::unordered_flat_map: 22180 ms, 102760452 bytes in 1 allocations
ankerl::unordered_dense::map: 29647 ms, 130888372 bytes in 2 allocations
absl::node_hash_map: 31407 ms, 89937148 bytes in 3999509 allocations
absl::flat_hash_map: 29250 ms, 109051908 bytes in 1 allocations
std::unordered_map, FNV-1a: 32529 ms, 113544612 bytes in 3999510 allocations
boost::unordered_map, FNV-1a: 34102 ms, 92303752 bytes in 3999510 allocations
boost::unordered_flat_map, FNV-1a: 21912 ms, 102760452 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 22703 ms, 130888372 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 27286 ms, 89937148 bytes in 3999509 allocations
absl::flat_hash_map, FNV-1a: 25081 ms, 109051908 bytes in 1 allocations
uint32.cpp
std::unordered_map: 20033 ms, 163055760 bytes in 5996682 allocations
boost::unordered_map: 16562 ms, 100271784 bytes in 5996682 allocations
boost::unordered_flat_map: 10086 ms, 71303176 bytes in 1 allocations
ankerl::unordered_dense::map: 17911 ms, 130888368 bytes in 2 allocations
absl::node_hash_map: 18093 ms, 89916492 bytes in 5996681 allocations
absl::flat_hash_map: 13851 ms, 75497480 bytes in 1 allocations
uint64.cpp
std::unordered_map: 25856 ms, 211108888 bytes in 6000002 allocations
boost::unordered_map: 26465 ms, 172311624 bytes in 6000002 allocations
boost::unordered_flat_map: 12584 ms, 134217728 bytes in 1 allocations
ankerl::unordered_dense::map: 21805 ms, 194667872 bytes in 2 allocations
absl::node_hash_map: 21685 ms, 137943052 bytes in 6000001 allocations
absl::flat_hash_map: 19843 ms, 142606336 bytes in 1 allocations
uuid.cpp
std::unordered_map: 35992 ms, 259108896 bytes in 6000002 allocations
boost::unordered_map: 42091 ms, 220311624 bytes in 6000002 allocations
boost::unordered_flat_map: 22240 ms, 197132280 bytes in 1 allocations
ankerl::unordered_dense::map: 32796 ms, 258447376 bytes in 2 allocations
absl::node_hash_map: 39965 ms, 185943052 bytes in 6000001 allocations
absl::flat_hash_map: 39972 ms, 209715192 bytes in 1 allocations
word_count.cpp
std::unordered_map: 2651 ms, 11274964 bytes in 354034 allocations
boost::unordered_map: 3155 ms, 7434104 bytes in 354034 allocations
boost::unordered_flat_map: 1742 ms, 6422532 bytes in 1 allocations
ankerl::unordered_dense::map: 3979 ms, 9793612 bytes in 2 allocations
absl::node_hash_map: 2992 ms, 6869836 bytes in 354033 allocations
absl::flat_hash_map: 2686 ms, 6815748 bytes in 1 allocations
std::unordered_map, FNV-1a: 2676 ms, 11274964 bytes in 354034 allocations
boost::unordered_map, FNV-1a: 2932 ms, 7434104 bytes in 354034 allocations
boost::unordered_flat_map, FNV-1a: 1454 ms, 6422532 bytes in 1 allocations
ankerl::unordered_dense::map, FNV-1a: 2120 ms, 9793612 bytes in 2 allocations
absl::node_hash_map, FNV-1a: 2226 ms, 6869836 bytes in 354033 allocations
absl::flat_hash_map, FNV-1a: 1885 ms, 6815748 bytes in 1 allocations
word_size.cpp
std::unordered_map: 170 ms, 1456 bytes in 60 allocations
boost::unordered_map: 219 ms, 1152 bytes in 60 allocations
boost::unordered_flat_map: 95 ms, 1096 bytes in 1 allocations
ankerl::unordered_dense::map: 184 ms, 1528 bytes in 2 allocations
absl::node_hash_map: 153 ms, 1116 bytes in 59 allocations
absl::flat_hash_map: 164 ms, 1160 bytes in 1 allocations