Closed make-github-pseudonymous-again closed 4 years ago
Nothing to write home about on aarch64 for sure...
./xxhsum 0.7.4 by Yann Collet, compiled as 64-bit aarch64 + NEON little endian with Clang 9.0.1
Sample of 100 KB...
XXH32 : 102400 -> 28157 it/s ( 2749.7 MB/s)
XXH32 unaligned : 102400 -> 23081 it/s ( 2254.0 MB/s)
XXH64 : 102400 -> 31571 it/s ( 3083.1 MB/s)
XXH64 unaligned : 102400 -> 31668 it/s ( 3092.5 MB/s)
XXH3_64b : 102400 -> 61948 it/s ( 6049.7 MB/s)
XXH3_64b unaligned : 102400 -> 57711 it/s ( 5635.8 MB/s)
XXH3_64b w/seed : 102400 -> 61672 it/s ( 6022.7 MB/s)
XXH3_64b w/seed unaligned : 102400 -> 56974 it/s ( 5563.9 MB/s)
XXH3_64b w/secret : 102400 -> 58678 it/s ( 5730.3 MB/s)
XXH3_64b w/secret unaligned : 102400 -> 54466 it/s ( 5318.9 MB/s)
XXH128 : 102400 -> 51548 it/s ( 5033.9 MB/s)
XXH128 unaligned : 102400 -> 48912 it/s ( 4776.6 MB/s)
XXH128 w/seed : 102400 -> 52415 it/s ( 5118.7 MB/s)
XXH128 w/seed unaligned : 102400 -> 49660 it/s ( 4849.6 MB/s)
XXH128 w/secret : 102400 -> 49943 it/s ( 4877.2 MB/s)
XXH128 w/secret unaligned : 102400 -> 46412 it/s ( 4532.4 MB/s)
DiscoHash : 102400 -> 12382 it/s ( 1209.2 MB/s)
DiscoHash unaligned : 102400 -> 11626 it/s ( 1135.3 MB/s)
Well it seems to be affected by clang bug 42874, but fixing that only gets to 1.3 GB/s.
GCC 9 gets 1.4 GB/s.
Thanks for those comparisons! Discohash does not appear yet on https://rurban.github.io/smhasher/doc/table.html ... Although the source is there https://github.com/rurban/smhasher/blob/master/discohash.cpp ... Feel free to close the issue.
https://github.com/cris691/discohash