smhasher/doc/crc32_hw

--- Testing crc32_hw "SSE4.2 crc32 in HW"

[[[ Sanity Tests ]]]

Verification value 0x0C7346F0 : PASS
Running sanity check 1    ..........PASS
Running AppendedZeroesTest..........PASS

[[[ Speed Tests ]]]

Bulk speed test - 262144-byte keys
Alignment  7 -  2.691 bytes/cycle - 7698.61 MiB/sec @ 3 ghz
Alignment  6 -  2.689 bytes/cycle - 7694.14 MiB/sec @ 3 ghz
Alignment  5 -  2.719 bytes/cycle - 7777.94 MiB/sec @ 3 ghz
Alignment  4 -  2.788 bytes/cycle - 7975.63 MiB/sec @ 3 ghz
Alignment  3 -  2.720 bytes/cycle - 7782.57 MiB/sec @ 3 ghz
Alignment  2 -  2.693 bytes/cycle - 7703.58 MiB/sec @ 3 ghz
Alignment  1 -  2.659 bytes/cycle - 7607.61 MiB/sec @ 3 ghz
Alignment  0 -  2.666 bytes/cycle - 7627.47 MiB/sec @ 3 ghz
Average      -  2.703 bytes/cycle - 7733.44 MiB/sec @ 3 ghz

Small key speed test -    1-byte keys -    30.64 cycles/hash
Small key speed test -    2-byte keys -    32.25 cycles/hash
Small key speed test -    3-byte keys -    36.17 cycles/hash
Small key speed test -    4-byte keys -    34.32 cycles/hash
Small key speed test -    5-byte keys -    34.77 cycles/hash
Small key speed test -    6-byte keys -    40.21 cycles/hash
Small key speed test -    7-byte keys -    43.91 cycles/hash
Small key speed test -    8-byte keys -    33.72 cycles/hash
Small key speed test -    9-byte keys -    37.69 cycles/hash
Small key speed test -   10-byte keys -    40.19 cycles/hash
Small key speed test -   11-byte keys -    44.38 cycles/hash
Small key speed test -   12-byte keys -    40.84 cycles/hash
Small key speed test -   13-byte keys -    46.16 cycles/hash
Small key speed test -   14-byte keys -    49.14 cycles/hash
Small key speed test -   15-byte keys -    52.69 cycles/hash
Small key speed test -   16-byte keys -    35.02 cycles/hash
Small key speed test -   17-byte keys -    38.35 cycles/hash
Small key speed test -   18-byte keys -    40.36 cycles/hash
Small key speed test -   19-byte keys -    47.23 cycles/hash
Small key speed test -   20-byte keys -    44.23 cycles/hash
Small key speed test -   21-byte keys -    47.76 cycles/hash
Small key speed test -   22-byte keys -    52.20 cycles/hash
Small key speed test -   23-byte keys -    55.95 cycles/hash
Small key speed test -   24-byte keys -    37.27 cycles/hash
Small key speed test -   25-byte keys -    42.42 cycles/hash
Small key speed test -   26-byte keys -    44.36 cycles/hash
Small key speed test -   27-byte keys -    49.90 cycles/hash
Small key speed test -   28-byte keys -    48.70 cycles/hash
Small key speed test -   29-byte keys -    53.76 cycles/hash
Small key speed test -   30-byte keys -    55.47 cycles/hash
Small key speed test -   31-byte keys -    57.77 cycles/hash
Average                                    43.478 cycles/hash

[[[ Differential Tests ]]]

Testing 8303632 up-to-5-bit differentials in 64-bit keys -> 32 bit hashes.
1000 reps, 8303632000 total tests, expecting 1.93 random collisions..........
0 total collisions, of which 0 single collisions were ignored

Testing 11017632 up-to-4-bit differentials in 128-bit keys -> 32 bit hashes.
1000 reps, 11017632000 total tests, expecting 2.57 random collisions..........
0 total collisions, of which 0 single collisions were ignored

Testing 2796416 up-to-3-bit differentials in 256-bit keys -> 32 bit hashes.
1000 reps, 2796416000 total tests, expecting 0.65 random collisions..........
0 total collisions, of which 0 single collisions were ignored


[[[ Avalanche Tests ]]]

Testing  32-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing  40-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing  48-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing  56-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing  64-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing  72-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing  80-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing  88-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing  96-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing 104-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing 112-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing 120-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing 128-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing 136-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing 144-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
Testing 152-bit keys ->  32-bit hashes,   300000 reps.......... worst bias is 100.000000% !!!!! 
*********FAIL*********

[[[ Keyset 'Cyclic' Tests ]]]

Keyset 'Cyclic' - 8 cycles of 4 bytes - 10000000 keys
Testing collisions   - Expected 11641.53, actual 11913.00 ( 1.02x)
Testing distribution - Worst bias is the  20-bit window at bit  21 - 0.029%

Keyset 'Cyclic' - 8 cycles of 5 bytes - 10000000 keys
Testing collisions   - Expected 11641.53, actual 23120.00 ( 1.99x)
Testing distribution - Worst bias is the  20-bit window at bit   5 - 0.028%

Keyset 'Cyclic' - 8 cycles of 6 bytes - 10000000 keys
Testing collisions   - Expected 11641.53, actual 23054.00 ( 1.98x)
Testing distribution - Worst bias is the  20-bit window at bit   4 - 0.042%

Keyset 'Cyclic' - 8 cycles of 7 bytes - 10000000 keys
Testing collisions   - Expected 11641.53, actual 23078.00 ( 1.98x)
Testing distribution - Worst bias is the  20-bit window at bit  27 - 0.023%

Keyset 'Cyclic' - 8 cycles of 8 bytes - 10000000 keys
Testing collisions   - Expected 11641.53, actual 23361.00 ( 2.01x) !!!!! 
Testing distribution - Worst bias is the  20-bit window at bit  31 - 0.043%

*********FAIL*********

[[[ Keyset 'TwoBytes' Tests ]]]

Keyset 'TwoBytes' - up-to-4-byte keys, 652545 total keys
Testing collisions   - Expected    49.57, actual     4.00 ( 0.08x)
Testing distribution - Worst bias is the  16-bit window at bit  29 - 5.497% !!!!! 

Keyset 'TwoBytes' - up-to-8-byte keys, 5471025 total keys
Testing collisions   - Expected  3484.56, actual  7075.00 ( 2.03x) !!!!! 
Testing distribution - Worst bias is the  20-bit window at bit  29 - 5.149% !!!!! 

Keyset 'TwoBytes' - up-to-12-byte keys, 18616785 total keys
Testing collisions   - Expected 40347.77, actual 41972.00 ( 1.04x)
Testing distribution - Worst bias is the  20-bit window at bit   4 - 0.962%

Keyset 'TwoBytes' - up-to-16-byte keys, 44251425 total keys
Testing collisions   - Expected 227963.15, actual 227401.00 ( 1.00x)
Testing distribution - Worst bias is the  20-bit window at bit   4 - 0.309%

Keyset 'TwoBytes' - up-to-20-byte keys, 86536545 total keys
Testing collisions   - Expected 871784.70, actual 1073946.00 ( 1.23x)
Testing distribution - Worst bias is the  20-bit window at bit   6 - 0.232%

*********FAIL*********

[[[ Keyset 'Sparse' Tests ]]]

Keyset 'Sparse' - 32-bit keys with up to 6 bits set - 1149017 keys
Testing collisions   - Expected   153.70, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  17-bit window at bit   2 - 13.377% !!!!! 

Keyset 'Sparse' - 40-bit keys with up to 6 bits set - 4598479 keys
Testing collisions   - Expected  2461.72, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  17-bit window at bit  18 - 1.878% !!!!! 

Keyset 'Sparse' - 48-bit keys with up to 5 bits set - 1925357 keys
Testing collisions   - Expected   431.55, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  14-bit window at bit  26 - 0.347%

Keyset 'Sparse' - 56-bit keys with up to 5 bits set - 4216423 keys
Testing collisions   - Expected  2069.66, actual   756.00 ( 0.37x)
Testing distribution - Worst bias is the  15-bit window at bit   7 - 0.068%

Keyset 'Sparse' - 64-bit keys with up to 5 bits set - 8303633 keys
Testing collisions   - Expected  8026.87, actual  6804.00 ( 0.85x)
Testing distribution - Worst bias is the  20-bit window at bit   8 - 0.254%

Keyset 'Sparse' - 96-bit keys with up to 4 bits set - 3469497 keys
Testing collisions   - Expected  1401.34, actual  1610.00 ( 1.15x)
Testing distribution - Worst bias is the  17-bit window at bit   0 - 0.118%

Keyset 'Sparse' - 256-bit keys with up to 3 bits set - 2796417 keys
Testing collisions   - Expected   910.36, actual   930.00 ( 1.02x)
Testing distribution - Worst bias is the  18-bit window at bit  11 - 0.196%

Keyset 'Sparse' - 2048-bit keys with up to 2 bits set - 2098177 keys
Testing collisions   - Expected   512.50, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  18-bit window at bit   8 - 0.069%


[[[ Keyset 'Combination Lowbits' Tests ]]]

Keyset 'Combination' - up to 8 blocks from a set of 8 - 19173960 keys
Testing collisions   - Expected 42799.01, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  20-bit window at bit  26 - 35.517% !!!!! 


[[[ Keyset 'Combination Highbits' Tests ]]]

Keyset 'Combination' - up to 8 blocks from a set of 8 - 19173960 keys
Testing collisions   - Expected 42799.01, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  20-bit window at bit  19 - 46.955% !!!!! 


[[[ Keyset 'Combination 0x8000000' Tests ]]]

Keyset 'Combination' - up to 20 blocks from a set of 2 - 2097150 keys
Testing collisions   - Expected   512.00, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  18-bit window at bit  28 - 34.742% !!!!! 


[[[ Keyset 'Combination 0x0000001' Tests ]]]

Keyset 'Combination' - up to 20 blocks from a set of 2 - 2097150 keys
Testing collisions   - Expected   512.00, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  18-bit window at bit  19 - 62.692% !!!!! 


[[[ Keyset 'Combination Hi-Lo' Tests ]]]

Keyset 'Combination' - up to 6 blocks from a set of 15 - 12204240 keys
Testing collisions   - Expected 17339.30, actual 17230.00 ( 0.99x)
Testing distribution - Worst bias is the  18-bit window at bit  22 - 2.022% !!!!! 


[[[ Keyset 'Window' Tests ]]]

Keyset 'Windowed' -  64-bit key,  20-bit window - 64 tests, 1048576 keys per test
Window at   0 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   1 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   2 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   3 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   4 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   5 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   6 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   7 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   8 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at   9 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  10 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  11 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  12 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  13 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  14 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  15 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  16 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  17 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  18 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  19 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  20 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  21 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  22 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  23 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  24 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  25 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  26 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  27 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  28 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  29 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  30 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  31 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  32 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  33 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  34 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  35 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  36 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  37 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  38 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  39 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  40 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  41 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  42 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  43 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  44 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  45 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  46 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  47 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  48 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  49 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  50 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  51 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  52 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  53 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  54 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  55 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  56 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  57 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  58 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  59 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  60 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  61 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  62 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  63 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)
Window at  64 - Testing collisions   - Expected   128.00, actual     0.00 ( 0.00x)

[[[ Keyset 'Text' Tests ]]]

Keyset 'Text' - keys of form "Foo[XXXX]Bar" - 14776336 keys
Testing collisions   - Expected 25418.13, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  20-bit window at bit   8 - 9.411% !!!!! 

Keyset 'Text' - keys of form "FooBar[XXXX]" - 14776336 keys
Testing collisions   - Expected 25418.13, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  20-bit window at bit  17 - 49.433% !!!!! 

Keyset 'Text' - keys of form "[XXXX]FooBar" - 14776336 keys
Testing collisions   - Expected 25418.13, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  19-bit window at bit   4 - 31.935% !!!!! 


[[[ Keyset 'Zeroes' Tests ]]]

Keyset 'Zeroes' - 65536 keys
Testing collisions   - Expected     0.50, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  13-bit window at bit  19 - 0.366%


[[[ Keyset 'Seed' Tests ]]]

Keyset 'Seed' - 1000000 keys
Testing collisions   - Expected   116.42, actual     0.00 ( 0.00x)
Testing distribution - Worst bias is the  15-bit window at bit  23 - 74.794% !!!!! 



Input vcode 0xf303ebcf, Output vcode 0xe0965bb7, Result vcode 0x00000001
Verification value is 0x00000001 - Testing took 1728.720685 seconds