X rio localhost timings (performance governor, C-states enabled)

; NEO/py log to no-log:
$ ./benchstat-neopy-lognolog 20171106-time-rio-Cenabled.txt
name                                    old µs/object  new µs/object  delta
dataset:wczblk1-8
rio/neo/py/sqlite/zhash.py                   304 ± 6%       291 ± 2%     ~     (p=0.056 n=5+5)
rio/neo/py/sqlite/zhash.py-P16             2.19k ± 0%     2.01k ± 2%   -8.20%  (p=0.000 n=13+16)
rio/neo/py/sqlite/zhash.go                   248 ± 1%       231 ± 1%   -7.19%  (p=0.008 n=5+5)
rio/neo/py/sqlite/zhash.go+prefetch128       125 ± 1%       110 ± 2%  -11.57%  (p=0.008 n=5+5)
rio/neo/py/sqlite/zhash.go-P16             1.76k ±13%     1.62k ± 7%   -8.06%  (p=0.015 n=16+16)
rio/neo/py/sql/zhash.py                      325 ± 4%       313 ± 4%     ~     (p=0.114 n=4+4)
rio/neo/py/sql/zhash.py-P16                2.88k ± 1%     2.56k ± 1%  -11.05%  (p=0.000 n=15+15)
rio/neo/py/sql/zhash.go                      275 ± 2%       258 ± 1%   -6.03%  (p=0.008 n=5+5)
rio/neo/py/sql/zhash.go+prefetch128          154 ± 3%       139 ± 1%   -9.29%  (p=0.008 n=5+5)
rio/neo/py/sql/zhash.go-P16                2.30k ± 8%     2.21k ± 5%     ~     (p=0.072 n=16+16)
dataset:prod1-1024
rio/neo/py/sqlite/zhash.py                   269 ± 1%       259 ± 4%   -3.49%  (p=0.032 n=5+5)
rio/neo/py/sqlite/zhash.py-P16             2.19k ± 0%     1.89k ± 1%  -13.62%  (p=0.000 n=16+15)
rio/neo/py/sqlite/zhash.go                   158 ± 1%       142 ± 1%  -10.36%  (p=0.008 n=5+5)
rio/neo/py/sqlite/zhash.go+prefetch128       116 ± 3%       101 ± 2%  -13.22%  (p=0.008 n=5+5)
rio/neo/py/sqlite/zhash.go-P16             1.90k ± 0%     1.57k ± 0%  -17.14%  (p=0.000 n=14+13)
rio/neo/py/sql/zhash.py                      337 ±43%       293 ± 4%     ~     (p=0.286 n=5+4)
rio/neo/py/sql/zhash.py-P16                2.73k ± 0%     2.47k ± 0%   -9.45%  (p=0.000 n=15+15)
rio/neo/py/sql/zhash.go                      186 ± 3%       168 ± 1%   -9.39%  (p=0.008 n=5+5)
rio/neo/py/sql/zhash.go+prefetch128          145 ± 2%       130 ± 2%  -10.24%  (p=0.008 n=5+5)
rio/neo/py/sql/zhash.go-P16                2.29k ± 6%     2.08k ± 3%   -9.20%  (p=0.000 n=16+16)

--------

; Full summary
$ benchstat -split dataset 20171106-time-rio-Cenabled.txt
name                                          pystone/s
rio/pystone                                    178k ± 2%

name                                          µs/op
rio/sha1/py/1024B                              1.40 ± 0%
rio/sha1/go/1024B                              1.79 ± 1%
rio/sha1/py/4096B                              5.08 ± 2%
rio/sha1/go/4096B                              7.14 ± 0%

name                                          us/op
rio/disk/randread/direct/4K-min                34.0 ± 1%
rio/disk/randread/direct/4K-avg                92.9 ± 0%

name                                          time/op
rio/disk/randread/pagecache/4K-min            221ns ± 0%
rio/disk/randread/pagecache/4K-avg            637ns ± 0%

name                                          µs/object
dataset:wczblk1-8
rio/fs1/zhash.py                               22.3 ± 2%
rio/fs1/zhash.py-P16                           51.7 ±72%
rio/fs1/zhash.go                               2.40 ± 0%
rio/fs1/zhash.go+prefetch128                   4.34 ± 8%
rio/fs1/zhash.go-P16                           3.58 ±24%
rio/zeo/zhash.py                                336 ± 2%
rio/zeo/zhash.py-P16                          1.61k ±19%
rio/neo/py/sqlite/zhash.py                      304 ± 6%
rio/neo/py/sqlite/zhash.py-P16                2.19k ± 0%
rio/neo/py/sqlite/zhash.go                      248 ± 1%
rio/neo/py/sqlite/zhash.go+prefetch128          125 ± 1%
rio/neo/py/sqlite/zhash.go-P16                1.76k ±13%
rio/neo/py(!log)/sqlite/zhash.py                291 ± 2%
rio/neo/py(!log)/sqlite/zhash.py-P16          2.01k ± 2%
rio/neo/py(!log)/sqlite/zhash.go                231 ± 1%
rio/neo/py(!log)/sqlite/zhash.go+prefetch128    110 ± 2%
rio/neo/py(!log)/sqlite/zhash.go-P16          1.62k ± 7%
rio/neo/py/sql/zhash.py                         325 ± 4%
rio/neo/py/sql/zhash.py-P16                   2.88k ± 1%
rio/neo/py/sql/zhash.go                         275 ± 2%
rio/neo/py/sql/zhash.go+prefetch128             154 ± 3%
rio/neo/py/sql/zhash.go-P16                   2.30k ± 8%
rio/neo/py(!log)/sql/zhash.py                   313 ± 4%
rio/neo/py(!log)/sql/zhash.py-P16             2.56k ± 1%
rio/neo/py(!log)/sql/zhash.go                   258 ± 1%
rio/neo/py(!log)/sql/zhash.go+prefetch128       139 ± 1%
rio/neo/py(!log)/sql/zhash.go-P16             2.21k ± 5%
rio/neo/go/zhash.py                             190 ± 3%
rio/neo/go/zhash.py-P16                         784 ± 9%
rio/neo/go/zhash.go                            52.0 ± 1%
rio/neo/go/zhash.go+prefetch128                26.6 ± 5%
rio/neo/go/zhash.go-P16                         256 ± 6%
rio/neo/go(!sha1)/zhash.go                     35.3 ± 4%
rio/neo/go(!sha1)/zhash.go+prefetch128         17.3 ± 2%
rio/neo/go(!sha1)/zhash.go-P16                  152 ±13%
dataset:prod1-1024
rio/fs1/zhash.py                               18.9 ± 1%
rio/fs1/zhash.py-P16                           58.0 ±52%
rio/fs1/zhash.go                               1.30 ± 0%
rio/fs1/zhash.go+prefetch128                   2.78 ±14%
rio/fs1/zhash.go-P16                           2.21 ± 9%
rio/zeo/zhash.py                                302 ± 7%
rio/zeo/zhash.py-P16                          1.44k ±11%
rio/neo/py/sqlite/zhash.py                      269 ± 1%
rio/neo/py/sqlite/zhash.py-P16                2.19k ± 0%
rio/neo/py/sqlite/zhash.go                      158 ± 1%
rio/neo/py/sqlite/zhash.go+prefetch128          116 ± 3%
rio/neo/py/sqlite/zhash.go-P16                1.90k ± 0%
rio/neo/py(!log)/sqlite/zhash.py                259 ± 4%
rio/neo/py(!log)/sqlite/zhash.py-P16          1.89k ± 1%
rio/neo/py(!log)/sqlite/zhash.go                142 ± 1%
rio/neo/py(!log)/sqlite/zhash.go+prefetch128    101 ± 2%
rio/neo/py(!log)/sqlite/zhash.go-P16          1.57k ± 0%
rio/neo/py/sql/zhash.py                         337 ±43%
rio/neo/py/sql/zhash.py-P16                   2.73k ± 0%
rio/neo/py/sql/zhash.go                         186 ± 3%
rio/neo/py/sql/zhash.go+prefetch128             145 ± 2%
rio/neo/py/sql/zhash.go-P16                   2.29k ± 6%
rio/neo/py(!log)/sql/zhash.py                   293 ± 4%
rio/neo/py(!log)/sql/zhash.py-P16             2.47k ± 0%
rio/neo/py(!log)/sql/zhash.go                   168 ± 1%
rio/neo/py(!log)/sql/zhash.go+prefetch128       130 ± 2%
rio/neo/py(!log)/sql/zhash.go-P16             2.08k ± 3%
rio/neo/go/zhash.py                             181 ± 5%
rio/neo/go/zhash.py-P16                         714 ± 6%
rio/neo/go/zhash.go                            36.9 ± 3%
rio/neo/go/zhash.go+prefetch128                16.5 ± 1%
rio/neo/go/zhash.go-P16                         239 ± 4%
rio/neo/go(!sha1)/zhash.go                     32.7 ± 7%
rio/neo/go(!sha1)/zhash.go+prefetch128         13.5 ± 1%
rio/neo/go(!sha1)/zhash.go-P16                  190 ± 7%