Compared to 0ed7b1fc there should not be a difference (checked only on
serial cases with manually ediging 20180221-deco-noturbo-noz.txt-fix to
use updated output format for wczblk1-8 dataset):

$ benchstat -split node,cluster,dataset 20180221-deco-noturbo-noz.txt-fix 20180305-deco-noturbo-c.txt
name                                      old pystone/s    new pystone/s    delta
node:deco
pystone                                         221k ± 0%        219k ± 3%     ~     (p=0.690 n=5+5)

name                                      old time/op      new time/op      delta
node:deco
sha1/py/1K                                    1.85µs ± 2%      1.84µs ± 1%     ~     (p=0.508 n=5+5)
sha1/go/1K                                    1.53µs ± 0%      1.53µs ± 0%     ~     (p=0.103 n=5+5)
sha1/py/4K                                    6.68µs ± 1%      6.69µs ± 0%     ~     (p=0.151 n=5+5)
sha1/go/4K                                    5.59µs ± 0%      5.59µs ± 0%     ~     (p=0.333 n=5+5)
sha1/py/2M                                    3.18ms ± 0%      3.18ms ± 0%     ~     (p=0.421 n=5+5)
sha1/go/2M                                    2.78ms ± 0%      2.78ms ± 0%     ~     (p=1.000 n=5+5)
unzlib/py/null-1K                             2.81µs ± 0%      2.91µs ± 3%   +3.49%  (p=0.008 n=5+5)
unzlib/go/null-1K                             2.86µs ± 0%      2.88µs ± 1%   +0.93%  (p=0.008 n=5+5)
unzlib/py/null-4K                             11.3µs ± 1%      11.4µs ± 2%   +0.89%  (p=0.040 n=5+5)
unzlib/go/null-4K                             11.3µs ± 0%      11.4µs ± 0%   +0.89%  (p=0.008 n=5+5)
unzlib/py/null-2M                             5.71ms ± 5%      5.66ms ± 3%     ~     (p=1.000 n=5+5)
unzlib/go/null-2M                             4.79ms ± 0%      4.79ms ± 0%     ~     (p=0.095 n=5+5)
unzlib/py/prod1-avg                           5.02µs ± 1%      5.06µs ± 0%     ~     (p=0.057 n=4+4)
unzlib/go/prod1-avg                           5.27µs ± 1%      5.33µs ± 1%     ~     (p=0.087 n=5+5)
unzlib/py/prod1-max                            512µs ± 2%       438µs ± 5%  -14.45%  (p=0.008 n=5+5)
unzlib/go/prod1-max                            336µs ± 0%       352µs ± 4%   +4.67%  (p=0.008 n=5+5)
disk/randread/direct/4K-min                    105µs ± 1%       105µs ± 0%     ~     (p=1.000 n=5+5)
disk/randread/direct/4K-avg                    144µs ± 0%       142µs ± 0%   -1.54%  (p=0.008 n=5+5)
disk/randread/direct/2M-min                   5.48ms ± 3%      5.34ms ± 3%     ~     (p=0.135 n=5+5)
disk/randread/direct/2M-avg                   6.13ms ± 1%      6.04ms ± 2%     ~     (p=0.056 n=5+5)
disk/randread/pagecache/4K-min                 570ns ± 1%       583ns ± 1%   +2.28%  (p=0.008 n=5+5)
disk/randread/pagecache/4K-avg                 975ns ± 0%      1003ns ± 1%   +2.91%  (p=0.008 n=5+5)
disk/randread/pagecache/2M-min                 195µs ± 4%       197µs ± 4%     ~     (p=0.690 n=5+5)
disk/randread/pagecache/2M-avg                 214µs ± 0%       220µs ± 1%   +2.80%  (p=0.008 n=5+5)

name                                      old time/object  new time/object  delta
cluster:deco dataset:wczblk1-8
fs1-zhash.py                                  20.3µs ± 1%      20.2µs ± 1%     ~     (p=0.444 n=5+4)
fs1-zhash.go                                  3.20µs ± 0%      3.20µs ± 0%     ~     (all equal)
fs1-zhash.go+prefetch128                      4.16µs ± 4%      4.14µs ± 6%     ~     (p=0.952 n=5+5)
zeo/py/fs1-zhash.py                            375µs ± 4%       379µs ± 3%     ~     (p=0.690 n=5+5)
neo/py/sqlite-zhash.py                         355µs ± 6%       362µs ± 6%     ~     (p=0.421 n=5+5)
neo/py/sqlite-zhash.go                         156µs ± 2%       158µs ± 1%     ~     (p=0.151 n=5+5)
neo/py/sqlite-zhash.go+prefetch128             134µs ± 2%       135µs ± 1%     ~     (p=0.421 n=5+5)
neo/py(!log)/sqlite-zhash.py                   326µs ± 3%       335µs ± 4%     ~     (p=0.381 n=5+5)
neo/py(!log)/sqlite-zhash.go                   143µs ± 3%       145µs ± 2%     ~     (p=0.508 n=5+5)
neo/py(!log)/sqlite-zhash.go+prefetch128       119µs ± 2%       118µs ± 1%     ~     (p=0.421 n=5+5)
neo/py/sql-zhash.py                            466µs ±45%       392µs ± 5%     ~     (p=0.111 n=5+4)
neo/py/sql-zhash.go                            201µs ± 2%       197µs ± 1%   -1.63%  (p=0.008 n=5+5)
neo/py/sql-zhash.go+prefetch128                184µs ± 2%       180µs ± 2%   -1.96%  (p=0.032 n=5+5)
neo/py(!log)/sql-zhash.py                      375µs ± 2%       454µs ±61%     ~     (p=0.286 n=4+5)
neo/py(!log)/sql-zhash.go                      182µs ± 2%       183µs ± 1%     ~     (p=0.802 n=5+5)
neo/py(!log)/sql-zhash.go+prefetch128          164µs ± 1%       164µs ± 2%     ~     (p=0.881 n=5+5)
neo/go/fs1-zhash.py                            226µs ± 1%       227µs ± 2%     ~     (p=0.397 n=5+5)
neo/go/fs1-zhash.go                           56.8µs ± 1%      56.9µs ± 1%     ~     (p=0.889 n=5+5)
neo/go/fs1-zhash.go+prefetch128               24.8µs ± 3%      24.7µs ± 2%     ~     (p=0.651 n=5+5)
neo/go/sqlite-zhash.py                         264µs ± 4%       269µs ± 1%     ~     (p=0.548 n=5+5)
neo/go/sqlite-zhash.go                        93.5µs ± 0%      92.7µs ± 0%   -0.83%  (p=0.008 n=5+5)
neo/go/sqlite-zhash.go+prefetch128            39.3µs ± 4%      39.8µs ± 8%     ~     (p=0.952 n=5+5)

( not sure what it was for unzlib/py/prod1-max - probaby some background process
  was also running last time at that test )