5.15.5:

                Rate  one-s/// s-capture s-capture2 m-capture two-s///    unpack
one-s///    146152/s        --      -30%       -50%      -67%     -78%      -88%
s-capture   208100/s       42%        --       -30%      -53%     -69%      -83%
s-capture2  295196/s      102%       42%         --      -34%     -56%      -76%
m-capture   446788/s      206%      115%        51%        --     -34%      -64%
two-s///    673459/s      361%      224%       128%       51%       --      -46%
unpack     1239336/s      748%      496%       320%      177%      84%        --

5.14.2:

                Rate  one-s/// s-capture s-capture2 m-capture two-s///    unpack
one-s///    137451/s        --      -28%       -55%      -67%     -80%      -88%
s-capture   191603/s       39%        --       -38%      -53%     -72%      -84%
s-capture2  306586/s      123%       60%         --      -25%     -56%      -74%
m-capture   410529/s      199%      114%        34%        --     -41%      -65%
two-s///    692258/s      404%      261%       126%       69%       --      -41%
unpack     1172943/s      753%      512%       283%      186%      69%        --

5.14.1 (production perl with Rexexp::Common):

                   Rate Regexp-Common one-s/// s-capture s-capture2 m-capture two-s/// unpack
Regexp-Common   35655/s            --     -79%      -87%       -91%      -94%     -96%   -97%
one-s///       171398/s          381%       --      -36%       -54%      -69%     -79%   -88%
s-capture      268800/s          654%      57%        --       -29%      -52%     -67%   -81%
s-capture2     376317/s          955%     120%       40%         --      -32%     -53%   -74%
m-capture      556706/s         1461%     225%      107%        48%        --     -31%   -61%
two-s///       808968/s         2169%     372%      201%       115%       45%       --   -43%
unpack        1424354/s         3895%     731%      430%       278%      156%      76%     --

5.12.4:

                Rate  one-s/// s-capture s-capture2 m-capture two-s///    unpack
one-s///    136992/s        --      -32%       -52%      -69%     -80%      -88%
s-capture   200658/s       46%        --       -30%      -54%     -71%      -82%
s-capture2  288356/s      110%       44%         --      -34%     -58%      -75%
m-capture   437898/s      220%      118%        52%        --     -37%      -62%
two-s///    694505/s      407%      246%       141%       59%       --      -39%
unpack     1143892/s      735%      470%       297%      161%      65%        --

5.10.1:

                Rate  one-s/// s-capture s-capture2 m-capture two-s///    unpack
one-s///    154239/s        --      -31%       -53%      -69%     -79%      -88%
s-capture   221974/s       44%        --       -32%      -55%     -70%      -83%
s-capture2  325661/s      111%       47%         --      -34%     -56%      -75%
m-capture   490550/s      218%      121%        51%        --     -34%      -62%
two-s///    740666/s      380%      234%       127%       51%       --      -42%
unpack     1278065/s      729%      476%       292%      161%      73%        --

5.8.9:

                Rate s-capture  one-s/// s-capture2 m-capture two-s///    unpack
s-capture   230743/s        --      -12%       -29%      -50%     -76%      -83%
one-s///    262166/s       14%        --       -19%      -43%     -73%      -81%
s-capture2  323587/s       40%       23%         --      -30%     -67%      -76%
m-capture   463883/s      101%       77%        43%        --     -53%      -66%
two-s///    977938/s      324%      273%       202%      111%       --      -28%
unpack     1354222/s      487%      417%       319%      192%      38%        --

5.6.2:

                Rate s-capture  one-s/// s-capture2 m-capture two-s///    unpack
s-capture   331911/s        --      -11%       -28%      -50%     -78%      -79%
one-s///    372325/s       12%        --       -19%      -44%     -75%      -76%
s-capture2  462448/s       39%       24%         --      -30%     -69%      -71%
m-capture   664093/s      100%       78%        44%        --     -56%      -58%
two-s///   1503714/s      353%      304%       225%      126%       --       -5%
unpack     1574832/s      374%      323%       241%      137%       5%        --