nofib regressions in HEAD since 7.6.2 release

Johan Tibell johan.tibell at gmail.com
Fri Feb 8 18:42:02 CET 2013


Here are the numbers using -O2. Again on my 64-bit Core i7-3770 @ 3.40GHz,
running Linux.

7.6.1 vs HEAD:

--------------------------------------------------------------------------------
        Program           Size    Allocs   Runtime   Elapsed  TotalMem
--------------------------------------------------------------------------------
           anna          +0.1%     -1.5%      0.08      0.08     +0.0%
           ansi          -1.5%     -0.4%      0.00      0.00     +0.0%
           atom          -0.4%     +0.0%     +0.8%     +0.8%     +0.0%
         awards          -1.0%     -0.1%      0.00      0.00     +0.0%
         banner          -2.7%     -2.1%      0.00      0.00     +0.0%
     bernouilli          -0.5%     -2.6%      0.13      0.13     +0.0%
   binary-trees          +5.6%     +0.0%     +4.5%     +2.8%     +8.0%
          boyer          -1.5%     -0.0%      0.04      0.04     +0.0%
         boyer2          -2.8%     -0.0%      0.01      0.01     +0.0%
           bspt          -0.4%     -0.1%      0.01      0.01    -33.3%
      cacheprof          -0.5%     -6.4%     +6.6%     +0.0%     -4.0%
       calendar          -1.3%     -0.1%      0.00      0.00     +0.0%
       cichelli          -2.4%     +0.0%      0.06      0.06     -5.7%
        circsim          -1.1%     -0.1%     +6.6%     +3.2%     +1.0%
       clausify          -1.4%     -0.0%      0.03      0.03     +0.0%
  comp_lab_zift          -1.3%     -0.0%      0.14      0.14    -12.5%
       compress          -1.3%     -0.0%      0.12      0.12     +0.0%
      compress2          -1.7%     -0.0%      0.13      0.14     -2.1%
    constraints          -1.4%     -0.0%     +4.3%     +2.6%     +0.0%
   cryptarithm1          -2.8%     +0.0%     -0.5%     -3.5%     +0.0%
   cryptarithm2          -3.3%     +1.0%      0.01      0.01     +0.0%
            cse          -2.7%     +0.0%      0.00      0.00     +0.0%
          eliza          -2.6%     -7.1%      0.00      0.00     +0.0%
          event          -1.6%     -0.0%      0.10      0.10     +9.5%
         exp3_8          -1.4%     -0.0%      0.14      0.14    -50.0%
         expert          -1.8%    -15.5%      0.00      0.00     +0.0%
 fannkuch-redux          -0.9%     -0.0%     -1.7%     -2.1%     +0.0%
          fasta          -1.5%     +8.7%     +9.2%     -0.6%    -50.0%
            fem          -2.1%     -0.5%      0.03      0.03     +0.0%
            fft          -0.6%     -0.0%      0.03      0.03     +0.0%
           fft2          -3.5%    -24.6%      0.04      0.04    -33.3%
       fibheaps          -1.3%     -0.2%      0.03      0.03     +0.0%
           fish          -2.2%     +0.0%      0.01      0.01     +0.0%
          fluid          +0.8%    -11.9%      0.01      0.01    -50.0%
         fulsom          -0.0%     +0.0%      0.20      0.20     -6.2%
         gamteb          -0.8%     +0.1%      0.04      0.04     +0.0%
            gcd          -0.6%     -0.0%      0.03      0.03     +0.0%
    gen_regexps          -2.7%     -2.1%      0.00      0.00     +0.0%
         genfft          -0.9%     +0.3%      0.03      0.03     +0.0%
             gg          -0.4%    -29.0%      0.02      0.02     +0.0%
           grep          -0.1%     -2.3%      0.00      0.00     +0.0%
         hidden          +0.3%     -3.4%     -6.4%    -10.4%     +0.0%
            hpg          -0.6%     +1.3%      0.10      0.10     +0.0%
            ida          -0.9%     +1.0%      0.06      0.06    -20.0%
          infer          -0.8%     -0.5%      0.05      0.05    -38.5%
        integer          -0.5%     -1.0%     -1.9%     -2.6%     +0.0%
      integrate          +0.6%    -36.0%      0.14    -38.2%     -2.9%
   k-nucleotide          +7.2%     +5.2%     +0.5%     -0.6%    +46.2%
          kahan          -0.5%    -99.7%    -53.0%    -52.8%     +0.0%
        knights          -1.7%     +0.4%      0.01      0.01     +0.0%
           lcss          -2.0%     -0.7%    +35.0%    +22.7%     -3.7%
           life          -2.2%     -0.0%      0.16      0.16     +0.0%
           lift          -2.0%     -0.1%      0.00      0.00     +0.0%
      listcompr          -2.7%     +0.0%      0.06      0.06     +0.0%
       listcopy          -2.7%     +0.0%      0.06      0.06     +0.0%
       maillist          -2.7%     -0.9%      0.04      0.04     -2.9%
         mandel          +0.8%     -0.0%      0.05      0.05     +0.0%
        mandel2          -2.7%     -0.0%      0.00      0.00     +0.0%
        minimax          -2.5%     +0.0%      0.00      0.00     +0.0%
        mkhprog          -2.5%     -1.1%      0.00      0.00     +0.0%
     multiplier          -1.0%     -0.0%      0.08      0.08     +0.0%
         n-body          +5.4%     +0.0%    -22.3%    -23.1%     +0.0%
       nucleic2          +2.2%    -16.3%      0.05      0.05     +0.0%
           para          -1.7%    -18.5%     -8.1%    -12.8%     +0.0%
      paraffins          -1.4%     -0.0%      0.07      0.07     -7.0%
         parser          -1.3%    -18.4%      0.03      0.03     +0.0%
        parstof          -1.8%     -4.5%      0.00      0.00     +0.0%
            pic          -1.0%     -0.0%      0.00      0.00     +0.0%
       pidigits          -0.6%     -0.0%     +4.8%     -2.3%     +0.0%
          power          +0.0%     -0.0%     +2.9%     +0.5%     +0.0%
         pretty          -1.1%     -0.0%      0.00      0.00     +0.0%
         primes          -1.0%     +0.0%      0.05      0.05     +0.0%
      primetest          -0.6%     -0.0%      0.07      0.07     +0.0%
         prolog          -2.1%    -14.0%      0.00      0.00     +0.0%
         puzzle          -2.6%     +2.2%      0.10      0.10     +0.0%
         queens          -1.5%     -0.0%      0.02      0.02     +0.0%
        reptile          -0.8%     -0.8%      0.02      0.02     +0.0%
reverse-complem          -2.5%     +0.0%      0.08      0.08     +0.0%
        rewrite          -1.2%     -0.7%      0.02      0.02     +0.0%
           rfib          +1.0%     -0.4%      0.02      0.02     +0.0%
            rsa          -0.7%     -2.5%      0.03      0.03     +0.0%
            scc          -2.8%     -0.0%      0.00      0.00     +0.0%
          sched          -1.5%     -0.0%      0.02      0.02     +0.0%
            scs          +2.0%     -0.6%     +2.2%     +0.5%     +0.0%
         simple          -0.7%     +0.0%      0.16      0.16     -6.5%
          solid          -0.5%     -0.0%      0.10      0.10     +0.0%
        sorting          -2.7%    -35.9%      0.00      0.00     +0.0%
  spectral-norm          +5.4%    +16.1%     +0.0%     +0.0%     +0.0%
         sphere          -1.1%     +1.8%      0.03      0.03     +0.0%
         symalg          +0.8%     -0.3%      0.01      0.01     +0.0%
            tak          -1.5%     -0.9%      0.01      0.01     +0.0%
      transform          -1.0%     -0.0%     +4.3%     +2.6%     +0.0%
       treejoin          -2.7%    -52.4%      0.15      0.15     +3.8%
      typecheck          -1.3%     -0.0%      0.15      0.15     +0.0%
        veritas          -0.3%     -0.0%      0.00      0.00     +0.0%
           wang          -0.8%     -0.0%      0.08      0.08     +0.0%
      wave4main          -1.3%     -1.8%      0.19      0.19     +7.7%
   wheel-sieve1          -1.0%     -0.0%     +8.3%     +3.1%    +14.3%
   wheel-sieve2          -1.0%     -0.0%      0.12      0.12     -2.1%
           x2n1          -7.1%    -48.0%      0.01      0.01    -66.7%
--------------------------------------------------------------------------------
            Min          -7.1%    -95.0%    -53.0%    -52.8%    -66.7%
            Max          +7.2%    +16.1%    +35.0%    +22.7%    +46.2%
 Geometric Mean          -1.0%     -6.8%     -1.7%     -6.6%     -4.4%

lcss is definitely worth looking into, as it regressed ~35%. fast might be
worth looking into, as it regressed with ~10%. There are also some ~5%
regressions that are probably not worth looking into, unless someone has
spare time.

7.6.2 vs HEAD:

--------------------------------------------------------------------------------
        Program           Size    Allocs   Runtime   Elapsed  TotalMem
--------------------------------------------------------------------------------
           anna          +0.8%     -1.5%      0.08      0.08     +0.0%
           ansi          +0.5%     -0.4%      0.00      0.00     +0.0%
           atom          +0.9%     +0.0%     +0.8%     +0.8%     +0.0%
         awards          +0.9%     -0.1%      0.00      0.00     +0.0%
         banner          -0.1%     -2.1%      0.00      0.00     +0.0%
     bernouilli          +0.6%     -2.6%      0.13      0.13     +0.0%
   binary-trees          +6.9%     +0.0%     +3.2%     +1.6%     +8.0%
          boyer          +0.7%     -0.0%      0.04      0.04     +0.0%
         boyer2          -0.2%     -0.0%      0.01      0.01     +0.0%
           bspt          +0.7%     -0.1%      0.01      0.01    -33.3%
      cacheprof          +0.9%     -6.4%     +4.0%     +0.0%     -4.0%
       calendar          +0.9%     -0.1%      0.00      0.00     +0.0%
       cichelli          +0.2%     +0.0%      0.06      0.06     -5.7%
        circsim          +0.8%     -0.1%     +7.0%     +1.9%     +1.0%
       clausify          +0.8%     -0.0%      0.03      0.03     +0.0%
  comp_lab_zift          +0.8%     -0.0%      0.14      0.14    -12.5%
       compress          +0.1%     -0.0%      0.12      0.12     +0.0%
      compress2          +0.1%     -0.0%      0.13      0.14     -2.1%
    constraints          +0.8%     -0.0%     +2.3%     +0.2%     +0.0%
   cryptarithm1          +0.1%     +0.0%     -2.5%     -4.0%     +0.0%
   cryptarithm2          -0.6%     +1.0%      0.01      0.01     +0.0%
            cse          +0.0%     +0.0%      0.00      0.00     +0.0%
          eliza          -0.1%     -7.1%      0.00      0.00     +0.0%
          event          +0.7%     -0.0%      0.10      0.10     +9.5%
         exp3_8          +0.8%     -0.0%      0.14      0.14    -50.0%
         expert          +0.2%    -15.5%      0.00      0.00     +0.0%
 fannkuch-redux          +0.8%     -0.0%     +3.7%     +3.7%     +0.0%
          fasta          +0.8%     -0.0%     +7.8%     +0.6%     +0.0%
            fem          -1.4%     -0.5%      0.03      0.03     +0.0%
            fft          +0.7%     -0.0%      0.03      0.03     +0.0%
           fft2          -3.5%    -24.6%      0.04      0.04    -33.3%
       fibheaps          +0.9%     -0.2%      0.03      0.03     +0.0%
           fish          +0.0%     +0.0%      0.01      0.01     +0.0%
          fluid          +1.2%    -11.9%      0.01      0.01    -50.0%
         fulsom          +0.2%     +0.0%      0.20      0.20     -5.1%
         gamteb          +0.3%     +0.1%      0.04      0.04     +0.0%
            gcd          +0.8%     -0.0%      0.03      0.03     +0.0%
    gen_regexps          -0.0%     -2.1%      0.00      0.00     +0.0%
         genfft          +0.8%     +0.3%      0.03      0.03     +0.0%
             gg          +0.6%    -29.0%      0.02      0.02     +0.0%
           grep          +2.5%     -2.3%      0.00      0.00     +0.0%
         hidden          +0.7%     -3.4%     -6.4%     -8.2%     +0.0%
            hpg          +0.5%     +1.3%      0.10      0.10     +0.0%
            ida          +0.8%     +1.0%      0.06      0.06    -20.0%
          infer          +1.2%     -0.5%      0.05      0.05    -38.5%
        integer          +0.9%     -1.0%     -4.7%     -5.6%     +0.0%
      integrate          +0.9%    -36.0%    -34.6%    -41.9%     -1.0%
   k-nucleotide          +8.5%     +5.2%     +2.7%     +1.7%    +46.2%
          kahan          +0.9%    -99.7%    -52.2%    -52.0%     +0.0%
        knights          +0.2%     +0.4%      0.01      0.01     +0.0%
           lcss          +0.2%     -0.7%      0.27    +25.0%     -3.7%
           life          +0.1%     -0.0%      0.16      0.16     +0.0%
           lift          +0.0%     -0.1%      0.00      0.00     +0.0%
      listcompr          +0.1%     +0.0%      0.06      0.06     +0.0%
       listcopy          +0.1%     +0.0%      0.06      0.06     +0.0%
       maillist          -0.1%     -1.8%      0.04      0.04     +6.3%
         mandel          +0.8%     -0.0%      0.05      0.05     +0.0%
        mandel2          +0.1%     -0.0%      0.00      0.00     +0.0%
        minimax          +0.2%     +0.0%      0.00      0.00     +0.0%
        mkhprog          +0.2%     -1.1%      0.00      0.00     +0.0%
     multiplier          +1.2%     -0.0%      0.08      0.08     +0.0%
         n-body          +6.6%     +0.0%    -21.4%    -22.2%     +0.0%
       nucleic2          +3.4%    -16.3%      0.05      0.05     +0.0%
           para          +0.3%    -18.5%    -12.8%    -15.0%     +0.0%
      paraffins          +0.8%     -0.0%      0.07      0.07     -7.0%
         parser          +0.7%    -18.4%      0.03      0.03     +0.0%
        parstof          +0.5%     -4.5%      0.00      0.00     +0.0%
            pic          -0.8%     -0.0%      0.00      0.00     +0.0%
       pidigits          +0.8%     -0.0%     +3.6%     -0.6%     +0.0%
          power          +1.0%     -0.0%     +1.4%     -0.9%     +0.0%
         pretty          +0.2%     -0.0%      0.00      0.00     +0.0%
         primes          +0.8%     +0.0%      0.05      0.05     +0.0%
      primetest          +0.7%     -0.0%      0.07      0.07     +0.0%
         prolog          +0.2%    -14.0%      0.00      0.00     +0.0%
         puzzle          +0.1%     +2.2%      0.10      0.10     +0.0%
         queens          +0.8%     -0.0%      0.02      0.02     +0.0%
        reptile          +0.6%     -0.8%      0.02      0.02     +0.0%
reverse-complem          +0.4%     +0.0%      0.08      0.08     +0.0%
        rewrite          +1.0%     -0.7%      0.02      0.02     +0.0%
           rfib          +1.0%     -0.4%      0.02      0.02     +0.0%
            rsa          +0.7%     -2.5%      0.03      0.03     +0.0%
            scc          +0.1%     -0.0%      0.00      0.00     +0.0%
          sched          +0.8%     -0.0%      0.02      0.02     +0.0%
            scs          +2.0%     -0.6%     +5.2%     +1.7%     +0.0%
         simple          +0.2%     +0.0%      0.16      0.16     -6.5%
          solid          +0.7%     -0.0%      0.10      0.10     +0.0%
        sorting          -0.0%    -35.9%      0.00      0.00     +0.0%
  spectral-norm          +6.7%    +16.1%     +0.2%     +0.0%     +0.0%
         sphere          +0.8%     +1.8%      0.03      0.03     +0.0%
         symalg          +0.8%     -0.3%      0.01      0.01     +0.0%
            tak          +0.8%     -0.9%      0.01      0.01     +0.0%
      transform          +0.9%     -0.0%     +6.2%     +3.4%     +0.0%
       treejoin          -0.0%    -52.4%      0.15      0.15     +3.8%
      typecheck          +0.8%     -0.0%      0.15      0.15     +0.0%
        veritas          +0.7%     -0.0%      0.00      0.00     +0.0%
           wang          +0.5%     -0.0%      0.08      0.08     +0.0%
      wave4main          +0.8%     -1.8%      0.19      0.19     +7.7%
   wheel-sieve1          +0.7%     -0.0%     +3.1%     +0.8%    +14.3%
   wheel-sieve2          +0.7%     -0.0%      0.12      0.12     -2.1%
           x2n1          -6.8%    -48.0%      0.01      0.01    -66.7%
--------------------------------------------------------------------------------
            Min          -6.8%    -95.0%    -52.2%    -52.0%    -66.7%
            Max          +8.5%    +16.1%     +7.8%    +25.0%    +46.2%
 Geometric Mean          +0.7%     -6.9%     -5.5%     -6.6%     -3.6%

7.6.1 vs 7.6.2:

--------------------------------------------------------------------------------
        Program           Size    Allocs   Runtime   Elapsed  TotalMem
--------------------------------------------------------------------------------
           anna          -0.6%     +0.0%      0.07      0.08     +0.0%
           ansi          -2.0%     +0.0%      0.00      0.00     +0.0%
           atom          -1.3%     +0.0%     +0.0%     +0.0%     +0.0%
         awards          -1.8%     +0.0%      0.00      0.00     +0.0%
         banner          -2.6%     +0.0%      0.00      0.00     +0.0%
     bernouilli          -1.0%     +0.0%      0.13      0.13     +0.0%
   binary-trees          -1.2%     +0.0%     +1.2%     +1.2%     +0.0%
          boyer          -2.2%     +0.0%      0.03      0.04     +0.0%
         boyer2          -2.6%     +0.0%      0.01      0.01     +0.0%
           bspt          -1.1%     +0.0%      0.01      0.02     +0.0%
      cacheprof          -1.4%     +0.0%     +2.5%     +0.0%     +0.0%
       calendar          -2.2%     +0.0%      0.00      0.00     +0.0%
       cichelli          -2.6%     +0.0%      0.05      0.06     +0.0%
        circsim          -1.9%     +0.0%     -0.3%     +1.3%     +0.0%
       clausify          -2.2%     +0.0%      0.03      0.03     +0.0%
  comp_lab_zift          -2.1%     +0.0%      0.13      0.14     +0.0%
       compress          -1.4%     +0.0%      0.11      0.11     +0.0%
      compress2          -1.8%     +0.0%      0.12      0.14     +0.0%
    constraints          -2.2%     +0.0%     +2.0%     +2.4%     +0.0%
   cryptarithm1          -2.8%     +0.0%     +2.1%     +0.5%     +0.0%
   cryptarithm2          -2.7%     +0.0%      0.01      0.01     +0.0%
            cse          -2.7%     +0.0%      0.00      0.00     +0.0%
          eliza          -2.5%     +0.0%      0.00      0.00     +0.0%
          event          -2.2%     +0.0%      0.09      0.10     +0.0%
         exp3_8          -2.2%     +0.0%      0.14      0.14     +0.0%
         expert          -2.0%     +0.0%      0.00      0.00     +0.0%
 fannkuch-redux          -1.7%     +0.0%     -5.2%     -5.6%     +0.0%
          fasta          -2.3%     +8.7%     +1.3%     -1.2%    -50.0%
            fem          -0.7%     +0.0%      0.02      0.03     +0.0%
            fft          -1.3%     +0.0%      0.02      0.03     +0.0%
           fft2          +0.0%     +0.0%      0.04      0.05     +0.0%
       fibheaps          -2.2%     +0.0%      0.03      0.03     +0.0%
           fish          -2.2%     +0.0%      0.01      0.01     +0.0%
          fluid          -0.3%     +0.0%      0.01      0.01     +0.0%
         fulsom          -0.2%     +0.0%      0.19      0.19     -1.3%
         gamteb          -1.1%     +0.0%      0.03      0.04     +0.0%
            gcd          -1.4%     +0.0%      0.02      0.03     +0.0%
    gen_regexps          -2.7%     +0.0%      0.00      0.00     +0.0%
         genfft          -1.7%     +0.0%      0.03      0.03     +0.0%
             gg          -1.0%     +0.0%      0.01      0.02     +0.0%
           grep          -2.5%     +0.0%      0.00      0.00     +0.0%
         hidden          -0.4%     +0.0%     +0.0%     -2.5%     +0.0%
            hpg          -1.1%     +0.0%      0.05      0.10     +0.0%
            ida          -1.7%     +0.0%      0.06      0.06     +0.0%
          infer          -2.0%     +0.0%      0.05      0.05     +0.0%
        integer          -1.3%     +0.0%     +3.0%     +3.1%     +0.0%
      integrate          -0.3%     +0.0%      0.21     +6.4%     -1.9%
   k-nucleotide          -1.1%     +0.0%     -2.2%     -2.3%     +0.0%
          kahan          -1.4%     +0.0%     -1.7%     -1.7%     +0.0%
        knights          -1.9%     +0.0%      0.00      0.01     +0.0%
           lcss          -2.2%     +0.0%     -1.0%     -1.8%     +0.0%
           life          -2.3%     +0.0%      0.16      0.16     +0.0%
           lift          -2.0%     +0.0%      0.00      0.00     +0.0%
      listcompr          -2.8%     +0.0%      0.06      0.06     +0.0%
       listcopy          -2.8%     +0.0%      0.06      0.06     +0.0%
       maillist          -2.6%     +1.0%      0.03      0.05     -8.7%
         mandel          -0.0%     +0.0%      0.04      0.05     +0.0%
        mandel2          -2.8%     +0.0%      0.00      0.00     +0.0%
        minimax          -2.6%     +0.0%      0.00      0.00     +0.0%
        mkhprog          -2.6%     +0.0%      0.00      0.00     +0.0%
     multiplier          -2.2%     +0.0%      0.08      0.08     +0.0%
         n-body          -1.2%     +0.0%     -1.1%     -1.3%     +0.0%
       nucleic2          -1.2%     +0.0%      0.05      0.05     +0.0%
           para          -2.0%     +0.0%     +5.4%     +2.6%     +0.0%
      paraffins          -2.2%     +0.0%      0.06      0.08     +0.0%
         parser          -2.1%     +0.0%      0.03      0.03     +0.0%
        parstof          -2.2%     +0.0%      0.01      0.00     +0.0%
            pic          -0.3%     +0.0%      0.00      0.00     +0.0%
       pidigits          -1.5%     +0.0%     +1.2%     -1.7%     +0.0%
          power          -1.0%     +0.0%     +1.4%     +1.4%     +0.0%
         pretty          -1.4%     +0.0%      0.00      0.00     +0.0%
         primes          -1.8%     +0.0%      0.05      0.05     +0.0%
      primetest          -1.3%     +0.0%      0.08      0.07     +0.0%
         prolog          -2.4%     +0.0%      0.00      0.00     +0.0%
         puzzle          -2.7%     +0.0%      0.10      0.10     +0.0%
         queens          -2.3%     +0.0%      0.02      0.02     +0.0%
        reptile          -1.4%     +0.0%      0.01      0.02     +0.0%
reverse-complem          -2.9%     +0.0%      0.06      0.08     +0.0%
        rewrite          -2.1%     +0.0%      0.02      0.02     +0.0%
           rfib          +0.0%     +0.0%      0.02      0.02     +0.0%
            rsa          -1.4%     +0.0%      0.02      0.02     +0.0%
            scc          -2.9%     +0.0%      0.00      0.00     +0.0%
          sched          -2.2%     +0.0%      0.02      0.02     +0.0%
            scs          +0.0%     +0.0%     -2.8%     -1.1%     +0.0%
         simple          -1.0%     +0.0%      0.15      0.16     +0.0%
          solid          -1.3%     +0.0%      0.09      0.10     +0.0%
        sorting          -2.6%     +0.0%      0.00      0.00     +0.0%
  spectral-norm          -1.2%     +0.0%     -0.2%     +0.0%     +0.0%
         sphere          -1.9%     +0.0%      0.03      0.03     +0.0%
         symalg          -0.0%     +0.0%      0.00      0.01     +0.0%
            tak          -2.3%     +0.0%      0.01      0.01     +0.0%
      transform          -1.9%     +0.0%     -1.7%     -0.9%     +0.0%
       treejoin          -2.7%     +0.0%      0.15      0.16     +0.0%
      typecheck          -2.2%     +0.0%      0.15      0.15     +0.0%
        veritas          -1.1%     +0.0%      0.00      0.00     +0.0%
           wang          -1.3%     +0.0%      0.07      0.08     +0.0%
      wave4main          -2.1%     +0.0%      0.19      0.18     +0.0%
   wheel-sieve1          -1.7%     +0.0%     +5.0%     +2.4%     +0.0%
   wheel-sieve2          -1.7%     +0.0%      0.11      0.13     +0.0%
           x2n1          -0.3%     +0.0%      0.01      0.01     +0.0%
--------------------------------------------------------------------------------
            Min          -2.9%     +0.0%     -5.2%     -5.6%    -50.0%
            Max          +0.0%     +8.7%     +5.4%     +6.4%     +0.0%
 Geometric Mean          -1.7%     +0.1%     +0.4%     +0.0%     -0.8%

The big regression Bryan and I saw in hashable between 7.6.1 and 7.6.2
isn't visible here, so we might need to extract a separate benchmark for it.

-- Johan
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