http: batch body spans per parser execute - #67187

++ ./node-master benchmark/compare.js --set CPUSET=0-11 --analyze --old ./node-master --new ./node-pr --filter bench-parser-chunked -- http
                                                             confidence   improvement   accuracy (*)    (**)   (***)
http/bench-parser-chunked.js n=500 len=65536 chunkSize=1     ***          +3726.84 %   ±15.61%  ±21.03%  ±27.92%
http/bench-parser-chunked.js n=500 len=65536 chunkSize=16    ***          +2122.98 %   ±38.26%  ±51.57%  ±68.46%
http/bench-parser-chunked.js n=500 len=65536 chunkSize=256   ***           +522.99 %   ±40.48%  ±54.55%  ±72.41%
http/bench-parser-chunked.js n=500 len=65536 chunkSize=4096  ***            +43.47 %   ±11.18%  ±14.93%  ±19.55%

                                                                -3742.4%           0%           +3742.4%
http/bench-parser-chunked.js n=500 len=65536 chunkSize=1                         |███████████████████  +3726.84% ***
http/bench-parser-chunked.js n=500 len=65536 chunkSize=16                        |██████████░          +2122.98% ***
http/bench-parser-chunked.js n=500 len=65536 chunkSize=256                       |██                   +522.99% ***
http/bench-parser-chunked.js n=500 len=65536 chunkSize=4096                      |                     +43.47% ***

Rates were scaled by 1000x into HdrHistogram (3 significant figures).
Use --scale to adjust precision if needed.

Be aware that when doing many comparisons the risk of a false-positive
result increases. In this case, there are 4 comparisons, you can thus
expect the following amount of false-positive results:
  0.20 false positives, when considering a   5% risk acceptance (*, **, ***),
  0.04 false positives, when considering a   1% risk acceptance (**, ***),
  0.00 false positives, when considering a 0.1% risk acceptance (***)

The stars above are per-benchmark and uncorrected. Adjusting for the size of
this comparison set (Holm-Bonferroni), 4 comparisons remain significant at 5%.