anchor.diff:  silesia.tar,                      level 19,                         old streaming,                    4281514
   silesia.tar,                      no source size,                   old streaming,                    4875006
   github,                           level -5,                         old streaming,                    232744
  -github,                           level -5 with dict,               old streaming,                    45528
  +github,                           level -5 with dict,               old streaming,                    46718
   github,                           level -3,                         old streaming,                    220611
  -github,                           level -3 with dict,               old streaming,                    44394
  +github,                           level -3 with dict,               old streaming,                    45395
   github,                           level -1,                         old streaming,                    176575
  -github,                           level -1 with dict,               old streaming,                    41401
  +github,                           level -1 with dict,               old streaming,                    43170
   github,                           level 0,                          old streaming,                    136397
  -github,                           level 0 with dict,                old streaming,                    38316
  +github,                           level 0 with dict,                old streaming,                    41170
   github,                           level 1,                          old streaming,                    143457
  -github,                           level 1 with dict,                old streaming,                    41242
  +github,                           level 1 with dict,                old streaming,                    41682
   github,                           level 3,                          old streaming,                    136397
  -github,                           level 3 with dict,                old streaming,                    38316
  +github,                           level 3 with dict,                old streaming,                    41170
   github,                           level 4,                          old streaming,                    136144
  -github,                           level 4 with dict,                old streaming,                    38292
  +github,                           level 4 with dict,                old streaming,                    41306
   github,                           level 5,                          old streaming,                    135106
   github,                           level 5 with dict,                old streaming,                    38938
   github,                           level 6,                          old streaming,                    135108
  
positive.code: silesia,                          small chain log,                  compress cctx,                    4931093
  silesia,                          explicit params,                  compress cctx,                    4813352
  github,                           level -5,                         compress cctx,                    232744
  github,                           level -5 with dict,               compress cctx,                    45704
  github,                           level -3,                         compress cctx,                    220611
  github,                           level -3 with dict,               compress cctx,                    44510
  github,                           level -1,                         compress cctx,                    176575
  github,                           level -1 with dict,               compress cctx,                    41586
  github,                           level 0,                          compress cctx,                    136397
  github,                           level 0 with dict,                compress cctx,                    38700
  github,                           level 1,                          compress cctx,                    143457
  github,                           level 1 with dict,                compress cctx,                    41538
  github,                           level 3,                          compress cctx,                    136397
  github,                           level 3 with dict,                compress cctx,                    38700
  github,                           level 4,                          compress cctx,                    136144
  github,                           level 4 with dict,                compress cctx,                    38639
  github,                           level 5,                          compress cctx,                    135106
  github,                           level 5 with dict,                compress cctx,                    38934
  github,                           level 6,                          compress cctx,                    135108
  
negative.code: silesia.tar,                      level 13,                         zstdcli,                          4491706
  silesia.tar,                      level 16,                         zstdcli,                          4381281
  silesia.tar,                      level 19,                         zstdcli,                          4281518
  silesia.tar,                      no source size,                   zstdcli,                          4875132
  silesia.tar,                      long distance mode,               zstdcli,                          4866975
  silesia.tar,                      multithreaded,                    zstdcli,                          4875136
  silesia.tar,                      multithreaded long distance mode, zstdcli,                          4866975
  silesia.tar,                      small window log,                 zstdcli,                          7130434
  silesia.tar,                      small hash log,                   zstdcli,                          6587841
  silesia.tar,                      small chain log,                  zstdcli,                          4943259
  silesia.tar,                      explicit params,                  zstdcli,                          4839202
  github,                           level -5,                         zstdcli,                          234744
  github,                           level -5 with dict,               zstdcli,                          48718
  github,                           level -3,                         zstdcli,                          222611
  github,                           level -3 with dict,               zstdcli,                          47395
  github,                           level -1,                         zstdcli,                          178575
  github,                           level -1 with dict,               zstdcli,                          45170
  github,                           level 0,                          zstdcli,                          138397
  github,                           level 0 with dict,                zstdcli,                          43170
  github,                           level 1,                          zstdcli,                          145457
  github,                           level 1 with dict,                zstdcli,                          43682
  github,                           level 3,                          zstdcli,                          138397
  github,                           level 3 with dict,                zstdcli,                          43170
  github,                           level 4,                          zstdcli,                          138144
  github,                           level 4 with dict,                zstdcli,                          43306
  github,                           level 5,                          zstdcli,                          137106
  github,                           level 5 with dict,                zstdcli,                          40938
  github,                           level 6,                          zstdcli,                          137108
  