Encoder comparison

Recorded run: long-20261109 (2026-11-09). Raw results · Environment · Run analysis.

Median compression speed and size relative to C

All 8 datasets contribute equally to each median, including empty and tiny input. For each dataset, speed / C = C mean latency / mzstd mean latency; output / C = mzstd bytes / C bytes. Medians are taken over those ratios. Levels are ordered by mzstd median speed / C, highest first. Frames are byte-identical, so output / C is 1× at every level.

Level	mzstd speed / C ↑	mzstd output / C ↓	Datasets
Level -5	1.720×	1.000×	8
Level -1	1.633×	1.000×	8
Level 2	1.455×	1.000×	8
Level 1	1.380×	1.000×	8
Level 16	1.337×	1.000×	8
Level 19	1.318×	1.000×	8
Level 17	1.298×	1.000×	8
Level 18	1.287×	1.000×	8
Level 20	1.268×	1.000×	8
Level 8	1.268×	1.000×	8
Level 3	1.268×	1.000×	8
Level 9	1.266×	1.000×	8
Level 10	1.261×	1.000×	8
Level 5	1.256×	1.000×	8
Level 7	1.244×	1.000×	8
Level 6	1.222×	1.000×	8
Level 21	1.219×	1.000×	8
Level 15	1.195×	1.000×	8
Level 22	1.193×	1.000×	8
Level 12	1.184×	1.000×	8
Level 13	1.172×	1.000×	8
Level 11	1.164×	1.000×	8
Level 4	1.163×	1.000×	8
Level 14	1.111×	1.000×	8