EROFS compression matrix — katsu #489
16/18 configs with data · run 37186564019 · commit f1d6a0d · reads = composefs object bench (61410 files, 300 samples) · hover any bar or dot for full params
Read latency — p50 / p90 / p99
sorted by median read. layered bars: outer = p99, middle = p90, solid = p50. scale is linear to the slowest p99.
p50
p90
p99
Image size — ISO (GiB)
sorted smallest first. lzma wins on size; everything else lands in a 4.79–4.98 GiB band.
Build time vs image size
x = build time (min), y = ISO size (GiB). dedupe=1 rows (hollow rings) sit far right for almost no size gain.
128 KiB zstd
1 MiB zstd
lzma
dedupe=1
Size vs read cost
x = ISO size (GiB), y = median read (ms). up-left is the bad corner.
128 KiB zstd
1 MiB zstd
lzma