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Tarides 227 Anil Madhavapeddy's Blog 220 Caml Weekly News 188 OCamlPro 170 Marc Elvers 147 Jane Street Tech Blog 124 MirageOS 79 Coq 78 Frama-C 76 Robur Cooperative 70 Caml INRIA 53 Jon Ludlam's Blog at recoil.org 53 Daniel Bünzli 42 David Allsopp's Blog 31 Bozhidar Batsov 30

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Anil Madhavapeddy 234 Tarides 226 Caml Weekly News 181 Mark Elvers 147 Jane Street Tech Blog 112 Coq 78 Frama-C 74 Robur Cooperative 70 Jon Ludlam 54 Caml INRIA 53 Daniel Bünzli 42 Bozhidar Batsov 28 Signals and Threads 26 Erik de Castro Lopo 25 Jake Donham 25

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Sys.readdir or Unix.readdir

When you recursively scan a massive directory tree, would you use Sys.readdir or Unix.readdir? My inclination is that Sys.readdir feels more convenient to use, and thus the lower-level Unix.readdir would have the performance edge. Is it significant enough to bother with?

acc current_source dir_handle full_path process_directory read_entries readdir s_blk sys unix

08 Jul 2025

Marc Elvers

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