Branch: refs/heads/master
Home: https://github.com/NixOS/nix
Commit: c0d4173263a3077905643d5a044e982fc830f7ff
https://github.com/NixOS/nix/commit/c0d4173263a3077905643d5a044e982fc830f7ff
Author: Eelco Dolstra <[email protected]>
Date: 2015-11-25 (Wed, 25 Nov 2015)
Changed paths:
M doc/manual/command-ref/conf-file.xml
M scripts/download-from-binary-cache.pl.in
Log Message:
-----------
Set default binary-caches-parallel-connections to 25
Some benchmarking suggested this as a good value. Running
$ benchmark -f ... -t 25 -- sh -c 'rm -f /nix/var/nix/binary-cache*;
nix-store -r
/nix/store/x5z8a2yvz8h6ccmhwrwrp9igg03575jg-nixos-15.09.git.5fd87e1M.drv
--dry-run --option binary-caches-parallel-connections <N>'
gave the following mean elapsed times for these values of N:
N=10: 3.3541
N=20: 2.9320
N=25: 2.6690
N=30: 2.9417
N=50: 3.2021
N=100: 3.5718
N=150: 4.2079
Memory usage is also reduced (N=150 used 186 MB, N=25 only 68 MB).
Closes #708.
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