lix/doc/manual/command-ref
Eelco Dolstra c0d4173263 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.
2015-11-25 17:13:11 +01:00
..
command-ref.xml
conf-file.xml
env-common.xml
files.xml
main-commands.xml
nix-build.xml
nix-channel.xml
nix-collect-garbage.xml
nix-copy-closure.xml
nix-daemon.xml
nix-env.xml
nix-generate-patches.xml
nix-hash.xml
nix-install-package.xml
nix-instantiate.xml
nix-prefetch-url.xml
nix-pull.xml
nix-push.xml
nix-shell.xml
nix-store.xml
opt-common-syn.xml
opt-common.xml
opt-inst-syn.xml
utilities.xml