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* Run the nix-daemon with a lower I/O priority so that it doesn't

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interfere with interactive tasks as much (hopefully).

svn path=/nixos/trunk/; revision=17820
This commit is contained in:
Eelco Dolstra 2009-10-15 11:25:15 +00:00
parent f57f344996
commit f6f5d0414e
1 changed files with 13 additions and 2 deletions
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15
modules/services/misc/nix-daemon.nix
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@ -67,13 +67,21 @@ in
};
daemonNiceLevel = mkOption {
default = 2;
default = 10;
description = "
Nix daemon process priority. This priority propagates to build processes.
0 is the default Unix process priority, 20 is the lowest.
";
};
daemonIONiceLevel = mkOption {
default = 7;
description = "
Nix daemon process I/O priority. This priority propagates to build processes.
0 is the default Unix process I/O priority, 7 is the lowest.
";
};
buildMachines = mkOption {
example = [
{ hostName = "voila.labs.cs.uu.nl";
@ -197,7 +205,10 @@ in
''
export PATH=${if config.nix.distributedBuilds then "${pkgs.openssh}/bin:${pkgs.gzip}/bin:" else ""}${pkgs.openssl}/bin:${nix}/bin:$PATH
${config.nix.envVars}
exec nice -n ${builtins.toString config.nix.daemonNiceLevel} ${nix}/bin/nix-worker --daemon > /dev/null 2>&1
exec \
nice -n ${builtins.toString config.nix.daemonNiceLevel} \
${pkgs.utillinux}/bin/ionice -n ${builtins.toString config.nix.daemonIONiceLevel} \
${nix}/bin/nix-worker --daemon > /dev/null 2>&1
'';
extraConfig =