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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 { daemonNiceLevel = mkOption {
default = 2; default = 10;
description = " description = "
Nix daemon process priority. This priority propagates to build processes. Nix daemon process priority. This priority propagates to build processes.
0 is the default Unix process priority, 20 is the lowest. 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 { buildMachines = mkOption {
example = [ example = [
{ hostName = "voila.labs.cs.uu.nl"; { 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 export PATH=${if config.nix.distributedBuilds then "${pkgs.openssh}/bin:${pkgs.gzip}/bin:" else ""}${pkgs.openssl}/bin:${nix}/bin:$PATH
${config.nix.envVars} ${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 = extraConfig =