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c2b898da76
Passing `-l$NIX_BUILD_CORES` improperly limits the overall system load. For a build machine which is configured to run `$B` builds where each build gets `total cores / B` cores (`$C`), passing `-l $C` to make will improperly limit the load to `$C` instead of `$B * $C`. This effect becomes quite pronounced on machines with 80 cores, with 40 simultaneous builds and a cores limit of 2. On a machine with this configuration, Nix will run 40 builds and make will limit the overall system load to approximately 2. A build machine with this many cores can happily run with a load approaching 80. A non-solution is to oversubscribe the machine, by picking a larger `$C`. However, there is no way to divide the number of cores in a way which fairly subdivides the available cores when `$B` is greater than 1. There has been exploration of passing a jobserver in to the sandbox, or sharing a jobserver between all the builds. This is one option, but relatively complicated and only supports make. Lots of other software uses its own implementation of `-j` and doesn't support either `-l` or the Make jobserver. For the case of an interactive user machine, the user should limit overall system load using `$B`, `$C`, and optionally systemd's cpu/network/io limiting features. Making this change should significantly improve the utilization of our build farm, and improve the throughput of Hydra.
68 lines
2.1 KiB
Nix
68 lines
2.1 KiB
Nix
{ lib, fetchgit, SDL, stdenv, libogg, libvorbis, libmad, xdelta }:
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stdenv.mkDerivation rec {
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pname = "uhexen2";
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version = "1.5.9";
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src = fetchgit {
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url = "https://git.code.sf.net/p/uhexen2/uhexen2";
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sha256 = "0crdihbnb92awkikn15mzdpkj1x9s34xixf1r7fxxf762m60niks";
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rev = "4ef664bc41e3998b0d2a55ff1166dadf34c936be";
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};
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buildInputs = [ SDL libogg libvorbis libmad xdelta ];
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preBuild = ''
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makeFiles=(
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"engine/hexen2 glh2"
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"engine/hexen2 clean"
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"engine/hexen2 h2"
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"engine/hexen2/server"
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"engine/hexenworld/client glhw"
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"engine/hexenworld/client clean"
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"engine/hexenworld/client hw"
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"engine/hexenworld/server"
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"h2patch"
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)
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'';
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buildPhase = ''
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runHook preBuild
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for makefile in "''${makeFiles[@]}"; do
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local flagsArray=(
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-j$NIX_BUILD_CORES
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SHELL=$SHELL
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$makeFlags "''${makeFlagsArray[@]}"
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$buildFlags "''${buildFlagsArray[@]}"
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)
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echoCmd 'build flags' ""''${flagsArray[@]}""
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make -C $makefile ""''${flagsArray[@]}""
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unset flagsArray
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done
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runHook postBuild
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'';
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installPhase = ''
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runHook preInstall
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install -Dm755 engine/hexen2/{glhexen2,hexen2,server/h2ded} -t $out/bin
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install -Dm755 engine/hexenworld/{client/glhwcl,client/hwcl,server/hwsv} -t $out/bin
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install -Dm755 h2patch/h2patch -t $out/bin
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runHook postInstall
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'';
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meta = with lib; {
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broken = stdenv.isDarwin;
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description = "A cross-platform port of Hexen II game";
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longDescription = ''
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Hammer of Thyrion (uHexen2) is a cross-platform port of Raven Software's Hexen II source.
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It is based on an older linux port, Anvil of Thyrion.
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HoT includes countless bug fixes, improved music, sound and video modes, opengl improvements,
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support for many operating systems and architectures, and documentation among many others.
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'';
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homepage = "http://uhexen2.sourceforge.net/";
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license = licenses.gpl2Plus;
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maintainers = with maintainers; [ xdhampus ];
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platforms = platforms.all;
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};
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}
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