23bf99b8e2
According to following two benchmarks: - https://www.rootusers.com/gzip-vs-bzip2-vs-xz-performance-comparison/ - http://catchchallenger.first-world.info/wiki/Quick_Benchmark:_Gzip_vs_Bzip2_vs_LZMA_vs_XZ_vs_LZ4_vs_LZO xz has better compression ratio than bzip2 at lowest compression rate. https://github.com/vasi/pixz has been chosen as it can scale compressing over multiple cores linearly. We're using this in snabblab for a month now and it has improved CPU wise the main Hydra server.
To start hacking on Hydra, run:
$ bootstrap
$ nix-shell
$ ./configure $configureFlags --prefix=/opt/hydra
$ make
$ make install
Or, if you just want to build from source (on x86_64-linux):
$ nix-build -A build.x86_64-linux release.nix