Re: [Nix-dev] Making Hydra super fast (was: Security channel proposal)

2014-09-25 Thread Paul Colomiets
Hi Peter, On Thu, Sep 25, 2014 at 9:19 PM, Peter Simons wrote: > Hydra is appears slow because "hydra-evaluator" is single-threaded. A > round-trip evaluating all jobsets on hydra.nixos.org takes almost a day. If > a commit comes in 10 minutes after 'master' was evaluated, then it takes ~24 > hou

Re: [Nix-dev] Making Hydra super fast (was: Security channel proposal)

2014-09-25 Thread Wout Mertens
On Sep 25, 2014 8:19 PM, "Peter Simons" wrote: > > Hi Wout, > > > Another option would be to make Hydra super fast... What has been > > explored to optimize compile speeds? Using distcc, ccache, SSD, > > elastic scaling? > > Hydra is appears slow because "hydra-evaluator" is single-threaded. A

[Nix-dev] Making Hydra super fast (was: Security channel proposal)

2014-09-25 Thread Peter Simons
Hi Wout, > Another option would be to make Hydra super fast... What has been > explored to optimize compile speeds? Using distcc, ccache, SSD, > elastic scaling? Hydra is appears slow because "hydra-evaluator" is single-threaded. A round-trip evaluating all jobsets on hydra.nixos.org takes alm