Hi, On 10/30/2011 10:55 PM, Lluís Batlle i Rossell wrote:
> On the sheevaplug, 512MB of physical RAM, and the same amount of swap: > 7.88user 0.71system 0:09.86elapsed 87%CPU (0avgtext+0avgdata > 617568maxresident)k > 0inputs+0outputs (4major+41841minor)pagefaults 0swaps > > I think Eelco thinks there is a bug in 'time' about the remort of memory, > showing something 4-times bigger or so on some systems. Maybe we have > something > bad about page-size in headers/kernel? I've looked into this and it turns out to be a bug in ‘time’. I've applied a fix. FWIW, here are my stats (on a 64-bit machine): $ command time nix-env -i hello --dry-run 0.72user 0.21system 0:00.96elapsed 97%CPU (0avgtext+0avgdata 352008maxresident)k $ GC_INITIAL_HEAP_SIZE=100000 command time nix-env -i hello --dry-run 1.46user 0.08system 0:01.57elapsed 98%CPU (0avgtext+0avgdata 104540maxresident)k $ command time nix-env -f ~/Dev/nixpkgs -iA hello --dry-run 0.07user 0.01system 0:00.10elapsed 82%CPU (0avgtext+0avgdata 13388maxresident)k $ GC_INITIAL_HEAP_SIZE=100000 command time nix-env -f ~/Dev/nixpkgs -iA hello --dry-run 0.08user 0.01system 0:00.11elapsed 81%CPU (0avgtext+0avgdata 12736maxresident)k $ command time nix-instantiate /etc/nixos/nixos -A system --readonly-mode 1.00user 0.10system 0:01.11elapsed 99%CPU (0avgtext+0avgdata 243636maxresident)k $ GC_INITIAL_HEAP_SIZE=100000 command time nix-instantiate /etc/nixos/nixos -A system --readonly-mode 1.34user 0.04system 0:01.39elapsed 99%CPU (0avgtext+0avgdata 64544maxresident)k So NixOS system evaluation can run in 63 MiB. -- Eelco Dolstra | http://www.st.ewi.tudelft.nl/~dolstra/ _______________________________________________ nix-dev mailing list nix-dev@lists.science.uu.nl http://lists.science.uu.nl/mailman/listinfo/nix-dev
