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aszlig 02b568414d
nixos/test-instrumentation: Set vm.min_free_kbytes 
We hit page allocation failures a lot at random for VM tests, in case of
my own Hydra when it comes to the installer tests. The reason for this
is that once the memory of the VM gets heavily fragmented the kernel is
unable to allocate new pages.

Setting vm.min_free_kbytes to 16MB forces the kernel to keep a minimum
of 16 MB free.

I've done some testing accross repeated runs of the installer tests with
and without vm.min_free_kbytes set. So accross 30 test runs for each
settings, all of the tests with the option being set passed while 14
tests without that sysctl option triggered page allocation failures.

Sure, running 30 tests is not a guarantee that 16MB is enough, but we'll
see how it turns out in the long run across all VM tests.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2015-12-13 03:18:10 +01:00
doc Manual: Fix indent of config section 2015-12-10 16:06:12 +01:00
lib add makeBinPath function for abstracting away pkg/bin:pkg2/bin.. 2015-12-10 12:47:32 +01:00
maintainers copy-tarballs.pl: Remove redundant check 2015-12-10 17:26:05 +01:00
nixos nixos/test-instrumentation: Set vm.min_free_kbytes 2015-12-13 03:18:10 +01:00
pkgs Merge branch 'kde-applications-15.12' 2015-12-12 18:26:55 -06:00
.gitignore gitignore: pkgs/development/libraries/qt-5/*/tmp/ 2015-02-21 11:39:20 -06:00
.mention-bot mention-bot: blacklist civodul, fixes #11488 2015-12-05 20:23:20 +01:00
.travis.yml travis-ci: use trusty (has 7.5G ram compared to previous 3) 2015-11-02 13:04:03 +01:00
.version .version: remove trailing newline 2015-08-27 00:30:42 +02:00
CONTRIBUTING.md CONTRIBUTING: link to latest hydra build of nixpkgs manual 2015-07-14 10:32:26 +02:00
COPYING * Applying an MIT-style license to Nixpkgs. 2006-04-25 16:50:34 +00:00
default.nix Expose minimum required Nix version. 2015-11-26 23:11:11 +08:00
README.md README: drop 14.12 references 2015-11-16 08:33:45 +01:00

README.md

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Build Status Issue Stats Issue Stats

Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:

% git remote add channels git://github.com/NixOS/nixpkgs-channels.git

For stability and maximum binary package support, it is recommended to maintain custom changes on top of one of the channels, e.g. nixos-15.09 for the latest release and nixos-unstable for the latest successful build of master:

% git remote update channels
% git rebase channels/nixos-15.09

For pull-requests, please rebase onto nixpkgs master.

NixOS linux distribution source code is located inside nixos/ folder.

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