38 lines
1.3 KiB
Nix
38 lines
1.3 KiB
Nix
|
import ./make-test-python.nix ({ pkgs, ... }:
|
||
|
|
|
||
|
|
{
|
||
|
|
name = "systemd-oomd";
|
||
|
|
|
||
|
|
nodes.machine = { pkgs, ... }: {
|
||
|
|
systemd.oomd.extraConfig.DefaultMemoryPressureDurationSec = "1s"; # makes the test faster
|
||
|
|
# Kill cgroups when more than 1% pressure is encountered
|
||
|
|
systemd.slices."-".sliceConfig = {
|
||
|
|
ManagedOOMMemoryPressure = "kill";
|
||
|
|
ManagedOOMMemoryPressureLimit = "1%";
|
||
|
|
};
|
||
|
|
# A service to bring the system under memory pressure
|
||
|
|
systemd.services.testservice = {
|
||
|
|
serviceConfig.ExecStart = "${pkgs.coreutils}/bin/tail /dev/zero";
|
||
|
|
};
|
||
|
|
# Do not kill the backdoor
|
||
|
|
systemd.services.backdoor.serviceConfig.ManagedOOMMemoryPressure = "auto";
|
||
|
|
|
||
|
|
virtualisation.memorySize = 1024;
|
||
|
|
};
|
||
|
|
|
||
|
|
testScript = ''
|
||
|
|
# Start the system
|
||
|
|
machine.wait_for_unit("multi-user.target")
|
||
|
|
machine.succeed("oomctl")
|
||
|
|
|
||
|
|
# Bring the system into memory pressure
|
||
|
|
machine.succeed("echo 0 > /proc/sys/vm/panic_on_oom") # NixOS tests kill the VM when the OOM killer is invoked - override this
|
||
|
|
machine.succeed("systemctl start testservice")
|
||
|
|
|
||
|
|
# Wait for oomd to kill something
|
||
|
|
# Matches these lines:
|
||
|
|
# systemd-oomd[508]: Killed /system.slice/systemd-udevd.service due to memory pressure for / being 3.26% > 1.00% for > 1s with reclaim activity
|
||
|
|
machine.wait_until_succeeds("journalctl -b | grep -q 'due to memory pressure for'")
|
||
|
|
'';
|
||
|
|
})
|