tests/integration/scheduler.bats

#!/usr/bin/env bats

load helpers

function setup() {
	requires root
	setup_debian
}

function teardown() {
	teardown_bundle
}

@test "scheduler is applied" {
	update_config ' .process.scheduler = {"policy": "SCHED_DEADLINE", "nice": 19, "priority": 0, "runtime": 42000, "deadline": 1000000, "period": 1000000, }'

	runc run -d --console-socket "$CONSOLE_SOCKET" test_scheduler
	[ "$status" -eq 0 ]

	runc exec test_scheduler chrt -p 1
	[ "$status" -eq 0 ]

	[[ "${lines[0]}" == *"scheduling policy: SCHED_DEADLINE" ]]
	[[ "${lines[1]}" == *"priority: 0" ]]
	[[ "${lines[2]}" == *"runtime/deadline/period parameters: 42000/1000000/1000000" ]]
}

# Checks that runc emits a specific error when scheduling policy is used
# together with specific CPUs. As documented in sched_setattr(2):
#
#   ERRORS:
#   ...
#        EPERM  The CPU affinity mask of the thread specified by pid does not
#        include all CPUs  in  the  system (see sched_setaffinity(2)).
#
@test "scheduler vs cpus" {
	requires smp

	update_config ' .linux.resources.cpu.cpus = "0"
		| .process.scheduler = {"policy": "SCHED_DEADLINE", "nice": 19, "runtime": 42000, "deadline": 1000000, "period": 1000000, }'

	runc run -d --console-socket "$CONSOLE_SOCKET" test_scheduler
	[ "$status" -eq 1 ]
	[[ "$output" == *"process scheduler can't be used together with AllowedCPUs"* ]]
}