def enable_coredump_limit_vpp(self, node):
"""Enable coredump for VPP PID by setting no core limits on DUT
if setting of core limit by this library is enabled.
:param node: DUT Node in the topology.
:type node: dict
"""
if node[u"type"] == NodeType.DUT and self.is_core_limit_enabled():
vpp_pid = DUTSetup.get_pid(node, u"vpp")
self.enable_coredump_limit(node, vpp_pid)
def start_hoststack_test_program(node, namespace, core_list, program):
"""Start the specified HostStack test program.
:param node: DUT node.
:param namespace: Net Namespace to run program in.
:param core_list: List of cpu's to pass to taskset to pin the test
program to a different set of cores on the same numa node as VPP.
:param program: Test program.
:type node: dict
:type namespace: str
:type core_list: str
:type program: dict
:returns: Process ID
:rtype: int
:raises RuntimeError: If node subtype is not a DUT or startup failed.
"""
if node[u"type"] != u"DUT":
raise RuntimeError(u"Node type is not a DUT!")
program_name = program[u"name"]
DUTSetup.kill_program(node, program_name, namespace)
if namespace == u"default":
shell_cmd = u"sh -c"
else:
shell_cmd = f"ip netns exec {namespace} sh -c"
env_vars = f"{program[u'env_vars']} " if u"env_vars" in program else u""
args = program[u"args"]
program_path = program.get(u"path", u"")
# NGINX used `worker_cpu_affinity` in configuration file
taskset_cmd = u"" if program_name == u"nginx" else \
f"taskset --cpu-list {core_list}"
cmd = f"nohup {shell_cmd} \'{env_vars}{taskset_cmd} " \
f"{program_path}{program_name} {args} >/tmp/{program_name}_" \
f"stdout.log 2>/tmp/{program_name}_stderr.log &\'"
try:
exec_cmd_no_error(node, cmd, sudo=True)
return DUTSetup.get_pid(node, program_name)[0]
except RuntimeError:
stdout_log, stderr_log = \
HoststackUtil.get_hoststack_test_program_logs(node,
program)
raise RuntimeError(f"Start {program_name} failed!\nSTDERR:\n" \
f"{stderr_log}\nSTDOUT:\n{stdout_log}")
return None
