def get_affinity_vhost(node, pf_key, skip_cnt=0, cpu_cnt=1):
"""Get affinity for vhost. Result will be used to pin vhost threads.
:param node: Topology node.
:param pf_key: Topology interface.
:param skip_cnt: Amount of CPU cores to skip.
:param cpu_cnt: CPU threads count.
:type node: dict
:type pf_key: str
:type skip_cnt: int
:type cpu_cnt: int
:returns: List of CPUs allocated to vhost process.
:rtype: str
"""
if pf_key:
cpu_node = Topology.get_interface_numa_node(node, pf_key)
else:
cpu_node = 0
smt_used = CpuUtils.is_smt_enabled(node[u"cpuinfo"])
if smt_used:
cpu_cnt = cpu_cnt // CpuUtils.NR_OF_THREADS
return CpuUtils.cpu_slice_of_list_per_node(node,
cpu_node=cpu_node,
skip_cnt=skip_cnt,
cpu_cnt=cpu_cnt,
smt_used=smt_used)
def get_affinity_iperf(node, pf_key, cpu_skip_cnt=0, cpu_cnt=1):
"""Get affinity for iPerf3. Result will be used to pin iPerf3 threads.
:param node: Topology node.
:param pf_key: Topology interface.
:param cpu_skip_cnt: Amount of CPU cores to skip.
:param cpu_cnt: CPU threads count.
:type node: dict
:type pf_key: str
:type cpu_skip_cnt: int
:type cpu_cnt: int
:returns: List of CPUs allocated to iPerf3.
:rtype: str
"""
if pf_key:
cpu_node = Topology.get_interface_numa_node(node, pf_key)
else:
cpu_node = 0
return CpuUtils.cpu_range_per_node_str(node,
cpu_node,
skip_cnt=cpu_skip_cnt,
cpu_cnt=cpu_cnt,
smt_used=False)
