8 log = logging.getLogger(__name__)
11 def run_cmd(cmd, shell=True):
13 ret = subprocess.check_output(cmd, shell=shell)
14 except subprocess.CalledProcessError as e:
19 class Resource(object):
21 super(Resource, self).__init__()
22 self.sysfs = "/sys/devices/system/node"
24 for node in self._init_numa():
25 self.mapping[node] = {}
27 process_mapping = self._get_process_mapping(node)
28 for process_index in xrange(0, len(bin(process_mapping)) - 2):
29 if process_mapping & 1 << process_index != 0:
30 core = self._get_core_id(node, process_index)
31 if not self.mapping[node].has_key(core):
32 self.mapping[node][core] = []
33 self.mapping[node][core].append(process_index)
35 def _get_process_mapping(self, numa_node):
36 ret = run_cmd("cat " + self.sysfs + '/' + numa_node + '/cpumap').replace(',', '').lstrip('0')
39 def _get_core_id(self, numa_node, process_index):
40 cmd = "cat " + self.sysfs + '/' + numa_node + '/cpu' + str(process_index) + '/topology/core_id'
41 return run_cmd(cmd).strip('\n')
44 """the node name is node0, node1......"""
46 node_list = os.listdir(self.sysfs)
47 except Exception as e:
50 partten = re.compile("^node[0-9]{,}$")
51 for node in node_list:
52 if partten.match(node) is None:
58 class Equalizer(Resource):
60 super(Equalizer, self).__init__()