Fixed(RPS): some processors have inverted CPU masks so RPS could work…

… on foreign NUMA's cpus

netutils_linux_tuning/auto_softirq_tune.py

@@ -72,18 +72,31 @@ def cpus2mask(cpus, cpus_count):
  bitmap[cpu] = 1
  return hex(int(''.join([str(cpu) for cpu in bitmap]), 2))[2:] # no need to write 0x
 
+ def cpus_sys_local(self):
+ cpus_local_file = '/sys/class/net/{0}/device/local_cpus'.format(self.options.dev)
+ if not os.path.isfile(cpus_local_file):
+ return
+ with open(cpus_local_file, 'r') as fd:
+ return fd.read().strip()
+
  def mask_detect(self):
  """
  Finds a way to calculate CPU mask to apply:
  1. --cpu-mask
  2. --cpus
  3. topology.layout
  """
+ mask = None
  if self.options.cpu_mask:
  return
  if not self.options.cpus:
- self.options.cpus = self.cpus_detect_real()
- self.options.cpu_mask = self.cpus2mask(self.options.cpus, len(self.topology.socket_layout.keys()))
+ mask = self.cpus_sys_local()
+ if mask:
+ self.options.cpu_mask = mask
+ else:
+ self.options.cpus = self.cpus_detect_real()
+ if not mask:
+ self.options.cpu_mask = self.cpus2mask(self.options.cpus, len(self.topology.socket_layout.keys()))
 
  def detect_queues_real(self):
  """

setup.py

@@ -16,7 +16,7 @@ def read(*paths):
 
 setuptools.setup(
  name='netutils-linux',
- version='2.7.7',
+ version='2.7.8',
  author='Oleg Strizhechenko',
  author_email='[email protected]',
  license='MIT',