diff --git a/netutils_linux_tuning/auto_softirq_tune.py b/netutils_linux_tuning/auto_softirq_tune.py
index dd65e0c..a9b8107 100644
--- a/netutils_linux_tuning/auto_softirq_tune.py
+++ b/netutils_linux_tuning/auto_softirq_tune.py
@@ -72,6 +72,13 @@ 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:
@@ -79,11 +86,17 @@ def mask_detect(self):
         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):
         """
diff --git a/setup.py b/setup.py
index 578435c..d4a096a 100644
--- a/setup.py
+++ b/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='oleg.strizhechenko@gmail.com',
     license='MIT',