Upload the contribution of vstf as bottleneck network framework.

[bottlenecks.git] / vstf / vstf / agent / equalizer / optimize.py

diff --git a/vstf/vstf/agent/equalizer/optimize.py b/vstf/vstf/agent/equalizer/optimize.py
new file mode 100755 (executable)
index 0000000..941769a
--- /dev/null
+++ b/vstf/vstf/agent/equalizer/optimize.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python
+import commands
+import re
+
+
+# import pdb
+# pdb.set_trace()
+
+class Optimize(object):
+    def __init__(self):
+        pass
+
+    def bind_cpu(self, cpu_range, thread):
+        flag, num = commands.getstatusoutput('taskset -pc %s %s' % (cpu_range, thread))
+        return flag
+
+    def catch_thread_info(self):
+        thread_info = {'fwd_vhost': None, 'src_recv_irq': None, 'dst_send_irq': None}
+        # top -H get the usage info
+        flag, threads_usages = commands.getstatusoutput('top -bH -n1 -c -w 2000')
+        line_array = threads_usages.split('\n')
+        # get highest vhost line
+        for line in line_array:
+            if re.search('vhost-', line) and self._check_thread_usage(line):
+                thread_info['fwd_vhost'] = line.split()[0]
+                break
+        # get highest irq thread as src_recv_irq thread
+        for line in line_array:
+            if re.search('irq/', line) and self._check_thread_usage(line):
+                thread_info['src_recv_irq'] = line.split()[0]
+                line_array.remove(line)
+                break
+        # get the second highest irq thread as dst_send_irq
+        for line in line_array:
+            if re.search('irq/', line) and self._check_thread_usage(line):
+                thread_info['dst_send_irq'] = line.split()[0]
+                break
+        # check the data valid
+
+        for key in thread_info.keys():
+            if thread_info[key] is None:
+                return False, str(thread_info)
+        return True, str(thread_info)
+
+    def _check_thread_usage(self, line):
+        try:
+            usage = line.split()[8]
+            if float(usage) >= 3.0:
+                return True
+            else:
+                print("[ERROR]The highest thread %s is less than 0.05" % usage)
+                return False
+        except:
+            print("[ERROR]The thread usage get failed.")