regression: stateless CPU benchmark for profiles

1 files changed, 46 insertions, 0 deletions

diff --git a/scripts/automation/regression/stateless_tests/stl_benchmark_test.py b/scripts/automation/regression/stateless_tests/stl_benchmark_test.py
new file mode 100755
index 00000000..65efa55e
--- /dev/null
+++ b/scripts/automation/regression/stateless_tests/stl_benchmark_test.py
@@ -0,0 +1,46 @@
+#!/router/bin/python
+from .stl_general_test import CStlGeneral_Test, CTRexScenario
+from trex_stl_lib.api import *
+import os, sys
+from collections import deque
+from time import time, sleep
+
+class STLBenchmark_Test(CStlGeneral_Test):
+    """Benchark stateless performance"""
+
+    def test_CPU_benchmark(self):
+        timeout   = 30 # max time to wait for stabilization
+        stabilize = 5  # ensure stabilization over this period
+
+        for profile_bench in self.get_benchmark_param('profiles'):
+            cpu_utils = deque([0] * stabilize, maxlen = stabilize)
+            kwargs = profile_bench.get('kwargs', {})
+            print('Testing profile %s, kwargs: %s' % (profile_bench['name'], kwargs))
+            profile = STLProfile.load(os.path.join(CTRexScenario.scripts_path, profile_bench['name']), port_id = 0, **kwargs)
+
+            self.stl_trex.reset()
+            self.stl_trex.clear_stats()
+            self.stl_trex.add_streams(profile, ports = [0, 1])
+            self.stl_trex.start(ports = [0, 1], mult = '10%')
+            start_time = time()
+
+            for i in range(timeout + 1):
+                stats = self.stl_trex.get_stats()
+                cpu_utils.append(stats['global']['cpu_util'])
+                print stats['global']['cpu_util']
+                if i > stabilize and min(cpu_utils) > max(cpu_utils) * 0.98 - 0.1:
+                    break
+                sleep(0.5)
+
+            if i == timeout:
+                raise Exception('Timeout on waiting for stabilization, CPU util values: %s' % cpu_utils)
+            if stats[0]['opackets'] < 10000 or stats[1]['opackets'] < 10000:
+                raise Exception('Too few opackets, port0: %s, port1: %s' % (stats[0]['opackets'], stats[1]['opackets']))
+            print stats['global']
+            if stats['global']['queue_full'] > 100000:
+                raise Exception('Too much queue_full: %s' % stats['global']['queue_full'])
+
+            bw_per_core = 100 * stats['global']['tx_bps'] / cpu_utils[-1] / 1e6
+            print('Done (%ss), CPU util: %4g, bw_per_core: %6sMb/core' % (int(time() - start_time), cpu_utils[-1], int(bw_per_core)))
+
+