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authorChristian Trautman <ctrautma@redhat.com>2016-07-12 12:46:49 -0400
committerChristian Trautman <ctrautma@redhat.com>2016-07-21 13:41:55 -0400
commitf8ebc52a84ac662c6a2a5e8a4775d4a6217e7bb4 (patch)
treebb0401f56e6fbc14d0c92c754be18f3352c0f6d3 /tools/pkt_gen/xena/xena.py
parentf35edfc71ee92d67e6cb587b116b64c3a005ac71 (diff)
xena_deadlock: Fix xena2544.exe deadlock
Fix Xena2544.exe execution with mono where sometimes the Xena process says complete, but the mono process doesn't exit. Changes call of Xena2544.exe from communicate thread lock to a wait try/catch block and checks the log periodically to see if a deadlock has occured and if so, the mono pid is terminated to prevent deadlock. * Fix one small issue with typecasting to int, changed to float JIRA: VSPERF-319 Change-Id: Ie7a86a2b9ff9cdfacba5a912ad17df6cc0581702 Signed-off-by: Christian Trautman <ctrautma@redhat.com>
Diffstat (limited to 'tools/pkt_gen/xena/xena.py')
-rwxr-xr-xtools/pkt_gen/xena/xena.py103
1 files changed, 62 insertions, 41 deletions
diff --git a/tools/pkt_gen/xena/xena.py b/tools/pkt_gen/xena/xena.py
index 7dd4b90b..67e9984f 100755
--- a/tools/pkt_gen/xena/xena.py
+++ b/tools/pkt_gen/xena/xena.py
@@ -25,6 +25,7 @@ Xena Traffic Generator Model
# python imports
import binascii
import logging
+import os
import subprocess
import sys
from time import sleep
@@ -50,6 +51,7 @@ from tools.pkt_gen.xena.XenaDriver import (
XenaManager,
)
+
class Xena(ITrafficGenerator):
"""
Xena Traffic generator wrapper class
@@ -65,6 +67,19 @@ class Xena(ITrafficGenerator):
self._duration = None
self.tx_stats = None
self.rx_stats = None
+ self._log_handle = None
+
+ user_home = os.path.expanduser('~')
+ self._log_path = '{}/Xena/Xena2544-2G/Logs/xena2544.log'.format(
+ user_home)
+
+ # make the folder and log file if they doesn't exist
+ if not os.path.exists(self._log_path):
+ os.makedirs(os.path.dirname(self._log_path))
+
+ # empty the file contents
+ open(self._log_path, 'w').close()
+
@property
def traffic_defaults(self):
@@ -99,7 +114,7 @@ class Xena(ITrafficGenerator):
root[0][1][0][0].get('PortRxBpsL1')) + float(
root[0][1][0][1].get('PortRxBpsL1')))/ 1000000
results[ResultsConstants.THROUGHPUT_RX_PERCENT] = (
- 100 - int(root[0][1][0].get('TotalLossRatioPcnt'))) * float(
+ 100 - float(root[0][1][0].get('TotalLossRatioPcnt'))) * float(
root[0][1][0].get('TotalTxRatePcnt'))/100
results[ResultsConstants.TX_RATE_FPS] = root[0][1][0].get(
'TotalTxRateFps')
@@ -451,6 +466,44 @@ class Xena(ITrafficGenerator):
self.rx_stats = self.xmanager.ports[1].get_rx_stats()
sleep(1)
+ def _start_xena_2544(self):
+ """
+ Start the xena2544 exe.
+ :return: None
+ """
+ args = ["mono", "./tools/pkt_gen/xena/Xena2544.exe", "-c",
+ "./tools/pkt_gen/xena/profiles/2bUsed.x2544", "-e", "-r",
+ "./tools/pkt_gen/xena", "-u",
+ settings.getValue('TRAFFICGEN_XENA_USER')]
+ # Sometimes Xena2544.exe completes, but mono holds the process without
+ # releasing it, this can cause a deadlock of the main thread. Use the
+ # xena log file as a way to detect this.
+ self._log_handle = open(self._log_path, 'r')
+ # read the contents of the log before we start so the next read in the
+ # wait method are only looking at the text from this test instance
+ self._log_handle.read()
+ self.mono_pipe = subprocess.Popen(args, stdout=sys.stdout)
+
+ def _wait_xena_2544_complete(self):
+ """
+ Wait for Xena2544.exe completion.
+ :return: None
+ """
+ data = ''
+ while True:
+ try:
+ self.mono_pipe.wait(60)
+ self._log_handle.close()
+ break
+ except subprocess.TimeoutExpired:
+ # check the log to see if Xena2544 has completed and mono is
+ # deadlocked.
+ data += self._log_handle.read()
+ if 'TestCompletedSuccessfully' in data:
+ self._log_handle.close()
+ self.mono_pipe.terminate()
+ break
+
def _stop_api_traffic(self):
"""
Stop traffic through the socket API
@@ -495,13 +548,11 @@ class Xena(ITrafficGenerator):
See ITrafficGenerator for description
"""
self._duration = duration
-
self._params.clear()
self._params['traffic'] = self.traffic_defaults.copy()
if traffic:
self._params['traffic'] = merge_spec(self._params['traffic'],
traffic)
-
self._start_traffic_api(numpkts)
return self._stop_api_traffic()
@@ -517,7 +568,6 @@ class Xena(ITrafficGenerator):
if traffic:
self._params['traffic'] = merge_spec(self._params['traffic'],
traffic)
-
self._start_traffic_api(-1)
return self._stop_api_traffic()
@@ -533,7 +583,6 @@ class Xena(ITrafficGenerator):
if traffic:
self._params['traffic'] = merge_spec(self._params['traffic'],
traffic)
-
self._start_traffic_api(-1)
def stop_cont_traffic(self):
@@ -554,15 +603,10 @@ class Xena(ITrafficGenerator):
if traffic:
self._params['traffic'] = merge_spec(self._params['traffic'],
traffic)
-
self._setup_json_config(trials, lossrate, '2544_throughput')
+ self._start_xena_2544()
+ self._wait_xena_2544_complete()
- args = ["mono", "./tools/pkt_gen/xena/Xena2544.exe", "-c",
- "./tools/pkt_gen/xena/profiles/2bUsed.x2544", "-e", "-r",
- "./tools/pkt_gen/xena", "-u",
- settings.getValue('TRAFFICGEN_XENA_USER')]
- self.mono_pipe = subprocess.Popen(args, stdout=sys.stdout)
- self.mono_pipe.communicate()
root = ET.parse(r'./tools/pkt_gen/xena/xena2544-report.xml').getroot()
return Xena._create_throughput_result(root)
@@ -578,22 +622,15 @@ class Xena(ITrafficGenerator):
if traffic:
self._params['traffic'] = merge_spec(self._params['traffic'],
traffic)
-
self._setup_json_config(trials, lossrate, '2544_throughput')
-
- args = ["mono", "./tools/pkt_gen/xena/Xena2544.exe", "-c",
- "./tools/pkt_gen/xena/profiles/2bUsed.x2544", "-e", "-r",
- "./tools/pkt_gen/xena", "-u",
- settings.getValue('TRAFFICGEN_XENA_USER')]
- self.mono_pipe = subprocess.Popen(args, stdout=sys.stdout)
+ self._start_xena_2544()
def wait_rfc2544_throughput(self):
"""Wait for and return results of RFC2544 test.
See ITrafficGenerator for description
"""
- self.mono_pipe.communicate()
- sleep(2)
+ self._wait_xena_2544_complete()
root = ET.parse(r'./tools/pkt_gen/xena/xena2544-report.xml').getroot()
return Xena._create_throughput_result(root)
@@ -610,16 +647,9 @@ class Xena(ITrafficGenerator):
if traffic:
self._params['traffic'] = merge_spec(self._params['traffic'],
traffic)
-
self._setup_json_config(trials, lossrate, '2544_b2b')
-
- args = ["mono", "./tools/pkt_gen/xena/Xena2544.exe", "-c",
- "./tools/pkt_gen/xena/profiles/2bUsed.x2544", "-e", "-r",
- "./tools/pkt_gen/xena", "-u",
- settings.getValue('TRAFFICGEN_XENA_USER')]
- self.mono_pipe = subprocess.Popen(
- args, stdout=sys.stdout)
- self.mono_pipe.communicate()
+ self._start_xena_2544()
+ self._wait_xena_2544_complete()
root = ET.parse(r'./tools/pkt_gen/xena/xena2544-report.xml').getroot()
return Xena._create_throughput_result(root)
@@ -630,27 +660,18 @@ class Xena(ITrafficGenerator):
See ITrafficGenerator for description
"""
self._duration = duration
-
self._params.clear()
self._params['traffic'] = self.traffic_defaults.copy()
if traffic:
self._params['traffic'] = merge_spec(self._params['traffic'],
traffic)
-
self._setup_json_config(trials, lossrate, '2544_b2b')
-
- args = ["mono", "./tools/pkt_gen/xena/Xena2544.exe", "-c",
- "./tools/pkt_gen/xena/profiles/2bUsed.x2544", "-e", "-r",
- "./tools/pkt_gen/xena", "-u",
- settings.getValue('TRAFFICGEN_XENA_USER')]
- self.mono_pipe = subprocess.Popen(
- args, stdout=sys.stdout)
+ self._start_xena_2544()
def wait_rfc2544_back2back(self):
"""Wait and set results of RFC2544 test.
"""
- self.mono_pipe.communicate()
- sleep(2)
+ self._wait_xena_2544_complete()
root = ET.parse(r'./tools/pkt_gen/xena/xena2544-report.xml').getroot()
return Xena._create_throughput_result(root)