def findDynamipsCpuUsage(self):
""" Asks Dynamips for its CPU usage
"""
ret = long(0.0)
usage = lib.send(globals.GApp.dynagen.devices[self.router.hostname].dynamips, 'vm cpu_usage %s 0' % self.router.hostname)
if usage[1] == "100-OK":
if usage[0].lstrip('101 '):
ret = long(usage[0].lstrip('101 '))
else:
ret = 0.0
else:
ret = -1
if ret < 0:
QtGui.QMessageBox.critical(globals.GApp.mainWindow, "CalcIDLEPCDialog", "Negative return")
return ret
def calcIdlePC(self):
""" Calculate optimal IdlePC value
"""
timeout = 4 # time in seconds for testing the cpu usage of an idlepc value
success = False
# Stop all nodes to gather CPU statistics
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "Stopping all devices and creating test node...") + '</font>')
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
for item in globals.GApp.topology.nodes.values():
if isinstance(item, IOSRouter) or isinstance(item, AnyEmuDevice) or isinstance(item, AnyVBoxEmuDevice):
item.stopNode()
self.iosDialog.slotSaveIOS()
for symbol in SYMBOLS:
if symbol['name'] == "Router " + str(self.iosDialog.comboBoxPlatform.currentText()):
self.router = symbol['object'](QtSvg.QSvgRenderer(symbol['normal_svg_file']), QtSvg.QSvgRenderer(symbol['select_svg_file']))
selected_image_name = unicode(self.iosDialog.lineEditIOSImage.text()).strip()
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "Starting calculation to find an Idle PC value for IOS image: %s" % selected_image_name) + '</font>')
image_to_use = None
for (image, conf) in globals.GApp.iosimages.iteritems():
if conf.filename == selected_image_name:
image_to_use = image
if image_to_use == None:
self.textEdit.append('<font color="red">' + translate("CalcIDLEPCDialog", "IOS image %s is not registered! Please save the settings first" % selected_image_name) + '</font>')
break
globals.GApp.topology.addNode(self.router, False, image_to_use)
try:
self.router.startNode()
except:
self.iosDialog.label_IdlePCWarning.setText('<font color="red">' + translate("IOSDialog", "Cannot start the test node...") + '</font>')
break
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "Giving some time for the router to boot...") + '</font>')
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
time.sleep(20)
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
if globals.GApp.dynagen.devices[self.router.hostname].idlepc != None:
reply = QtGui.QMessageBox.question(self, translate("CalcIDLEPCDialog", "Message"), translate("CalcIDLEPCDialog", "There is already an Idle PC value specified for this IOS, do you want to test it?"),
QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
if reply == QtGui.QMessageBox.Yes:
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "Checking CPU usage with current Idle PC value...") + '</font>')
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
start = time.time()
cpuStart = self.findDynamipsCpuUsage()
count = 0
while count < timeout:
time.sleep(1)
self.progressBar.setValue(self.progressBar.value() + (100 / timeout))
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
count += 1
self.progressBar.setValue(100)
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
elapsed = time.time() - start
cpuElapsed = self.findDynamipsCpuUsage() - cpuStart
cpuUsage = abs(cpuElapsed * 100.0 / elapsed)
if cpuUsage > 100:
cpuUsage = 100
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "CPU usage: " + str(int(cpuUsage)) + "%") + '</font>')
if cpuUsage < 85.0:
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
reply = QtGui.QMessageBox.question(self, translate("CalcIDLEPCDialog", "Message"), translate("CalcIDLEPCDialog", "This Idle PC value seems to work, do you want to keep it?"),
QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
if reply == QtGui.QMessageBox.Yes:
self.cleanUp()
self.reject()
return
else:
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "This value doesn't seem to work. Continuing...") + '</font>')
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
# reset Idle PC value
lib.send(globals.GApp.dynagen.devices[self.router.hostname].dynamips, 'vm set_idle_pc_online %s 0 %s' % (self.router.hostname, '0x00000000'))
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "Getting Idle PC values from Dynamips...") + '</font>')
self.progressBar.setValue(0)
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
# getting dynagen's idlepc calculation results
result = globals.GApp.dynagen.devices[self.router.hostname].idleprop(lib.IDLEPROPGET)
# remove the '100-OK' line
result.pop()
idles = []
for line in result:
(value, count) = line.split()[1:]
# Sort table, best values first - if existing
iCount = int(count[1:-1])
if 50 < iCount < 60:
idles.insert(0, value)
else:
idles.append(value)
length = len(idles)
if length == 0:
QtGui.QMessageBox.critical(globals.GApp.mainWindow, 'CalcIDLEPCDialog', "Dynamips didn't find any Idle PC value. It happens sometimes, please try again.")
self.iosDialog.label_IdlePCWarning.setText('<font color="red">' + translate("IOSDialog", "Dynamips didn't find any Idle PC value. It happens sometimes, please try again."))
self.cleanUp()
self.reject()
return
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "Found " + str(length) + " possible values. The test will last at most " + str(length * timeout) + " seconds.") + '</font>')
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
# Apply the IDLE PC to the router
progress = 0.0
self.progressBar.setValue(0)
incr = 100.0 / float(length) / float(timeout)
for line in idles:
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
try:
for node in globals.GApp.topology.nodes.values():
if success == True:
break
if isinstance(node, IOSRouter) and node.hostname == self.router.hostname:
dyn_router = node.get_dynagen_device()
if globals.GApp.systconf['dynamips'].HypervisorManager_binding == '0.0.0.0':
host = '0.0.0.0'
else:
host = dyn_router.dynamips.host
if globals.GApp.iosimages.has_key(host + ':' + dyn_router.image):
image = globals.GApp.iosimages[host + ':' + dyn_router.image]
image.idlepc = line
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "Applying Idle PC value " + line + " and monitoring CPU usage...") + '</font>')
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
lib.send(globals.GApp.dynagen.devices[self.router.hostname].dynamips, 'vm set_idle_pc_online %s 0 %s' % (self.router.hostname, line))
start = time.time()
cpuStart = self.findDynamipsCpuUsage()
count = 0
while count < timeout:
time.sleep(1)
progress += incr
self.progressBar.setValue(int(progress))
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
count += 1
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
cpuUsage = 100.0
elapsed = time.time() - start
cpuElapsed = self.findDynamipsCpuUsage() - cpuStart
cpuUsage = abs(cpuElapsed * 100.0 / elapsed)
if cpuUsage > 100:
cpuUsage = 100
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "CPU usage: " + str(int(cpuUsage)) + "%") + '</font>')
if cpuUsage < 70.0:
self.iosDialog.lineEditIdlePC.setText(line)
self.textEdit.append('<font color="gray">' + translate("CalcIDLEPCDialog", "Working Idle PC value found. Applying to other devices using this IOS image...") + '</font>')
# Apply idle pc to devices with the same IOS image
for device in globals.GApp.topology.nodes.values():
if isinstance(device, IOSRouter) and device.config['image'] == image.filename:
device.get_dynagen_device().idlepc = line
config = device.get_config()
config['idlepc'] = line
device.set_config(config)
device.setCustomToolTip()
success = True
except lib.DynamipsError, msg:
QtGui.QMessageBox.critical(self, translate("CalcIDLEPCDialog", "Dynamips error"), unicode(msg))
return
self.progressBar.setValue(100)
self.pushButton.setText(QtGui.QApplication.translate("CalcIDLEPCDialog", "Close", None, QtGui.QApplication.UnicodeUTF8))
globals.GApp.processEvents(QtCore.QEventLoop.AllEvents | QtCore.QEventLoop.WaitForMoreEvents, 1000)
