def _get_vms_cpu_usage():
cpu = dict()
# Get domains' infos
doms = self.node.legacy_server.xend.domains(True)
log.debug("[Legacy-API]", self.node.get_hostname(), "doms=", doms)
# Timestamp used to compute CPU percentage
timestamp = time.time()
# Initialize result with 0 for all vm
# This is because legacy api do not report paused vm
for vm in self.node.get_vms(
nocache
): # 5s of cache is ok, this func is designed to be run every 60s
cpu[vm.name] = 0
for dom in doms:
dom_info = main.parse_doms_info(dom)
try:
# String version with one digit after dot
# See http://stackoverflow.com/questions/56820/round-in-python-doesnt-seem-to-be-rounding-properly for reasons.
#cpu[dom_info['name']]="%.1f" % round(
# (dom_info['cpu_time']-self.cpu_cache[dom_info['name']])*100/(timestamp-self.cpu_cache['timestamp']),1
#)
cpu[dom_info['name']] = (
dom_info['cpu_time'] - self.cpu_cache[dom_info['name']]
) * 100 / (timestamp - self.cpu_cache['timestamp'])
except KeyError: # First call: return zero values
cpu[dom_info['name']] = 0
except ZeroDivisionError:
cpu[dom_info['name']] = 0
# In case of reboot, remove negative values
if cpu[dom_info['name']] < 0:
cpu[dom_info['name']] = 0
# Update cpu_cache with the new value
self.cpu_cache[dom_info['name']] = dom_info['cpu_time']
# Update timestamp
self.cpu_cache['timestamp'] = timestamp
return cpu
def get_vms_cpu_usage(self):
"""
Return a dict with the computed CPU usage for all runing VMs.
Values are floats with 16 digit of precision (python standard's binary float)
If you want a string with less precision, you can use "%.1f" % round(xxx).
If you want a number with less precision, you can use the Decimal module.
"""
cpu = dict()
# Get domains' infos
doms = self.node.legacy_server.xend.domains(True)
if core.cfg["DEBUG"]:
print "DEBUG Legacy-Api: ", doms
# Timestamp used to compute CPU percentage
timestamp = time.time()
for dom in doms:
dom_info = main.parse_doms_info(dom)
try:
# String version with one digit after dot
# See http://stackoverflow.com/questions/56820/round-in-python-doesnt-seem-to-be-rounding-properly for reasons.
# cpu[dom_info['name']]="%.1f" % round(
# (dom_info['cpu_time']-self.cpu_cache[dom_info['name']])*100/(timestamp-self.cpu_cache['timestamp']),1
# )
cpu[dom_info["name"]] = (
(dom_info["cpu_time"] - self.cpu_cache[dom_info["name"]])
* 100
/ (timestamp - self.cpu_cache["timestamp"])
)
except KeyError: # First call: return zero values
cpu[dom_info["name"]] = 0
except ZeroDivisionError:
cpu[dom_info["name"]] = 0
# Update cpu_cache with the new value
self.cpu_cache[dom_info["name"]] = dom_info["cpu_time"]
# Update timestamp
self.cpu_cache["timestamp"] = timestamp
return cpu
def _get_vms_cpu_usage():
cpu=dict()
# Get domains' infos
doms=self.node.legacy_server.xend.domains(True)
log.debug("[Legacy-API]", self.node.get_hostname(), "doms=", doms)
# Timestamp used to compute CPU percentage
timestamp=time.time()
# Initialize result with 0 for all vm
# This is because legacy api do not report paused vm
for vm in self.node.get_vms(nocache): # 5s of cache is ok, this func is designed to be run every 60s
cpu[vm.name]=0
for dom in doms:
dom_info=main.parse_doms_info(dom)
try:
# String version with one digit after dot
# See http://stackoverflow.com/questions/56820/round-in-python-doesnt-seem-to-be-rounding-properly for reasons.
#cpu[dom_info['name']]="%.1f" % round(
# (dom_info['cpu_time']-self.cpu_cache[dom_info['name']])*100/(timestamp-self.cpu_cache['timestamp']),1
#)
cpu[dom_info['name']]=(dom_info['cpu_time']-self.cpu_cache[dom_info['name']])*100/(timestamp-self.cpu_cache['timestamp'])
except KeyError: # First call: return zero values
cpu[dom_info['name']]=0
except ZeroDivisionError:
cpu[dom_info['name']]=0
# In case of reboot, remove negative values
if cpu[dom_info['name']] < 0:
cpu[dom_info['name']]=0
# Update cpu_cache with the new value
self.cpu_cache[dom_info['name']]=dom_info['cpu_time']
# Update timestamp
self.cpu_cache['timestamp']=timestamp
return cpu
def get_vms_cpu_usage(self):
"""
Return a dict with the computed CPU usage for all runing VMs.
Values are floats with 16 digit of precision (python standard's binary float)
If you want a string with less precision, you can use "%.1f" % round(xxx).
If you want a number with less precision, you can use the Decimal module.
"""
cpu = dict()
# Get domains' infos
doms = self.node.legacy_server.xend.domains(True)
if core.cfg['DEBUG']: print "DEBUG Legacy-Api: ", doms
# Timestamp used to compute CPU percentage
timestamp = time.time()
for dom in doms:
dom_info = main.parse_doms_info(dom)
try:
# String version with one digit after dot
# See http://stackoverflow.com/questions/56820/round-in-python-doesnt-seem-to-be-rounding-properly for reasons.
#cpu[dom_info['name']]="%.1f" % round(
# (dom_info['cpu_time']-self.cpu_cache[dom_info['name']])*100/(timestamp-self.cpu_cache['timestamp']),1
#)
cpu[dom_info['name']] = (
dom_info['cpu_time'] - self.cpu_cache[dom_info['name']]
) * 100 / (timestamp - self.cpu_cache['timestamp'])
except KeyError: # First call: return zero values
cpu[dom_info['name']] = 0
except ZeroDivisionError:
cpu[dom_info['name']] = 0
# Update cpu_cache with the new value
self.cpu_cache[dom_info['name']] = dom_info['cpu_time']
# Update timestamp
self.cpu_cache['timestamp'] = timestamp
return cpu
