def getCpuUsage():
global lastUsage, lastUsageTime
rusage = getrusage(RUSAGE_SELF)
currentUsage = rusage.ru_utime + rusage.ru_stime
currentTime = time.time()
usageDiff = currentUsage - lastUsage
timeDiff = currentTime - lastUsageTime
if timeDiff == 0: #shouldn't be possible, but I've actually seen a ZeroDivisionError from this
timeDiff = 0.000001
cpuUsagePercent = (usageDiff / timeDiff) * 100.0
lastUsage = currentUsage
lastUsageTime = currentTime
return cpuUsagePercent
import port
import time
import socket
from port import getrusage, RUSAGE_SELF
from twisted.application.service import Service
from twisted.internet.task import LoopingCall
from carbon.conf import settings
stats = {}
prior_stats = {}
HOSTNAME = socket.gethostname().replace('.','_')
PAGESIZE = port.sysconf('SC_PAGESIZE')
rusage = getrusage(RUSAGE_SELF)
lastUsage = rusage.ru_utime + rusage.ru_stime
lastUsageTime = time.time()
# NOTE: Referencing settings in this *top level scope* will
# give you *defaults* only. Probably not what you wanted.
# TODO(chrismd) refactor the graphite metrics hierarchy to be cleaner,
# more consistent, and make room for frontend metrics.
#metric_prefix = "Graphite.backend.%(program)s.%(instance)s." % settings
def increment(stat, increase=1):
try:
stats[stat] += increase
except KeyError:
stats[stat] = increase
