def read_cpu_wait(data=None):
collectd.debug("Reading: " + repr(data))
for pid, host in discover().items():
# /var/lib/collectd/rrd/kvm_HOST/cpu_kvm/cpu-wait.rrd
M = collectd.Values("gauge")
M.host = "kvm_" + host
M.plugin = "cpu_kvm"
M.type_instance = "cpu_wait"
(user, system) = open("/proc/%s/stat" % pid, 'r').readline().split(' ')[15:17]
M.values = [int(user) + int(system)]
M.dispatch()
def read_cpu(data=None):
collectd.debug("Reading: " + repr(data))
for pid, host in discover().items():
# /var/lib/collectd/rrd/kvm_HOST/cpu_kvm/cpu-usage.rrd
M = collectd.Values("derive") # or try "counter"
M.host = "kvm_" + host
M.plugin = "cpu_kvm"
M.type_instance = "cpu_usage"
# import os
# os.sysconf("SC_CLK_TCK")
(user, system) = open("/proc/%s/stat" % pid, 'r').readline().split(' ')[13:15]
M.values = [int(user) + int(system)]
M.dispatch()
def read_memory(data=None):
collectd.debug("Reading: " + repr(data))
for pid, host in discover().items():
# /var/lib/collectd/rrd/kvm_HOST/memory_kvm/memory-usage.rrd
M = collectd.Values("bytes")
M.host = "kvm_" + host
M.plugin = "memory_kvm"
M.type_instance = "memory_usage"
if os.path.exists("/proc/%s/smaps" % pid):
# slow but probably exact estimate
digester = md5_new()
shared, private, pss = 0, 0, 0
F = open("/proc/%s/smaps" % pid, "rb")
for line in F.readlines():
digester.update(line)
line = line.decode('ascii')
if line.startswith("Shared"):
shared += int(line.split()[1])
elif line.startswith("Private"):
private += int(line.split()[1])
elif line.startswith("Pss"):
pss += 0.5 + float(line.split()[1])
F.close()
if pss > 0:
shared = pss - private
M.values = [1024 * int(private + shared)] # in bytes
else:
# rough, but quick estimate
# I'd use `with` statement, but not sure if it's present in Python 2.6
statm = open("/proc/%s/statm" % pid, "rt")
S = statm.readline().split()
statm.close()
statm = S
shared = int(statm[2]) * PAGESIZE
Rss = int(statm[1]) * PAGESIZE
private = Rss - shared
M.values = [int(private) + int(shared)]
M.dispatch()
def read_io(data=None):
collectd.debug("Reading: " + repr(data))
for pid, host in discover().items():
# /var/lib/collectd/rrd/kvm_HOST/io_kvm/io-{read,write}.rrd
M_read = collectd.Values("counter")
M_read.host = "kvm_" + host
M_read.plugin = "io_kvm"
M_read.type_instance = "io_read"
M_write = collectd.Values("counter")
M_write.host = "kvm_" + host
M_write.plugin = "io_kvm"
M_write.type_instance = "io_write"
for line in open("/proc/%s/io" % pid, "r"):
if "read_bytes" in line:
M_read.values = [int(line.strip().split()[1])]
elif "write_bytes" in line:
M_write.values = [int(line.strip().split()[1])]
M_read.dispatch()
M_write.dispatch()
def read_net(data=None):
collectd.debug("Reading: " + repr(data))
for pid, host in discover().items():
nics = discover_nic(host)
if len(nics) < 1:
continue
# /var/lib/collectd/rrd/kvm_HOST/net_kvm/net-{in,out}.rrd
M_in = collectd.Values("counter")
M_in.host = "kvm_" + host
M_in.plugin = "net_kvm"
M_in.type_instance = "net_in"
M_out = collectd.Values("counter")
M_out.host = "kvm_" + host
M_out.plugin = "net_kvm"
M_out.type_instance = "net_out"
for line in open("/proc/net/dev", "r"):
if nics[0] in line:
s = line.strip().split()[1:]
M_in.values = [s[0]]
M_out.values = [s[8]]
M_in.dispatch()
M_out.dispatch()
