def test_bogomips(self):
"""Mock test for mem info."""
bogomips = sysinfo.total_bogomips()
# bogomips : 6385.66
# bogomips : 6384.64
# bogomips : 6385.26
# bogomips : 6384.10
# -------------------
# total : 25539.659999999996
self.assertEqual(25539, bogomips)
def get_cpu_metrics(cpu_usage_delta, time_delta, cpu_shares):
"""calculate cpu percentage and ratio
"""
total_bogomips = sysinfo.total_bogomips()
cpu_count = sysinfo.available_cpu_count()
requested_ratio = float(cpu_shares) / sysinfo.BMIPS_PER_CPU * 100
usage_ratio = ((cpu_usage_delta * total_bogomips) /
(time_delta * cpu_shares) / cpu_count)
usage = ((cpu_usage_delta * total_bogomips) /
(time_delta * sysinfo.BMIPS_PER_CPU) / cpu_count * 100)
return (usage, requested_ratio, usage_ratio)
def cginit(mem, mem_core, cpu):
"""Initialize core and system cgroups."""
total_cpu_shares = int(sysinfo.total_bogomips())
tm_cpu_shares = int(total_cpu_shares * utils.cpu_units(cpu) / 100.0)
system_cpu_shares = int(total_cpu_shares - tm_cpu_shares)
tm_core_cpu_shares = int(tm_cpu_shares * 0.01)
tm_apps_cpu_shares = tm_cpu_shares - tm_core_cpu_shares
_LOGGER.info('Configuring CPU limits: '
'total: %d, '
'treadmill: %d, '
'system: %d, '
'treadmill core: %d, '
'treadmill apps: %d',
total_cpu_shares,
tm_cpu_shares,
system_cpu_shares,
tm_core_cpu_shares,
tm_apps_cpu_shares)
tm_mem = utils.size_to_bytes(mem)
tm_core_mem = utils.size_to_bytes(mem_core)
total_physical_mem = sysinfo.mem_info().total * 1024
if tm_mem <= 0:
# For readability, instead of + tm_mem (negative).
real_tm_mem = total_physical_mem - abs(tm_mem)
else:
real_tm_mem = tm_mem
_LOGGER.info('Configuring memory limits: '
'total: %s, '
'treadmill total: %s, '
'treadmill core: %s',
utils.bytes_to_readable(total_physical_mem, 'B'),
utils.bytes_to_readable(real_tm_mem, 'B'),
utils.bytes_to_readable(tm_core_mem, 'B'))
cgutils.create_treadmill_cgroups(system_cpu_shares,
tm_cpu_shares,
tm_core_cpu_shares,
tm_apps_cpu_shares,
real_tm_mem,
tm_core_mem)
def read_cpu_stats(cgrp):
"""Calculate normalized CPU stats given cgroup name.
Returns tuple of (usage, requested, usage_ratio)
"""
cpu_usage = cgutils.cpu_usage(cgrp)
stat = cgutils.stat('cpuacct', cgrp, 'cpuacct.usage')
delta = time.time() - stat.st_mtime
cgutils.reset_cpu_usage(cgrp)
cpu_shares = cgroups.get_cpu_shares(cgrp)
total_bogomips = sysinfo.total_bogomips()
cpu_count = sysinfo.available_cpu_count()
requested_ratio = cgutils.get_cpu_ratio(cgrp) * 100
usage_ratio = ((cpu_usage * total_bogomips) / (delta * cpu_shares) /
cpu_count)
usage = ((cpu_usage * total_bogomips) / (delta * sysinfo.BMIPS_PER_CPU) /
cpu_count * 100)
return (usage, requested_ratio, usage_ratio)
def test_bogomips(self):
"""Mock test for mem info."""
cpuinfo = """
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
stepping : 9
cpu MHz : 1600.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse
bogomips : 6385.66
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management: [8]
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
stepping : 9
cpu MHz : 1600.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse
bogomips : 6384.64
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management: [8]
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
stepping : 9
cpu MHz : 1600.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 4
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse
bogomips : 6385.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management: [8]
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
stepping : 9
cpu MHz : 1600.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 6
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse
bogomips : 6384.10
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management: [8]
"""
open_mock = mock.mock_open(read_data=cpuinfo.strip())
with mock.patch('builtins.open', open_mock, create=True):
bogomips = sysinfo.total_bogomips()
# bogomips : 6385.66
# bogomips : 6384.64
# bogomips : 6385.26
# bogomips : 6384.10
# -------------------
# total : 25539.659999999996
self.assertEqual(25539, bogomips)