-# Copyright 2015-2016 Intel Corporation.
+# Copyright 2015-2017 Intel Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
from conf import settings
_LOGGER = logging.getLogger(__name__)
-_allocated_hugepages = False
+_ALLOCATED_HUGEPAGES = False
#
# hugepage management
#
"""
hugepage_size_re = re.compile(r'^Hugepagesize:\s+(?P<size_hp>\d+)\s+kB',
re.IGNORECASE)
- with open('/proc/meminfo', 'r') as fh:
- data = fh.readlines()
+ with open('/proc/meminfo', 'r') as result_file:
+ data = result_file.readlines()
for line in data:
match = hugepage_size_re.search(line)
if match:
- _LOGGER.info('Hugepages size: %s', match.group('size_hp'))
+ _LOGGER.info('Hugepages size: %s kb', match.group('size_hp'))
return int(match.group('size_hp'))
- else:
- _LOGGER.error('Could not parse for hugepage size')
- return 0
+ _LOGGER.error('Could not parse for hugepage size')
+ return 0
def allocate_hugepages():
"""
hp_size = get_hugepage_size()
if hp_size > 0:
- nr_hp = int(math.ceil(settings.getValue('HUGEPAGE_RAM_ALLOCATION')/hp_size))
- _LOGGER.info('Will allocate %s hugepages.', nr_hp)
-
- nr_hugepages = 'vm.nr_hugepages=' + str(nr_hp)
- try:
- tasks.run_task(['sudo', 'sysctl', nr_hugepages],
- _LOGGER, 'Trying to allocate hugepages..', True)
- except subprocess.CalledProcessError:
- _LOGGER.error('Unable to allocate hugepages.')
- return False
- global _allocated_hugepages
- _allocated_hugepages = True
- return True
+ nr_hp = int(math.ceil(settings.getValue('HUGEPAGE_RAM_ALLOCATION')/hp_size))
+ _LOGGER.info('Will allocate %s hugepages.', nr_hp)
+
+ nr_hugepages = 'vm.nr_hugepages=' + str(nr_hp)
+ try:
+ tasks.run_task(['sudo', 'sysctl', nr_hugepages],
+ _LOGGER, 'Trying to allocate hugepages..', True)
+ except subprocess.CalledProcessError:
+ _LOGGER.error('Unable to allocate hugepages.')
+ return False
+ # pylint: disable=global-statement
+ global _ALLOCATED_HUGEPAGES
+ _ALLOCATED_HUGEPAGES = True
+ return True
else:
_LOGGER.error('Division by 0 will be supported in next release')
def deallocate_hugepages():
"""De-allocate hugepages that were allocated on the fly
"""
- global _allocated_hugepages
- if _allocated_hugepages:
+ # pylint: disable=global-statement
+ global _ALLOCATED_HUGEPAGES
+ if _ALLOCATED_HUGEPAGES:
nr_hugepages = 'vm.nr_hugepages= 0'
try:
tasks.run_task(['sudo', 'sysctl', nr_hugepages],
except subprocess.CalledProcessError:
_LOGGER.error('Unable to de-allocate hugepages.')
return False
- _allocated_hugepages = False
+ _ALLOCATED_HUGEPAGES = False
return True
meminfo_path = '/sys/devices/system/node/node{}/meminfo'.format(
socket)
else:
- _LOGGER.info('No hugepage info found for socket {}'.format(socket))
+ _LOGGER.info('No hugepage info found for socket %s', socket)
return 0
else:
meminfo_path = '/proc/meminfo'
- with open(meminfo_path, 'r') as fh:
- data = fh.readlines()
+ with open(meminfo_path, 'r') as result_file:
+ data = result_file.readlines()
for line in data:
match = hugepage_free_re.search(line)
if match:
_LOGGER.info('Hugepages free: %s %s', match.group('free_hp'),
'on socket {}'.format(socket) if socket else '')
return int(match.group('free_hp'))
- else:
- _LOGGER.info('Could not parse for hugepage size')
- return 0
+ _LOGGER.info('Could not parse for hugepage size')
+ return 0
def is_hugepage_available():