from conf import settings
_LOGGER = logging.getLogger(__name__)
-
+_allocated_hugepages = False
#
# hugepage management
#
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')
"""Allocate hugepages on the fly
"""
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_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_hugepages = 'vm.nr_hugepages=' + str(nr_hp)
+ else:
+ _LOGGER.error('Division by 0 will be supported in next release')
+ return False
+
+def deallocate_hugepages():
+ """De-allocate hugepages that were allocated on the fly
+ """
+ global _allocated_hugepages
+ if _allocated_hugepages:
+ nr_hugepages = 'vm.nr_hugepages= 0'
try:
tasks.run_task(['sudo', 'sysctl', nr_hugepages],
- _LOGGER, 'Trying to allocate hugepages..', True)
+ _LOGGER, 'Trying to de-allocate hugepages..', True)
except subprocess.CalledProcessError:
- _LOGGER.error('Unable to allocate hugepages.')
+ _LOGGER.error('Unable to de-allocate hugepages.')
return False
- return True
-
- else:
- _LOGGER.error('Division by 0 will be supported in next release')
- return False
+ _allocated_hugepages = False
+ return True
def get_free_hugepages(socket=None):
except subprocess.CalledProcessError:
_LOGGER.error('Unable to umount hugepages.')
-
+ if not deallocate_hugepages():
+ _LOGGER.error('Unable to deallocate previously allocated hugepages.')