def get_memory_size(unit_format='m'):
'''获取内存大小
'''
size = utils.read_one_line("/proc/meminfo").split()[1]
size = "%s%s" % (size, "k")
size = utils.custom_format(size, base=1024, unit_format=unit_format)
return size
def sysctl_kernel(key, value=None):
"""(Very) partial implementation of sysctl, for kernel params"""
if value is not None:
# write
utils.write_one_line('/proc/sys/kernel/%s' % key, str(value))
else:
# read
out = utils.read_one_line('/proc/sys/kernel/%s' % key)
return int(re.search(r'\d+', out).group(0))
def sysctl(key, value=None):
"""Generic implementation of sysctl, to read and write.
:param key: A location under /proc/sys
:param value: If not None, a value to write into the sysctl.
:return: The single-line sysctl value as a string.
"""
path = '/proc/sys/%s' % key
if value is not None:
utils.write_one_line(path, str(value))
return utils.read_one_line(path)
