Function _get_cpu_info_from_sysctl

numexpr3/cpuinfo.py:1552–1606

Returns the CPU info gathered from sysctl. Returns {} if sysctl is not found.

()

def _get_cpu_info_from_sysctl():
	'''
	Returns the CPU info gathered from sysctl.
	Returns {} if sysctl is not found.
	'''
	try:
		# Just return {} if there is no sysctl
		if not DataSource.has_sysctl():
			return {}

		# If sysctl fails return {}
		returncode, output = DataSource.sysctl_machdep_cpu_hw_cpufrequency()
		if output == None or returncode != 0:
			return {}

		# Various fields
		vendor_id = _get_field(False, output, None, None, 'machdep.cpu.vendor')
		processor_brand = _get_field(True, output, None, None, 'machdep.cpu.brand_string')
		cache_size = _get_field(False, output, None, None, 'machdep.cpu.cache.size')
		stepping = _get_field(False, output, int, 0, 'machdep.cpu.stepping')
		model = _get_field(False, output, int, 0, 'machdep.cpu.model')
		family = _get_field(False, output, int, 0, 'machdep.cpu.family')

		# Flags
		flags = _get_field(False, output, None, '', 'machdep.cpu.features').lower().split()
		flags.extend(_get_field(False, output, None, '', 'machdep.cpu.leaf7_features').lower().split())
		flags.extend(_get_field(False, output, None, '', 'machdep.cpu.extfeatures').lower().split())
		flags.sort()

		# Convert from GHz/MHz string to Hz
		scale, hz_advertised = _get_hz_string_from_brand(processor_brand)
		hz_actual = _get_field(False, output, None, None, 'hw.cpufrequency')
		hz_actual = to_hz_string(hz_actual)

		info = {
		'vendor_id' : vendor_id,
		'brand' : processor_brand,

		'hz_advertised' : to_friendly_hz(hz_advertised, scale),
		'hz_actual' : to_friendly_hz(hz_actual, 0),
		'hz_advertised_raw' : to_raw_hz(hz_advertised, scale),
		'hz_actual_raw' : to_raw_hz(hz_actual, 0),

		'l2_cache_size' : to_friendly_bytes(cache_size),

		'stepping' : stepping,
		'model' : model,
		'family' : family,
		'flags' : flags
		}

		info = {k: v for k, v in info.items() if v}
		return info
	except:
		return {}

def _get_cpu_info_from_sysinfo():
	'''