Function _get_cpu_info_from_proc_cpuinfo

numexpr3/cpuinfo.py:1205–1276

Returns the CPU info gathered from /proc/cpuinfo. Returns {} if /proc/cpuinfo is not found.

()

	return {}

def _get_cpu_info_from_proc_cpuinfo():
	'''
	Returns the CPU info gathered from /proc/cpuinfo.
	Returns {} if /proc/cpuinfo is not found.
	'''
	try:
		# Just return {} if there is no cpuinfo
		if not DataSource.has_proc_cpuinfo():
			return {}

		returncode, output = DataSource.cat_proc_cpuinfo()
		if returncode != 0:
			return {}

		# Various fields
		vendor_id = _get_field(False, output, None, '', 'vendor_id', 'vendor id', 'vendor')
		processor_brand = _get_field(True, output, None, None, 'model name','cpu', 'processor')
		cache_size = _get_field(False, output, None, '', 'cache size')
		stepping = _get_field(False, output, int, 0, 'stepping')
		model = _get_field(False, output, int, 0, 'model')
		family = _get_field(False, output, int, 0, 'cpu family')
		hardware = _get_field(False, output, None, '', 'Hardware')
		# Flags
		flags = _get_field(False, output, None, None, 'flags', 'Features')
		if flags:
			flags = flags.split()
			flags.sort()

		# Convert from MHz string to Hz
		hz_actual = _get_field(False, output, None, '', 'cpu MHz', 'cpu speed', 'clock')
		hz_actual = hz_actual.lower().rstrip('mhz').strip()
		hz_actual = to_hz_string(hz_actual)

		# Convert from GHz/MHz string to Hz
		scale, hz_advertised = (0, None)
		try:
			scale, hz_advertised = _get_hz_string_from_brand(processor_brand)
		except Exception:
			pass

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

		'l3_cache_size' : to_friendly_bytes(cache_size),
		'flags' : flags,
		'vendor_id' : vendor_id,
		'stepping' : stepping,
		'model' : model,
		'family' : family,
		}

		# Make the Hz the same for actual and advertised if missing any
		if not hz_advertised or hz_advertised == '0.0':
			hz_advertised = hz_actual
			scale = 6
		elif not hz_actual or hz_actual == '0.0':
			hz_actual = hz_advertised