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#!/usr/bin/env python
#
# BSD LICENSE
#
# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
# Copyright(c) 2017 Cavium Networks Ltd. All rights reserved.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Intel Corporation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
from __future__ import print_function
import sys
try:
xrange # Python 2
except NameError:
xrange = range # Python 3
sockets = []
cores = []
core_map = {}
base_path = "/sys/devices/system/cpu"
fd = open("{}/kernel_max".format(base_path))
max_cpus = int(fd.read())
fd.close()
for cpu in xrange(max_cpus + 1):
try:
fd = open("{}/cpu{}/topology/core_id".format(base_path, cpu))
except IOError:
continue
except:
break
core = int(fd.read())
fd.close()
fd = open("{}/cpu{}/topology/physical_package_id".format(base_path, cpu))
socket = int(fd.read())
fd.close()
if core not in cores:
cores.append(core)
if socket not in sockets:
sockets.append(socket)
key = (socket, core)
if key not in core_map:
core_map[key] = []
core_map[key].append(cpu)
print(format("=" * (47 + len(base_path))))
print("Core and Socket Information (as reported by '{}')".format(base_path))
print("{}\n".format("=" * (47 + len(base_path))))
print("cores = ", cores)
print("sockets = ", sockets)
print("")
max_processor_len = len(str(len(cores) * len(sockets) * 2 - 1))
max_thread_count = len(list(core_map.values())[0])
max_core_map_len = (max_processor_len * max_thread_count) \
+ len(", ") * (max_thread_count - 1) \
+ len('[]') + len('Socket ')
max_core_id_len = len(str(max(cores)))
output = " ".ljust(max_core_id_len + len('Core '))
for s in sockets:
output += " Socket %s" % str(s).ljust(max_core_map_len - len('Socket '))
print(output)
output = " ".ljust(max_core_id_len + len('Core '))
for s in sockets:
output += " --------".ljust(max_core_map_len)
output += " "
print(output)
for c in cores:
output = "Core %s" % str(c).ljust(max_core_id_len)
for s in sockets:
if (s,c) in core_map:
output += " " + str(core_map[(s, c)]).ljust(max_core_map_len)
else:
output += " " * (max_core_map_len + 1)
print(output)
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