6 # Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 # Copyright(c) 2017 Cavium, Inc. All rights reserved.
10 # Redistribution and use in source and binary forms, with or without
11 # modification, are permitted provided that the following conditions
14 # * Redistributions of source code must retain the above copyright
15 # notice, this list of conditions and the following disclaimer.
16 # * Redistributions in binary form must reproduce the above copyright
17 # notice, this list of conditions and the following disclaimer in
18 # the documentation and/or other materials provided with the
20 # * Neither the name of Intel Corporation nor the names of its
21 # contributors may be used to endorse or promote products derived
22 # from this software without specific prior written permission.
24 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 from __future__ import print_function
41 xrange = range # Python 3
46 base_path = "/sys/devices/system/cpu"
47 fd = open("{}/kernel_max".format(base_path))
48 max_cpus = int(fd.read())
50 for cpu in xrange(max_cpus + 1):
52 fd = open("{}/cpu{}/topology/core_id".format(base_path, cpu))
59 fd = open("{}/cpu{}/topology/physical_package_id".format(base_path, cpu))
60 socket = int(fd.read())
64 if socket not in sockets:
65 sockets.append(socket)
67 if key not in core_map:
69 core_map[key].append(cpu)
71 print(format("=" * (47 + len(base_path))))
72 print("Core and Socket Information (as reported by '{}')".format(base_path))
73 print("{}\n".format("=" * (47 + len(base_path))))
74 print("cores = ", cores)
75 print("sockets = ", sockets)
78 max_processor_len = len(str(len(cores) * len(sockets) * 2 - 1))
79 max_thread_count = len(list(core_map.values())[0])
80 max_core_map_len = (max_processor_len * max_thread_count) \
81 + len(", ") * (max_thread_count - 1) \
82 + len('[]') + len('Socket ')
83 max_core_id_len = len(str(max(cores)))
85 output = " ".ljust(max_core_id_len + len('Core '))
87 output += " Socket %s" % str(s).ljust(max_core_map_len - len('Socket '))
90 output = " ".ljust(max_core_id_len + len('Core '))
92 output += " --------".ljust(max_core_map_len)
97 output = "Core %s" % str(c).ljust(max_core_id_len)
100 output += " " + str(core_map[(s, c)]).ljust(max_core_map_len)
102 output += " " * (max_core_map_len + 1)