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-rwxr-xr-xusertools/cpu_layout.py103
1 files changed, 103 insertions, 0 deletions
diff --git a/usertools/cpu_layout.py b/usertools/cpu_layout.py
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--- /dev/null
+++ b/usertools/cpu_layout.py
@@ -0,0 +1,103 @@
+#!/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)