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authorJohn DeNisco <jdenisco@cisco.com>2017-09-27 16:35:23 -0400
committerDave Barach <openvpp@barachs.net>2017-10-11 18:45:41 +0000
commit68b0ee3a38e3a86f0389d8cc695915df190c3dfb (patch)
tree2264f2c552e119cd4bea30ddd8c80600c0c4ae66 /extras/vpp_config/vpplib/VppHugePageUtil.py
parent35830af800aefdcc6a3767bc101b4c300a74651b (diff)
Redhat and small system support
Initial 17.10 commit Final 17.07 cleanup, 17.10 next Added CentOS grub support, this should complete the CentOS support Added Centos install/unistall Added TCP parameters. Change-Id: I064e3a4118969ac36e62924a6a3f8a98f132ba60 Signed-off-by: John DeNisco <jdenisco@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
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diff --git a/extras/vpp_config/vpplib/VppHugePageUtil.py b/extras/vpp_config/vpplib/VppHugePageUtil.py
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+# Copyright (c) 2016 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""VPP Huge Page Utilities"""
+
+import re
+
+from vpplib.VPPUtil import VPPUtil
+
+# VPP Huge page File
+DEFAULT_VPP_HUGE_PAGE_CONFIG_FILENAME = "/etc/vpp/80-vpp.conf"
+VPP_HUGEPAGE_CONFIG = """
+vm.nr_hugepages={nr_hugepages}
+vm.max_map_count={max_map_count}
+vm.hugetlb_shm_group=0
+kernel.shmmax={shmmax}
+"""
+
+
+class VppHugePageUtil(object):
+ """
+ Huge Page Utilities
+ """
+ def hugepages_dryrun_apply(self):
+ """
+ Apply the huge page configuration
+
+ """
+
+ node = self._node
+ hugepages = node['hugepages']
+
+ vpp_hugepage_config = VPP_HUGEPAGE_CONFIG.format(
+ nr_hugepages=hugepages['total'],
+ max_map_count=hugepages['max_map_count'],
+ shmmax=hugepages['shmax'])
+
+ rootdir = node['rootdir']
+ filename = rootdir + node['hugepages']['hugepage_config_file']
+
+ cmd = 'echo "{0}" | sudo tee {1}'.\
+ format(vpp_hugepage_config, filename)
+ (ret, stdout, stderr) = VPPUtil.exec_command(cmd)
+ if ret != 0:
+ raise RuntimeError('{} failed on node {} {} {}'.
+ format(cmd, node['host'],
+ stdout, stderr))
+
+ def get_actual_huge_pages(self):
+ """
+ Get the current huge page configuration
+
+ :returns the hugepage total, hugepage free, hugepage size,
+ total memory, and total memory free
+ :rtype: tuple
+ """
+
+ # Get the memory information using /proc/meminfo
+ cmd = 'sudo cat /proc/meminfo'
+ (ret, stdout, stderr) = VPPUtil.exec_command(cmd)
+ if ret != 0:
+ raise RuntimeError(
+ '{} failed on node {} {} {}'.format(
+ cmd, self._node['host'],
+ stdout, stderr))
+
+ total = re.findall(r'HugePages_Total:\s+\w+', stdout)
+ free = re.findall(r'HugePages_Free:\s+\w+', stdout)
+ size = re.findall(r'Hugepagesize:\s+\w+\s+\w+', stdout)
+ memtotal = re.findall(r'MemTotal:\s+\w+\s+\w+', stdout)
+ memfree = re.findall(r'MemFree:\s+\w+\s+\w+', stdout)
+
+ total = total[0].split(':')[1].lstrip()
+ free = free[0].split(':')[1].lstrip()
+ size = size[0].split(':')[1].lstrip()
+ memtotal = memtotal[0].split(':')[1].lstrip()
+ memfree = memfree[0].split(':')[1].lstrip()
+ return total, free, size, memtotal, memfree
+
+ def show_huge_pages(self):
+ """
+ Print the current huge page configuration
+
+ """
+
+ node = self._node
+ hugepages = node['hugepages']
+ print " {:30}: {}".format("Total System Memory",
+ hugepages['memtotal'])
+ print " {:30}: {}".format("Total Free Memory",
+ hugepages['memfree'])
+ print " {:30}: {}".format("Actual Huge Page Total",
+ hugepages['actual_total'])
+ print " {:30}: {}".format("Configured Huge Page Total",
+ hugepages['total'])
+ print " {:30}: {}".format("Huge Pages Free", hugepages['free'])
+ print " {:30}: {}".format("Huge Page Size", hugepages['size'])
+
+ def get_huge_page_config(self):
+ """
+ Returns the huge page config.
+
+ :returns: The map max count and shmmax
+ """
+
+ total = self._node['hugepages']['total']
+ max_map_count = int(total) * 2 + 1024
+ shmmax = int(total) * 2 * 1024 * 1024
+ return max_map_count, shmmax
+
+ def __init__(self, node):
+ self._node = node