/usr/lib/ruby/vendor_ruby/ohai/plugins/freebsd/memory.rb is in ohai 8.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Author:: Bryan McLellan (btm@loftninjas.org)
# Copyright:: Copyright (c) 2009 Bryan McLellan
# License:: Apache License, Version 2.0
#
# 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.
#
Ohai.plugin(:Memory) do
provides "memory", "memory/swap"
collect_data(:freebsd) do
memory Mash.new
memory[:swap] = Mash.new
# /usr/src/sys/sys/vmmeter.h
so = shell_out("sysctl -n vm.stats.vm.v_page_size")
memory[:page_size] = so.stdout.split($/)[0]
so = shell_out("sysctl -n vm.stats.vm.v_page_count")
memory[:page_count] = so.stdout.split($/)[0]
memory[:total] = memory[:page_size].to_i * memory[:page_count].to_i
so = shell_out("sysctl -n vm.stats.vm.v_free_count")
memory[:free] = memory[:page_size].to_i * so.stdout.split($/)[0].to_i
so = shell_out("sysctl -n vm.status.vm.v_active_count")
memory[:active] = memory[:page_size].to_i * so.stdout.split($/)[0].to_i
so = shell_out("sysctl -n vm.status.vm.v_inactive_count")
memory[:inactive] = memory[:page_size].to_i * so.stdout.split($/)[0].to_i
so = shell_out("sysctl -n vm.stats.vm.v_cache_count")
memory[:cache] = memory[:page_size].to_i * so.stdout.split($/)[0].to_i
so = shell_out("sysctl -n vm.stats.vm.v_wire_count")
memory[:wired] = memory[:page_size].to_i * so.stdout.split($/)[0].to_i
so = shell_out("sysctl -n vfs.bufspace")
memory[:buffers] = so.stdout.split($/)[0]
so = shell_out("swapinfo")
so.stdout.lines do |line|
# Device 1K-blocks Used Avail Capacity
# /dev/ad0s1b 253648 0 253648 0%
if line =~ /^([\d\w\/]+)\s+(\d+)\s+(\d+)\s+(\d+)\s+([\d\%]+)/
mdev = $1
memory[:swap][mdev] = Mash.new
memory[:swap][mdev][:total] = $2
memory[:swap][mdev][:used] = $3
memory[:swap][mdev][:free] = $4
memory[:swap][mdev][:percent_free] = $5
end
end
end
end
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