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: / opt / td-agent / embedded / lib / ruby / gems / 2.1.0 / gems / ohai-6.20.0 / lib / ohai / plugins / freebsd /
Filename : memory.rb
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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.
#

provides "memory"

memory Mash.new
memory[:swap] = Mash.new

# /usr/src/sys/sys/vmmeter.h
memory[:page_size] = from("sysctl -n vm.stats.vm.v_page_size")
memory[:page_count] = from("sysctl -n vm.stats.vm.v_page_count")
memory[:total] = memory[:page_size].to_i * memory[:page_count].to_i
memory[:free] = memory[:page_size].to_i * from("sysctl -n vm.stats.vm.v_free_count").to_i
memory[:active] = memory[:page_size].to_i * from("sysctl -n vm.stats.vm.v_active_count").to_i
memory[:inactive] = memory[:page_size].to_i * from("sysctl -n vm.stats.vm.v_inactive_count").to_i
memory[:cache] = memory[:page_size].to_i * from("sysctl -n vm.stats.vm.v_cache_count").to_i
memory[:wired] = memory[:page_size].to_i * from("sysctl -n vm.stats.vm.v_wire_count").to_i
memory[:buffers] = from("sysctl -n vfs.bufspace")

popen4("swapinfo") do |pid, stdin, stdout, stderr|
  stdin.close
  stdout.each 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