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54 lines
1.6 KiB
Ruby
Executable file
54 lines
1.6 KiB
Ruby
Executable file
#!/usr/bin/env ruby
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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class SwapUsage
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def initialize(options)
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@processes = {}
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@reverse = options[:reverse]
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@number = options[:number]
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end
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def get_processes
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Dir['/proc/[0-9]*'].map do |pid_dir|
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begin
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pid = File.basename(pid_dir).to_i
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cmd = File.read("#{pid_dir}/cmdline").tr("\x00", ' ').strip
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swap = File.read("#{pid_dir}/status")[/^VmSwap:\s+([0-9]+)\s+kB$/, 1].to_i
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@processes[pid] = { cmd: cmd, swap: swap } if swap.positive?
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rescue Errno::ENOENT
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next
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end
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end
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end
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def show
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@processes = @processes.sort_by { |_, v| v[:swap] }
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@processes = @processes.reverse if @reverse
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@processes = @processes.first(@number) if @number
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@processes.each do |pid, values|
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puts "#{values[:swap]} kB [#{pid}] #{values[:cmd]}"
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end
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end
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def run
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get_processes
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show
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end
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end
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