Munin contributed plugins

#!/usr/bin/env ruby

#   A munin plugin for Linux to monitor how many threads per thin process

# For Linux ONLY !

# DOES NOT WORK on OSX, Solaris or BSD.

# only linux, because this script relies on proc filesystem

#   Frederico de Souza Araujo - fred.the.master@gmail.com

#   http://www.frederico-araujo.com

#

#   http://www.furbism.com

#

# Originally based on:

#       each individual thin process

#   by Ben VandenBos and Avvo, Inc.

#

# This program is free software; you can redistribute it and/or modify

# as published by the Free Software Foundation.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License along

# with this program; if not, write to the Free Software Foundation, Inc.,

# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

module Munin

  class ThinThreads

    def run

      instances = get_pids()

      instances.each do |instance|

        puts "thin_#{port}.value #{rss}"

      end

    end

    # only get threads count for each pid

    # Using Proc filesystem

    # ONLY LINUX! because relies on proc filesystem

        return res

      end

    end

    # fetch all pids that match thin

    def get_pids

      pids = `pgrep -f 'thin' -l | awk -F " " '{ if (substr( $4, 10, 4)>=1) print $1"|"substr( $4, 10, 4)}' | sort -t'|' -nk 2`.split(/\r?\n/)

    def autoconf

      get_pids().length > 0

    end

  end

end

  puts "graph_scale yes"

  puts "graph_info Tracks how many threads per thin processes"

  mpm.get_pids.each do |instance|

    puts "thin_#{port}.label thin_#{port}"

    puts "thin_#{port}.info Threads per Thin process"

    puts "thin_#{port}.type GAUGE"