Рисуем графики производительности Solaris с помощью ruby

#!/opt/csw/bin/ruby 

# example gruff script (c) 2007 sunhelp.ru

require 'rubygems' 

require 'gruff'

require 'file/tail'                                                                                           

                                                                                                              

g = Gruff::Line.new('537x255')                                                                                

g.theme = {                                                                                                   

  :colors => %w(blue white red),                                                                              

  :marker_color => 'blue',                                                                                    

 :background_colors => %w(white grey)                                                                         

 }                                                                                                            

time = []                                                                                                     

mem = []                                                                                                      

swap = []                                                                                                     

File::Tail::Logfile.open("/tmp/data", :backward => 5, :break_if_eof => true) do |log|                              

    begin                                                                                                     

        log.tail(5) {|line| array = line.split(' ')                                                           

        time.push(array[0])                                                                                   

        mem.push(array[1].to_i)                                                                               

        swap.push(array[2].to_i)                                                                              

        }                                                                                                     

        rescue File::Tail::BreakException                                                                     

        end                                                                                                   

      end                                                                                                     

g.data("Memory Free (MB)", mem)                                                                               

# g.data("Memory Available Swap Space (MB)",swap)

label_hash={}                                                                                                 

for index in (0...time.length)                                                                                

   label_hash[index] = time[index]                                                                            

  end                                                                                                         

g.labels = label_hash                                                                                         

g.hide_dots = true                                                                                            

g.write('freemem.png')