require 'gtk2'

def mem
    IO.readlines('/proc/self/status').join =~ /(VmRSS.*?kB)/
    puts $1
end

puts "After startup:"
mem
puts

puts "Repeated reassigns of about 12.5M with Array.new:"
for i in 1 .. 20
    a = Array.new(3125000)
    mem
end
puts "after GC.start:"
GC.start
mem
puts

puts "Repeated reassigns of about 12.5M with Gdk::Pixbuf.new:"
for i in 1 .. 20
    a = Gdk::Pixbuf.new('/tmp/pa.jpg')
    mem
end
puts "after GC.start:"
GC.start
mem
puts