bm_gc_deep.rb

# create objects that have deep references.
GC::Profiler.enable

depth = ARGV.pop
depth ||= 240
depth = depth.to_i
def make_deep_obj(parent, level, max)
  if level > max
    parent << "e".dup
    return
  end
  parent << []
  make_deep_obj(parent.last, level+1, max)
end

@roots = []
100000.times do
  a = []
  make_deep_obj(a, 0, depth)
  @roots << a
end

GC::Profiler.report
p GC::Profiler.total_time
p GC.count