require 'rubygems' require 'mysqlplus' require 'benchmark' with_gc = Mysql.real_connect('localhost','root','','mysql') without_gc = Mysql.real_connect('localhost','root','','mysql') without_gc.disable_gc = true $gc_stats = [] def countable_gc? GC.respond_to? :count end def gc_counts( label, scope ) $gc_stats << "Objects #{scope} ( #{label} ) #{GC.count}" end def with_gc_counts( label ) gc_counts( label, 'before' ) if countable_gc? yield gc_counts( label, 'after' ) if countable_gc? end n = 1000 Benchmark.bmbm do |x| x.report( 'With GC' ) do with_gc_counts( 'With GC' ) do n.times{ with_gc.c_async_query( 'SELECT * FROM user' ) } end end GC.start x.report( 'Without GC' ) do with_gc_counts( 'Without GC' ) do n.times{ without_gc.c_async_query( 'SELECT * FROM user' ) } end end end puts $gc_stats.join( ' | ' )