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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( ' | ' )
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