On 20.03.2012 14:06, Josef Reidinger wrote:
On Tue, 20 Mar 2012 14:00:17 +0100 Stephan Kulow <coolo@suse.de> wrote:
Hi,
Now that I have the initial port of obs api to rails 3 finished, I consider staying forever on rails2 :)
I have this little benchmark that I initially wrote to check if it's worth talking to the API in json instead of the usual XML:
Usually using different xml implementation then rexml in rails help a lot.
prjs = DbProject.find :all x = Benchmark.realtime { prjs.each { |p| p.expand_flags.to_json } } y = Benchmark.realtime { prjs.each { |p| p.to_axml('flagdetails') } puts "#{x} #{y}"
And indeed with rails 2.3.14, it shows json is good: 0.108472093 0.379935258
But now with rails 3.2.1 both are slower ;( 0.515888469 1.334631859
Interesting, I think this deserve investigation why it is. Do you have identic scenario? Could you profile run?
Between the runs I only switch branch, both are working against the same set of fixtures against the same database. Attached are two perftools pictures - the rails32 sample has 62% GC, which appears like madness to me. Greetings, Stephan
