[ruby-core:30224] [Bug #1560] multi core operations are slower on trunk (possible regression)

Issue #1560 has been updated by Roger Pack.


> We should not call Time.new in busy loop if performance is needed.

Oh ok so the actual problem was that Time.new is slower now (which is expected, it appears?)

Ok.

I did note that it is currently "hard" for busy threads to be interrupted.  Don't know if that is expected:

ex:

require 'timeout'
start = Time.now
threads = []
4.times {
threads <<Thread.new {
  begin
       Timeout.timeout(1) do
         while true do
         end
       end
     rescue Timeout::Error
     end
     
     }}
     threads.each(&:join)
puts Time.now - start

(should output about 1.0, outputs about 1.2 with 1.9.1 and 1.9.3dev)

Is that worthy of a ticket?
If so let me know.
Thanks.
-rp
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http://redmine.ruby-lang.org/issues/show/1560

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