(4th attempt at posting: The prior 3 attempts were posts to the email@example.com mailing list ... which certainly *used* to work.) Does Ruby 2.0 run more than one thread at a time? The documentation I have says that Ruby 1.9 does not. From what I've read I'm presuming the answer is no, so are there any plans to remove this limitation?
on 2013-03-13 01:08
on 2013-03-13 01:23
On Tue, Mar 12, 2013 at 5:09 PM, Charles Hixson <firstname.lastname@example.org>wrote: > Does Ruby 2.0 run more than one thread at a time? The documentation I > have says that Ruby 1.9 does not. You're talking about the Global Interpreter Lock or GIL (also known as the Global VM Lock, or GVL) The answer is no, Ruby 2.0 does not remove the GIL, and there are not plans to remove it at this time. Note that this lock does not preclude you from carrying out I/O-related tasks in parallel. It only limits multicore operation (i.e. multiple cores running Ruby code) That said, JRuby, Rubinius, and other Ruby VMs provide true thread-level parallelism via GIL-free operation and are "multicore-aware"
on 2013-03-13 01:53
This limitation doesn't exist in JRuby (I'm not sure about the other implementations). I imagine that the guys from MRI team want to remove the Global Interpreter/VM lock, but from what I've read it isn't something trivial. I'd love to be able to help, but I don't know enough (yet). :( ----- Carlos Agarie Skype: carlos.agarie Control engineering Polytechnic School, University of So Paulo, Brazil Computer engineering Embry-Riddle Aeronautical University, USA 2013/3/12 Charles Hixson <email@example.com>