Re: Threads, Sockets and OSX

On 12/6/18 1:16 AM, Peter Hickman wrote:
> Using RVM on OSX I've tested this for 2.3.3 and 2.5.1 with no 
> significant change in the behaviour. I did note that under 2.5.1 the 
> freeze ups were shorter and the periods of work were longer but the 
> picket fence CPU usage remains (100% for 15 seconds, 0% for 10 
> seconds, repeat)
>
> I'm wondering, does Ruby implement it's own threading system or call 
> out to the underlying OS services. This could be down to how OSX 
> schedules stuff rather than a Ruby version issue
>
> Perhaps I need to implement this in Python and see if I get the same 
> behaviour
>
>

In JRuby threads are Java threads.
They should behave as you expect out of the box.

Give it a shot if you have time. It is worth it IMO.
It will take you say 10-15 minutes to make a test, you don't need
to change the Ruby code (as far as your code is not dependent on "C gems").

JR is not silver bullet for everything, eg. it takes a while to start
so it is not ideal for shell programs you want to run by hand
and read immediately the result back.

bye
n.


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