[erlang-questions] Erl getting stuck in SMP with 8 cores

Eranga Udesh <>
Mon Sep 1 18:51:58 CEST 2008


Good to know that Erl works successfully wh 8 or more intel cores. Do you
use 8 schedulers with threads/hipe enabled?

I run below test:run/0 to output time every sec. But even that's getting
stuck when the Erl node is experiencing this issue.

-module(test).
-compile(export_all).

run() ->
  spawn(?MODULE, run2, [1]),
  run2(2).
run2(Id) ->
  io:fwrite("Tick [~p]: ~p~n", [Id, time()]),
  timer:sleep(1000),
  run2(Id).



On Mon, Sep 1, 2008 at 9:15 AM, Dave Smith <> wrote:

> 2008/8/31 Eranga Udesh <>:
> > Like I said earlier, the Erl node is not totall stucked. Single RPC
> commands
> > work but recursive functions getting stuck. Running processes halts and
> > "Reductions" don't increase. The Erl prompt is not responding when doing
> > "to_erl"
> > If you or anyboby run or tested Erlang with 8 or more Intel cores, pls
> let
> > me know. I want to first narrow down the problem to identify if it's a
> > problem only in my instalation or an Erl smp problem. If it's the
> > former,much releaved.
>
> FWIW, I use 8+ cores with hundreds of thousands of processes on Erlang
> SMP on a daily basis and have not seen any of the problems you've
> described. Do you have a minimal set of code that produces these
> symptoms?
>
> D.
>  _______________________________________________
> erlang-questions mailing list
> 
> http://www.erlang.org/mailman/listinfo/erlang-questions
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-questions/attachments/20080901/cbcd6545/attachment.html>


More information about the erlang-questions mailing list