[erlang-questions] ets vs process-based registry + local vs global dispatch

Dave Smith <>
Wed Jul 8 20:00:15 CEST 2009


You might want to look at Ulf Wiger's "proc" app -- I think it's
already solved this problem (at least within the scope of a single
node).

My github clone of it is here: http://github.com/dizzyd/proc/tree/master

Originally found in: http://jungerl.sourceforge.net/

Somewhere, I think Ulf has a SVN repo as well -- but can't remember where.

D.

On Wed, Jul 8, 2009 at 11:53 AM, Joel Reymont<> wrote:
> Are there any performance numbers on using ETS to keep track of processes vs
> using a process-based registry? What about local vs global gen_server casts?
>
> I'm keeping track of processes associated with session tokens. I can
> globally register a process with a name that includes any term. I can only
> use an atom when registering a process locally.
>
> I suspect that sending messages to globally registered processes ({global,
> {client_proxy, Token}}) is slowing me down quite a bit. I'm thinking of
> keeping processes in a token->pid map but I'd like to know if ETS is
> generally recommended over a process wrapping a dict or gb_tree map.
>
> I'm going to run tests and get some hard numbers. I'm wondering if there's
> an existing body of knowledge on this, though.
>
>        Thanks, Joel
>
> ---
> Mac hacker with a performance bent
> http://www.linkedin.com/in/joelreymont
>
>
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