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From Dave Cottlehuber <d...@muse.net.nz>
Subject Re: CouchDB 1.1 issue
Date Thu, 01 Sep 2011 20:19:57 GMT
On 2 September 2011 04:38, kowsik <kowsik@gmail.com> wrote:
> Some follow up questions that I'm hoping the dev's can answer. I don't
> grok Erlang so if these are dumb questions, humor me.
>
> The couchdb script launches erlang with the following parameters:
>
> -Bd - disable breaks
> -K true - what's this for?
> -A 4 - number of async threads - does concurrency improve if this is increased?
>
> There also seems to be a number of options to set the stack size, heap
> size, etc. Anyone played around with these settings to get additional
> concurrency/performance boosts?
>
> Thanks,
>
> K.

Hi Kowsik

IIRC janl@ fiddled with these parameters a while back. K is for kernel
polling; more info www.erlang.org/doc/man/erl.html

If you want to poke more inside Erlang, bigwig
http://www.metabrew.com/article/bigwig-erlang-webtool-spawnfest
https://github.com/beamspirit/bigwig is new & nice.

A+
Dave

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