On Wed, Sep 21, 2011 at 10:26 AM, Elias Levy
<fearsome.lucid...@gmail.com> wrote:

> Any idea what kind of performance hit one takes by lowering the number of
> open file handles?

I just submitted a pull request to lower the default to 10; should
show up in next RC. As for performance, in the tests I've run I've not
observed any significant performance impact; I'm sure there _is_ one,
it's just not obvious (yet). :)

> We are using a ring size of 128.  In a worse case scenario all those 128
> vnodes would exist on a single node, so we need 128*max_open_files fd limit
> per node.
> What about replicas?  Do they have their own vnode?  Or does a ring with a
> size of 128 can only have at most 128 vnodes regardless of replicas or
> fallbacks?

Replicas ~= vnode, so you should have at most 128 KV vnode in a given ring.

D.

-- 
Dave Smith
Director, Engineering
Basho Technologies, Inc.
diz...@basho.com

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