Slow inserts

Dan Reverri dan at basho.com
Mon Apr 11 12:57:44 EDT 2011


Can you explain what you mean by "Four of the nodes were not doing anything
else"?

Does "riak-admin status" show the appropriate nodes in the ring?

Thanks,
Dan


Daniel Reverri
Developer Advocate
Basho Technologies, Inc.
dan at basho.com


On Mon, Apr 11, 2011 at 9:00 AM, Jens Rantil <jens.rantil at telavox.se> wrote:

> Hi,
>
>
>
> I have set up a 5-node test environment to give Riak a test run. I wrote a
> Python script (http://pastebin.com/geQ00Ngb) that put 53780 key-values
> into my cluster. Using round robin, 11 threads inserted these values in ~70
> seconds. This means an average of ~750 key-values/second. Is this the
> expected speed of inserts? It seems quite slow. The Mozilla benchmark (
> http://blog.mozilla.com/data/2010/08/16/benchmarking-riak-for-the-mozilla-test-pilot-project/)
> reached > 1500 ops/second for significantly bigger values than my benchmark.
>
>
>
> Additional information:
>
> * Four of the nodes were not doing anything else.
>
> * n_val=3
>
> * For every insert, w=1 and dw=0.
>
> * All nodes are using riak_0.14.1-1_amd64.deb and I have not changed any of
> the defaults settings except Erlang -cookie and -name.
>
>
>
> Thanks,
>
> Jens Rantil
>
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> riak-users at lists.basho.com
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>
>
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