Pat, Does your test use retries when it gets "not found" responses? You might not encounter that small % of missing keys if you retry at least once when they are missing. Because of the eventually consistent design of Riak, writes you make might not be readable immediately.
On Fri, Sep 14, 2012 at 10:17 AM, Pat Lynch <[email protected]> wrote: > Hi all, > I was just wondering if you could give me some feedback on my usage of RIAK. > I'm currently testing a number of datastores and am trying to come up with > pros/ cons of each. > > I have a variety of tests (write speed 1 client, write speed 10 clients, > read speed 1 client, read speed 10 clients, read while writing, write while > reading etc). The data set is tiny for this phase (10k, 50k, 100k). > > I have 3 machines in the cluster (each with 12GB RAM, quadcore CPUs, 500GB > drives), each cache setup to use 128MB memory (eleveldb). Each key is 64 > bytes. and each value is 512 bytes. > > > The write speed I'm getting is around 260.0440791 per second (using 1 > client), scaling to 2281.1662 writes per second (using 10 clients). > The read speed I'm getting is around 397.2291042 per second (using 1 > client), scaling to 3316.089445 reads per second (using 10 clients). > > One very worrying thing I noticed is that I sometimes miss keys? i.e. I > write 100k keys to disk, then read them all back in and check the value > matches expected. This would only happen for 1 or 2 keys out of 100k, but > (1 or 2 keys is enough…) > > This is using the latest version of RIAK with the python client (python > client is running on a 4th machine). > > Any help would be greatly appreciated. > > thanks, > Pat. > > _______________________________________________ > riak-users mailing list > [email protected] > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > -- Sean Cribbs <[email protected]> Software Engineer Basho Technologies, Inc. http://basho.com/ _______________________________________________ riak-users mailing list [email protected] http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
