Thanks for the quick answers Jared & Kelly,

+zdbbl 16384 is working ok for our production cluster (5 nodes), but for development for some large 2i (a list of keys of 4m+) I get some time-outs so I asked the question, cause there are memory implications, I will try 32768 at our dev cluster (4 nodes) and leave production alone until needed.

Regards,

Guido.

On 15/07/13 15:58, Jared Morrow wrote:
Guido,

So higher +zdbbl numbers will allow for larger message buffers, but at the expense of memory usage. We've actually added better wording in the default vm.args file for 1.4+ https://github.com/basho/riak/blob/master/rel/files/vm.args#L40

So I guess the best answer is trial & error. We added 32MB commented out in the vm.args, but it can go much higher than that (around 2gb is the true max). I think most people have found setting it to 32768 helps without too much memory usage penalty.

-Jared




On Mon, Jul 15, 2013 at 8:38 AM, Guido Medina <[email protected] <mailto:[email protected]>> wrote:

    Hi,

    We had an issue in 1.4 where 2i operations were timing out, after
    going through support we were suggested to use "+zdbbl 16384", on
    the "Configuring Riak Docs" it is strongly suggested (unless doc
    need to be re-phrased) it should be higher:

    *Source:*
    
http://docs.basho.com/riakcs/latest/cookbooks/configuration/Configuring-Riak/

    At the end of such doc there is the following fragment and we
    would like to know if there is a kind of all situations balanced
    value and the implications:


          Performance & Capacity settings

    It is strongly recommended that the following values be set in the
    Riak |vm.args| configuration file, which is located in the
    |/etc/riak| or |/opt/riak/etc| folder.

    ## This setting is not present in default Riak installations, so
    ## it should be added.  In some cases, a value of 128000 may be
    ## appropriate.
    +zdbbl96000

    ## This setting is present in default Riak installations, so
    ## its value should be edited.
    -env ERL_MAX_PORTS16384



    Kind regards,

    Guido.

    _______________________________________________
    riak-users mailing list
    [email protected] <mailto:[email protected]>
    http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com



_______________________________________________
riak-users mailing list
[email protected]
http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com

Reply via email to