How strict is this "Under no circumstances should you have more than one VM (one logical node in a Riak cluster) on the same physical hardware" rule? It doesn't fit my situation but there has to be some leniency because Riak has to work in a cloud and you are not guaranteed that your provisioned VM will be on different physical hardware than the other nodes.
From: Alexander Sicular [mailto:[email protected]] Sent: Thursday, February 21, 2013 8:27 PM To: Kevin Burton Cc: 'Sean Carey'; [email protected] Subject: Re: Tuning a Riak cluster. It can't be said enough times but the number one thing you can do to ensure that you are getting true performance (not to mention redundancy) is to use different physical hardware for each of your nodes. Under no circumstances should you have more than one VM (one logical node in a Riak cluster) on the same physical hardware. Also, use multiple connections/threads/parallelism/whatever on client side and be sure to hit all the nodes in the cluster haproxy roundrobin-esque when writing to Riak. Everything else is in the noise. -Alexander Sicular @siculars On Feb 21, 2013, at 9:04 PM, Kevin Burton <[email protected]> wrote: There each has about 20-30GB of disk space. They each are a VM so I am not sure how to specify the CPU. They all seem to be 64 bit Intel processors but I could tell you the clock speed. The network is 1Gb Ethernet. From: Sean Carey [mailto:[email protected]] Sent: Thursday, February 21, 2013 7:59 PM To: Kevin Burton Cc: [email protected] Subject: Re: Tuning a Riak cluster. Kevin, Disk and CPU, and Network? Sean Carey @densone On Thursday, February 21, 2013 at 20:31, Kevin Burton wrote: I have a cluster of 4 machines (4 Linux VM machines each allocated about 1 Gb of memory - yea I know it isn't a lot). I would like to get some pointers on getting the fastest query time possible given these meager resources. Thank you. _______________________________________________ riak-users mailing list <mailto:[email protected]> [email protected] <http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com> 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
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