Hi group, I've been happily using Riak in production on VMs for years. It's time to scale up so I'm running performance tests with basho_bench and my own app code on a new VM cluster.
Here's an example question I'd like to answer: will a cluster perform better with 5 VMs at 8gb each, or 10 VMs at 4gb each? The cost of the VMs is the same, and I'm guessing the performance will not be exactly the same. As I'm going through the trouble, I'll share my results. I hope this will be interesting to other people, especially with all the changes in Riak 2.0. I really like Riak so I want to make sure I give it a fair showing. Please review my config and initial results below. So far I've set up the first cluster of 5 VMs with 8gb each. I'm driving the test off a separate (6th) VM. I anticipate I'll set up the second cluster with 10 VMs at 4GB each in the next few days. Please let me know if you have any suggestions. Thanks! Daniel -- initial results: basho_bench riakc_pb for 5vm cluster, 8gb on each machine: https://www.dropbox.com/s/mpt9ame3t082lct/5vm-8gb-riakc_pb.png basho_bench counters for 5vm cluster, 8gb on each machine: https://www.dropbox.com/s/8eyp1zbpy5h16s1/5vm-8gb-counters.png riak.conf used for these tests: https://www.dropbox.com/s/krufixa2wmnaxum/base.riak.conf.txt I'm currently loading records in to the cluster through my app code. After 18h and 68M records, they're still going in at 1k records/second. The records are around 750 bytes each. They're each indexed with either 4 or 6 different 2i values. Search indexing is on as well. I'm going to use this test dataset to compare 2i vs search for my application. system stuff: VM plan through linode: 8 GB RAM 6 CPU Cores 192 GB SSD Storage 8 TB Transfer 40 Gbit Network In 1000 Mbit Network Out filesystem: /dev/xvda on / type ext4 (rw,noatime,errors=remount-ro) file limits: riak soft nofile 65536 riak hard nofile 65536 root soft nofile 65536 root hard nofile 65536
_______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
